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安友康二

徳島大学

プロフィール
教育活動
研究活動
社会活動
リサーチマップ・
Jグローバル
KAKEN
注目研究

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2024年4月26日更新

職名: 教授
電話: 研究者総覧に該当データはありませんでした。
電子メール: yasutomo@tokushima-u.ac.jp
学歴: 1990/3: 徳島大学医学部医学科卒業
1993/4: 徳島大学大学院医学研究科入学
1997/3: 徳島大学大学院医学研究科修了(医博修了)
学位: 博士(医学) (徳島大学) (1997年3月)
職歴・経歴: 1990/5: 徳島大学医学部附属病院・医員 (小児科学講座)
1991/6: 高松赤十字病院・小児科医師
1992/6: 国立四国がんセンター・小児科医師
1996/4: 日本学術振興会特別研究員(DC2)
1997/4: 日本学術振興会海外特別研究員
1997/4: Visiting Scientist: Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health (USA)
2000/4: 徳島大学医学部附属病院・医員(小児科学講座)
2001/2: 徳島大学医学部・助手(小児科学講座)
2001/7: 徳島大学医学部・教授 (寄生虫学講座)
2002/4: 徳島大学医学部・教授(生体防御医学分野)(医学部改組による)
2004/4: 徳島大学大学院・教授(生体防御医学分野)(大学院改組による)
2013/4: 徳島大学医学部・医学科長(併任 2017年3月31日まで)
2017/4: 徳島大学副理事(研究体制担当)(併任)
2019/3: 徳島大学ポストLEDフォトニクス研究所・副所長，医光融合研究部門長(併任)

専門分野・研究分野: 免疫学 (Immunology)
小児科学 (Pediatrics)
膠原病学 (Rheumatology)

研究者総覧で最新データを確認する

2024年4月26日更新

専門分野・研究分野: 免疫学 (Immunology)
小児科学 (Pediatrics)
膠原病学 (Rheumatology)
担当経験のある授業科目: 先端医学 (学部)
免疫学・寄生虫学 (学部)
免疫学・寄生虫学実習 (学部)
医学概論 (共通教育)
基礎医学 (学部)
寄生虫学・免疫学/寄生虫学実習・免疫学実習 (学部)
微生物・免疫学実習 (大学院)
微生物学実験実習・臨床研究実習 (大学院)
技術英語入門 (学部)
生体防御医学 (大学院)
生体防御医学演習 (大学院)
研究室配属 (学部)
細菌学 (学部)
細菌学・細菌学実習 (学部)
細菌学実習 (学部)
指導経験: 1人 (修士), 1人 (博士)

研究者総覧で最新データを確認する

2024年4月26日更新

専門分野・研究分野: 免疫学 (Immunology)
小児科学 (Pediatrics)
膠原病学 (Rheumatology)

研究テーマ: Tリンパ球生物学
免疫・炎症性疾患の遺伝学 (Tリンパ球は獲得免疫系を制御する中心的役割を担う細胞集団である．一方で
Tリンパ球の機能異常は感染症の増悪あるいは自己免疫疾患を惹起する．つまり
Tリンパ球分化あるいは活性化の分子基盤を発見することは
免疫難病の治療法の開発に結びつく．最近は
特にNotchシグナルによる Tリンパ球応答の分子基盤を解明することに焦点を絞った研究を行っている．また
自己免疫疾患は遺伝学的要因によって惹起されることが知られているが
大部分の自己免疫疾患の原因遺伝子は同定されていない．現在は特に
血族家系を用いたホモ接合体マッピングにより
新規の自己免疫疾患の原因遺伝子の同定を目指した研究を行っている．)

著書

Koji Yasutomo :
Notch Signaling,
Springer, Aug. 2017.

論文

Thiranut Jaroonwitchawan, Hideki Arimochi, Yuki Sasaki, Chieko Ishifune, Hiroyuki Kondo, Kunihiro Otsuka, Shin-ichi Tsukumo and Koji Yasutomo :
Stimulation of the farnesoid X receptor promotes M2 macrophage polarization.,
Frontiers in Immunology, Vol.14, 2023.

(要約): This skewed polarization towards M2 macrophages by an FXR agonist was accompanied by increased expression of signaling molecules related to the retinoic acid receptor. Inhibition of the retinoic acid receptor suppressed FXR agonist-mediated M2 macrophage polarization, indicating that this polarization was, at least, partly dependent on the retinoic acid receptor pathway. These data demonstrate that FXR has a role in polarization toward M2 macrophages and suggest a possible therapeutic potential of FXR agonists in M2 macrophage-related conditions.
(キーワード): Receptors, Cytoplasmic and Nuclear
(徳島大学機関リポジトリ): ● Metadata: 118291
(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fimmu.2023.1065790
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36776885; ● Search Scopus @ Elsevier (PMID): 36776885; ● Search Scopus @ Elsevier (DOI): 10.3389/fimmu.2023.1065790

(徳島大学機関リポジトリ: 118291, DOI: 10.3389/fimmu.2023.1065790, PubMed: 36776885) Taira Kajisa, Taka-aki Yano, Hidenori Koresawa, Kunihiro Otsuka, Ayuko Sakane, Takuya Sasaki, Koji Yasutomo and Takeshi Yasui :
Highly sensitive detection of nucleocapsid protein from SARS-CoV-2 using a near-infrared surface plasmon resonance sensing system,
Optics Continuum, Vol.11, No.1, 2336-2346, 2022.

(出版サイトへのリンク): ● Publication site (DOI): 10.1364/OPTCON.472486
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1364/OPTCON.472486

(DOI: 10.1364/OPTCON.472486) Yuta Suzuki, Takayuki Miyazaki, Hiroki Muto, Kenji Kubara, Yohei Mukai, Ryuji Watari, Shinya Sato, Keita Kondo, Shin-ichi Tsukumo, Koji Yasutomo, Masashi Ito and Kappei Tsukahara :
Design and lyophilization of lipid nanoparticles for mRNA vaccine and its robust immune response in mice and nonhuman primates.,
Molecular Therapy. Nucleic Acids, Vol.30, 226-240, 2022.

(要約): and identified lead lipid nanoparticles with a branched-tail lipid structure. Buffer optimization allowed the determination of lyophilization conditions, where lipid nanoparticle-encapsulated mRNA encoding SARS-CoV-2 spike protein could induce robust immunogenicity in mice after 1 month of storage at 5°C and 25°C. Intramuscularly injected lipid nanoparticles distributed in conventional dendritic cells in mouse lymph nodes induced balanced T helper (Th) 1/Th2 responses against SARS-CoV-2 spike protein. In nonhuman primates, two doses of 10 or 100 μg of mRNA induced higher spike-specific binding geometric mean titers than those from a panel of SARS-CoV-2-convalescent human sera. Immunized sera broadly inhibited the viral entry receptor angiotensin-converting enzyme 2 (ACE2) from binding to the spike protein in all six strains tested, including variants of concern. These results could provide useful information for designing next-generation mRNA vaccines.
(徳島大学機関リポジトリ): ● Metadata: 117846
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.omtn.2022.09.017
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36187052; ● Search Scopus @ Elsevier (PMID): 36187052; ● Search Scopus @ Elsevier (DOI): 10.1016/j.omtn.2022.09.017

(徳島大学機関リポジトリ: 117846, DOI: 10.1016/j.omtn.2022.09.017, PubMed: 36187052) Takaaki Koma, Naoya Doi, Akihiro Suzuki, Kentaro Nagamatsu, Takeshi Yasui, Koji Yasutomo, Akio Adachi, Takeo Minamikawa and Masako Nomaguchi :
Major target for UV-induced complete loss of HIV-1 infectivity: A model study of single-stranded RNA enveloped viruses,
Frontiers in Virology, Vol.2, 994842, 2022.

(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fviro.2022.994842
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3389/fviro.2022.994842

(DOI: 10.3389/fviro.2022.994842) Shin-ichi Tsukumo, Ganesh Poorani Subramani, Noé Seija, Mizuho Tabata, Yoichi Maekawa, Yuya Mori, Chieko Ishifune, Yasushi Itoh, Mineto Ota, Keishi Fujio, M Noia Javier Di and Koji Yasutomo :
AFF3, a susceptibility factor for autoimmune diseases, is a molecular facilitator of immunoglobulin class switch recombination.,
Science Advances, Vol.8, No.34, 2022.

(要約): in human B cells. These findings demonstrate that AFF3 directly regulates CSR by facilitating the recruitment of AID to the switch regions.
(徳島大学機関リポジトリ): ● Metadata: 117850
(出版サイトへのリンク): ● Publication site (DOI): 10.1126/sciadv.abq0008
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36001653; ● Search Scopus @ Elsevier (PMID): 36001653; ● Search Scopus @ Elsevier (DOI): 10.1126/sciadv.abq0008

(徳島大学機関リポジトリ: 117850, DOI: 10.1126/sciadv.abq0008, PubMed: 36001653) Hiroyuki Kondo, Takahiro Kageyama, Shigeru Tanaka, Kunihiro Otsuka, Shin-ichi Tsukumo, Yoichi Mashimo, Yoshihiro Onouchi, Hiroshi Nakajima and Koji Yasutomo :
Markers of Memory CD8 T Cells Depicting the Effect of the BNT162b2 mRNA COVID-19 Vaccine in Japan.,
Frontiers in Immunology, Vol.13, 2022.

(要約): BNT162b2, a nucleoside-modified mRNA vaccine for SARS-CoV-2 spike glycoprotein (S), provides approximately 95% efficacy for preventing COVID-19. However, it remains unclear how effectively memory CD8+ T cells are generated and which genetic and environmental factors affect the generation and function of memory CD8+ T cells elicited by this vaccine. Here, we investigated the frequency and functions of memory CD8+ T cells 3 weeks after the second vaccination in the Japanese population. Using a peptide-MHC pentamer, we detected an increased number of memory CD8+ T cells together with increased serum anti-S protein antibody in females compared with that in males, but the frequency of pentamer-positive cells was not positively correlated with antibody titers. Memory precursor effector cells (KLRG1-CD127+) among both CD8+ cells and pentamer+ cells and effector cells (CD38-HLA-DR+) among pentamer+ cells were more abundant in females than in males. Upon S protein-mediated stimulation of T cells, the intensity of CD107a and granzyme B expression was increased in females compared with that in males, indicating stronger memory CD8+ T cell responses in females than in males. Our studies showed that the BNT162b2 vaccine elicits increased memory CD8+ T cell proliferation and secondary CTL responses in females compared with those in males in the Japanese population. These findings provide an important basis for the distinct sex difference in cellular immune responses to mRNA vaccination and suggest that memory precursor effector cells can be one of markers to evaluate and boost cellular immunity induced by BNT162b2.
(徳島大学機関リポジトリ): ● Metadata: 117815
(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fimmu.2022.836923
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35572546; ● Search Scopus @ Elsevier (PMID): 35572546; ● Search Scopus @ Elsevier (DOI): 10.3389/fimmu.2022.836923

(徳島大学機関リポジトリ: 117815, DOI: 10.3389/fimmu.2022.836923, PubMed: 35572546) Yuki Sasaki, Hideki Arimochi, Kunihiro Otsuka, Hiroyuki Kondo, Shin-ichi Tsukumo and Koji Yasutomo :
Blockade of the CXCR3/CXCL10 axis ameliorates inflammation caused by immunoproteasome dysfunction.,
JCI Insight, Vol.7, No.7, 2022.

(要約): Immunoproteasomes regulate the degradation of ubiquitin-coupled proteins and generate peptides that are preferentially presented by MHC class I. Mutations in immunoproteasome subunits lead to immunoproteasome dysfunction, which causes proteasome-associated autoinflammatory syndromes (PRAAS) characterized by nodular erythema and partial lipodystrophy. It remains unclear, however, how immunoproteasome dysfunction leads to inflammatory symptoms. Here, we established mice harboring a mutation in Psmb8 (Psmb8-KI mice) and addressed this question. Psmb8-KI mice showed higher susceptibility to imiquimod-induced skin inflammation (IMS). Blockade of IL-6 or TNF-α partially suppressed IMS in both control and Psmb8-KI mice, but there was still more residual inflammation in the Psmb8-KI mice than in the control mice. DNA microarray analysis showed that treatment of J774 cells with proteasome inhibitors increased the expression of the Cxcl9 and Cxcl10 genes. Deficiency in Cxcr3, the gene encoding the receptor of CXCL9 and CXCL10, in control mice did not change IMS susceptibility, while deficiency in Cxcr3 in Psmb8-KI mice ameliorated IMS. Taken together, these findings demonstrate that this mutation in Psmb8 leads to hyperactivation of the CXCR3 pathway, which is responsible for the increased susceptibility of Psmb8-KI mice to IMS. These data suggest the CXCR3/CXCL10 axis as a new molecular target for treating PRAAS.
(徳島大学機関リポジトリ): ● Metadata: 117226
(出版サイトへのリンク): ● Publication site (DOI): 10.1172/jci.insight.152681
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35393946; ● Search Scopus @ Elsevier (PMID): 35393946; ● Search Scopus @ Elsevier (DOI): 10.1172/jci.insight.152681

(徳島大学機関リポジトリ: 117226, DOI: 10.1172/jci.insight.152681, PubMed: 35393946) Taka-aki Yano, Taira Kajisa, Masayuki Ono, Yoshiya Miyasaka, Yuichi Hasegawa, Atsushi Saito, Kunihiro Otsuka, Ayuko Sakane, Takuya Sasaki, Koji Yasutomo, Rina Hamajima, Yuta Kanai, Takeshi Kobayashi, Yoshiharu Matsuura, Makoto Itonaga and Takeshi Yasui :
Ultrasensitive detection of SARS-CoV-2 nucleocapsid protein using large gold nanoparticle-enhanced surface plasmon resonance.,
Scientific Reports, Vol.12, No.1, 1060, 2022.

(要約): The COVID-19 pandemic has created urgent demand for rapid detection of the SARS-CoV-2 coronavirus. Herein, we report highly sensitive detection of SARS-CoV-2 nucleocapsid protein (N protein) using nanoparticle-enhanced surface plasmon resonance (SPR) techniques. A crucial plasmonic role in significantly enhancing the limit of detection (LOD) is revealed for exceptionally large gold nanoparticles (AuNPs) with diameters of hundreds of nm. SPR enhanced by these large nanoparticles lowered the LOD of SARS-CoV-2 N protein to 85 fM, resulting in the highest SPR detection sensitivity ever obtained for SARS-CoV-2 N protein.
(キーワード): Coronavirus Nucleocapsid Proteins / Gold / Metal Nanoparticles / Phosphoproteins / SARS-CoV-2 / Surface Plasmon Resonance
(徳島大学機関リポジトリ): ● Metadata: 117264
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-022-05036-x
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35058513; ● Search Scopus @ Elsevier (PMID): 35058513; ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-022-05036-x

(徳島大学機関リポジトリ: 117264, DOI: 10.1038/s41598-022-05036-x, PubMed: 35058513) Koji Yasutomo :
Genetics and animal models of familial pulmonary fibrosis.,
International Immunology, Vol.33, No.12, 653-657, 2021.

(要約): Pulmonary fibrosis is caused by the interplay between genetic and environmental factors. Recent studies have revealed various genes associated with idiopathic pulmonary fibrosis, as well as the causative genes for familial pulmonary fibrosis. Although increased death or dysfunction of type 2 alveolar epithelial (AT2) cells has been detected in lung specimens from pulmonary fibrosis patients, it remains unclear whether and how AT2 cell death or dysfunction is responsible for the progression of pulmonary fibrosis. A recent study showed that increased AT2 cell necroptosis is the initial event in pulmonary fibrosis by analyzing patients with familial pulmonary fibrosis and an animal model that harbors the same mutation as patients. The contribution of AT2 cell necroptosis to the pathogenesis of pulmonary fibrosis has not been identified in animal model studies, which validates the effectiveness of genetic analysis of familial diseases to uncover unknown pathogeneses. Thus, further extensive genetic studies of pulmonary fibrosis along with functional studies based on genetic analysis will be crucial not only in elucidating the precise disease process but also, ultimately, in identifying novel treatment strategies for both familial and non-familial pulmonary fibrosis.
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/intimm/dxab026
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34049386; ● Search Scopus @ Elsevier (PMID): 34049386; ● Search Scopus @ Elsevier (DOI): 10.1093/intimm/dxab026

(DOI: 10.1093/intimm/dxab026, PubMed: 34049386) Michittra Boonchan, Hideki Arimochi, Kunihiro Otsuka, Tomoko Kobayashi, Hisanori Uehara, Thiranut Jaroonwitchawan, Yuki Sasaki, Shin-ichi Tsukumo and Koji Yasutomo :
Necroptosis protects against exacerbation of acute pancreatitis.,
Cell Death & Disease, Vol.12, No.6, 601, 2021.

(要約): mice exhibit weight loss, edematous pancreatitis, necrotizing pancreatitis, and acinar cell dedifferentiation in response to tissue damage. Genetic deletion of Mlkl resulted in downregulation of the antiapoptotic genes Bclxl and Cflar in association with increases in the numbers of apoptotic cells, as detected by TUNEL assay. These findings suggest that RIPK3 and MLKL-mediated necroptosis exerts protective effects in AP and caution against the use of necroptosis inhibitors for AP treatment.
(徳島大学機関リポジトリ): ● Metadata: 116381
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41419-021-03847-w
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34112763; ● Search Scopus @ Elsevier (PMID): 34112763; ● Search Scopus @ Elsevier (DOI): 10.1038/s41419-021-03847-w

(徳島大学機関リポジトリ: 116381, DOI: 10.1038/s41419-021-03847-w, PubMed: 34112763) Takeo Minamikawa, Takaaki Koma, Akihiro Suzuki, Takahiko Mizuno, Kentaro Nagamatsu, Hideki Arimochi, Koichiro Tsuchiya, Kaoru Matsuoka, Takeshi Yasui, Koji Yasutomo and Masako Nomaguchi :
Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode.,
Scientific Reports, Vol.11, 5070, 2021.

(要約): for 300 nm are required to inactivate 99.9% of SARS-CoV-2. Our results provide quantitative antiviral effects of DUV irradiation on SARS-CoV-2, serving as basic knowledge of inactivation technologies against SARS-CoV-2.
(徳島大学機関リポジトリ): ● Metadata: 117265
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-021-84592-0
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33658595; ● Search Scopus @ Elsevier (PMID): 33658595; ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-021-84592-0

(徳島大学機関リポジトリ: 117265, DOI: 10.1038/s41598-021-84592-0, PubMed: 33658595) Yuki Sasaki, Kunihiro Otsuka, Hideki Arimochi, Shin-ichi Tsukumo and Koji Yasutomo :
Distinct Roles of IL-1 and IL-18 in NLRC4-Induced Autoinflammation.,
Frontiers in Immunology, Vol.11, 591713, 2020.

(要約): The NLRC4 inflammasome assembles in response to detection of bacterial invasion, and NLRC4 activation leads to the production of IL-1 and IL-18 together with pyroptosis-mediated cell death. Missense activating mutations in cause autoinflammatory disorders whose symptoms are distinctly dependent on the site of mutation and other aspects of the genetic background. To determine the involvement of IL-1 and IL-18 in the inflammation induced by mutation, we depleted IL-1 , IL-18, or both cytokines in Nlrc4-transgenic mice in which mutant is expressed under the MHC class II promoter (Nlrc4-H443P-Tg mice). The deletion of the or gene in Nlrc4-H443P-Tg mice reduced the neutrophil numbers in the spleen, and mice with deletion of both genes had an equivalent number of neutrophils compared to wild-type mice. Deletion of ameliorated but did not eliminate bone marrow hyperplasia, while mice deficient in showed no bone marrow hyperplasia. In contrast, tail bone deformity remained in the presence of deficiency, but deficiency completely abolished bone deformity. The decreased bone density in Nlrc4-H443P-Tg mice was counteracted by but not deficiency. Our results demonstrate the distinct effects of IL-1 and IL-18 on NLRC4-induced inflammation among tissues, which suggests that blockers for each cytokine should be utilized depending on the site of inflammation.
(徳島大学機関リポジトリ): ● Metadata: 116191
(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fimmu.2020.591713
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33178225; ● Summary page in Scopus @ Elsevier: 2-s2.0-85094604314

(徳島大学機関リポジトリ: 116191, DOI: 10.3389/fimmu.2020.591713, PubMed: 33178225, Elsevier: Scopus) Akio Takezaki, Shin-ichi Tsukumo, Yasuhiro Setoguchi, G Julie Ledford, Hisatsugu Goto, Kazuyoshi Hosomichi, Hisanori Uehara, Yasuhiko Nishioka and Koji Yasutomo :
A homozygous SFTPA1 mutation drives necroptosis of type II alveolar epithelial cells in patients with idiopathic pulmonary fibrosis.,
The Journal of Experimental Medicine, Vol.216, No.12, 2724-2735, 2019.

(要約): promotes necroptosis of AEII cells through JNK-mediated up-regulation of Ripk3, highlighting the necroptosis pathway as a therapeutic target for IPF.
(徳島大学機関リポジトリ): ● Metadata: 114694
(出版サイトへのリンク): ● Publication site (DOI): 10.1084/jem.20182351
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31601679; ● Search Scopus @ Elsevier (PMID): 31601679; ● Search Scopus @ Elsevier (DOI): 10.1084/jem.20182351

(徳島大学機関リポジトリ: 114694, DOI: 10.1084/jem.20182351, PubMed: 31601679) Koji Yasutomo :
Dysregulation of immunoproteasomes in autoinflammatory syndromes.,
International Immunology, Vol.31, No.10, 631-637, 2019.

(要約): Immunoproteasomes degrade ubiquitin-coupled proteins and play a role in creating peptides for presentation by MHC class I proteins. Studies of gene-deficient mice, in which each immunoproteasomal subunit was affected, have demonstrated that dysfunction of immunoproteasomes leads to immunodeficiency, i.e. reduced expression of MHC class I and attenuation of CD8 T-cell responses. Recent studies, however, have uncovered a new type of autoinflammatory syndrome characterized by fever, nodular erythema and progressive partial lipodystrophy that is caused by genetic mutations in immunoproteasome subunits. These mutations disturbed the assembly of immunoproteasomes, which led to reduced proteasomal activity and thus accumulation of ubiquitin-coupled proteins. Those findings suggest that immunoproteasomes function as anti-inflammatory machinery in humans. The discovery of a new type of autoinflammatory syndrome caused by dysregulated immunoproteasomes provides novel insights into the important roles of immunoproteasomes in inflammation as well as the spectrum of autoinflammatory diseases.
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/intimm/dxy059
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30169676; ● Search Scopus @ Elsevier (PMID): 30169676; ● Search Scopus @ Elsevier (DOI): 10.1093/intimm/dxy059

(DOI: 10.1093/intimm/dxy059, PubMed: 30169676) Daichi Ishikawa, Chie Takasu, Hideya Kashihara, Masaaki Nishi, Takuya Tokunaga, Jun Higashijima, Kouzou Yoshikawa, Koji Yasutomo and Mitsuo Shimada :
The Significance of MicroRNA-449a and Its Potential Target HDAC1 in Patients With Colorectal Cancer.,
Anticancer Research, Vol.39, No.6, 2855-2860, 2019.

(要約): miR-449a level might be a prognostic indicator for colorectal cancer and miR-449a might regulate HDAC1 expression.
(キーワード): Aged / Antigens, Tumor-Associated, Carbohydrate / Colorectal Neoplasms / Female / Gene Expression Regulation, Neoplastic / Histone Deacetylase 1 / Humans / Liver Neoplasms / Male / MicroRNAs / Middle Aged / Neoplasm Invasiveness / Prognosis / Survival Analysis
(出版サイトへのリンク): ● Publication site (DOI): 10.21873/anticanres.13414
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31177123; ● Search Scopus @ Elsevier (PMID): 31177123; ● Search Scopus @ Elsevier (DOI): 10.21873/anticanres.13414

(DOI: 10.21873/anticanres.13414, PubMed: 31177123) Chieko Ishifune, Shin-ichi Tsukumo, Yoichi Maekawa, Katsuto Hozumi, Hyun Doo Chung, Chihiro Motozono, Sho Yamasaki, Hiroyasu Nakano and Koji Yasutomo :
Regulation of membrane phospholipid asymmetry by Notch-mediated flippase expression controls the number of intraepithelial TCRαβ+CD8αα+ T cells.,
PLoS Biology, Vol.17, No.5, 2019.

(要約): Intestinal intraepithelial lymphocytes (IELs) expressing CD8αα on αβ T cells (TCRαβ+CD8αα+ IELs) have suppressive capabilities in enterocolitis, but the mechanism that maintains homeostasis and cell number is not fully understood. Here, we demonstrated that the number of TCRαβ+CD8αα+ IELs was severely reduced in mice lacking recombination signal binding protein for immunoglobulin kappa J region (Rbpj) or Notch1 and Notch2 in T cells. Rbpj-deficient TCRαβ+CD8αα+ IELs expressed low levels of Atp8a2, which encodes a protein with flippase activity that regulates phospholipid asymmetry of plasma membrane such as flipping phosphatidylserine in the inner leaflet of plasma membrane. Rbpj-deficient TCRαβ+CD8αα+ IELs cannot maintain phosphatidylserine in the inner leaflet of the plasma membrane. Furthermore, depletion of intestinal macrophages restored TCRαβ+CD8αα+ IELs in Rbpj-deficient mice, suggesting that exposure of phosphatidylserine on the plasma membrane in Rbpj-deficient TCRαβ+CD8αα+ IELs acts as an "eat-me" signal. Together, these results revealed that Notch-Atp8a2 is a fundamental regulator for IELs and highlighted that membrane phospholipid asymmetry controlled by Notch-mediated flippase expression is a critical determinant in setting or balancing the number of TCRαβ+CD8αα+ IELs.
(徳島大学機関リポジトリ): ● Metadata: 114327
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pbio.3000262
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31071093; ● Search Scopus @ Elsevier (PMID): 31071093; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pbio.3000262

(徳島大学機関リポジトリ: 114327, DOI: 10.1371/journal.pbio.3000262, PubMed: 31071093) Shin-ichi Tsukumo and Koji Yasutomo :
T Cells and Antitumor Immunity by Notch Signaling.,
Frontiers in Immunology, Vol.9, 2018.

(要約): T cells and discuss issues and implications for its use in antitumor immunity.
(徳島大学機関リポジトリ): ● Metadata: 114462
(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fimmu.2018.00101
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29441071; ● Search Scopus @ Elsevier (PMID): 29441071; ● Search Scopus @ Elsevier (DOI): 10.3389/fimmu.2018.00101

(徳島大学機関リポジトリ: 114462, DOI: 10.3389/fimmu.2018.00101, PubMed: 29441071) Kayo Ikeda, Makoto Kinoshita, Hisako Kayama, Shushi Nagamori, Pornparn Kongpracha, Eiji Umemoto, Ryu Okumura, Takashi Kurakawa, Mari Murakami, Norihisa Mikami, Yasunori Shintani, Satoko Ueno, Ayatoshi Andou, Morihiro Ito, Hideki Tsumura, Koji Yasutomo, Keiichi Ozono, Seiji Takashima, Shimon Sakaguchi, Yoshikatsu Kanai and Kiyoshi Takeda :
Slc3a2 Mediates Branched-Chain Amino-Acid-Dependent Maintenance of Regulatory T Cells.,
Cell Reports, Vol.21, No.7, 1824-1838, 2017.

(要約): Foxp3(+) regulatory T (Treg) cells, which suppress immune responses, are highly proliferative in vivo. However, it remains unclear how the active replication of Treg cells is maintained in vivo. Here, we show that branched-chain amino acids (BCAAs), including isoleucine, are required for maintenance of the proliferative state of Treg cells via the amino acid transporter Slc3a2-dependent metabolic reprogramming. Mice fed BCAA-reduced diets showed decreased numbers of Foxp3(+) Treg cells with defective in vivo proliferative capacity. Mice lacking Slc3a2 specifically in Foxp3(+) Treg cells showed impaired in vivo replication and decreased numbers of Treg cells. Slc3a2-deficient Treg cells showed impaired isoleucine-induced activation of the mTORC1 pathway and an altered metabolic state. Slc3a2 mutant mice did not show an isoleucine-induced increase of Treg cells in vivo and exhibited multi-organ inflammation. Taken together, these findings demonstrate that BCAA controls Treg cell maintenance via Slc3a2-dependent metabolic regulation.
(徳島大学機関リポジトリ): ● Metadata: 115052
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.celrep.2017.10.082
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29141216; ● Search Scopus @ Elsevier (PMID): 29141216; ● Search Scopus @ Elsevier (DOI): 10.1016/j.celrep.2017.10.082

(徳島大学機関リポジトリ: 115052, DOI: 10.1016/j.celrep.2017.10.082, PubMed: 29141216) Yasuyuki Saito, Datu Respatika, Satomi Komori, Ken Washio, Taichi Nishimura, Takenori Kotani, Yoji Murata, Hideki Okazawa, Hiroshi Ohnishi, Yoriaki Kaneko, Katsuyuki Yui, Koji Yasutomo, Chikako Nishigori, Yoshihisa Nojima and Takashi Matozaki :
SIRP(+) dendritic cells regulate homeostasis of fibroblastic reticular cells via TNF receptor ligands in the adult spleen.,
Proceedings of the National Academy of Sciences of the United States of America, Vol.114, No.47, E10151-E10160, 2017.

(要約): In secondary lymphoid organs, development and homeostasis of stromal cells such as podoplanin (Pdpn)-positive fibroblastic reticular cells (FRCs) are regulated by hematopoietic cells, but the cellular and molecular mechanisms of such regulation have remained unclear. Here we show that ablation of either signal regulatory protein (SIRP), an Ig superfamily protein, or its ligand CD47 in conventional dendritic cells (cDCs) markedly reduced the number of CD4(+) cDCs as well as that of Pdpn(+) FRCs and T cells in the adult mouse spleen. Such ablation also impaired the survival of FRCs as well as the production by CD4(+) cDCs of tumor necrosis factor receptor (TNFR) ligands, including TNF-, which was shown to promote the proliferation and survival of Pdpn(+) FRCs. CD4(+) cDCs thus regulate the steady-state homeostasis of FRCs in the adult spleen via the production of TNFR ligands, with the CD47-SIRP interaction in cDCs likely being indispensable for such regulation.
(出版サイトへのリンク): ● Publication site (DOI): 10.1073/pnas.1711345114
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29109283; ● Search Scopus @ Elsevier (PMID): 29109283; ● Search Scopus @ Elsevier (DOI): 10.1073/pnas.1711345114

(DOI: 10.1073/pnas.1711345114, PubMed: 29109283) Masanori Niki, Kohhei Nakajima, Daichi Ishikawa, Jun Nishida, Chieko Ishifune, Shin-ichi Tsukumo, Mitsuo Shimada, Shinji Nagahiro, Yoshinori Mitamura and Koji Yasutomo :
MicroRNA-449a deficiency promotes colon carcinogenesis.,
Scientific Reports, Vol.7, No.1, 10696, 2017.

(要約): MicroRNAs have broad roles in tumorigenesis and cell differentiation through regulation of target genes. Notch signaling also controls cell differentiation and tumorigenesis. However, the mechanisms through which Notch mediates microRNA expression are still unclear. In this study, we aimed to identify microRNAs regulated by Notch signaling. Our analysis found that microRNA-449a (miR-449a) was indirectly regulated by Notch signaling. Although miR-449a-deficient mice did not show any Notch-dependent defects in immune cell development, treatment of miR-449a-deficient mice with azoxymethane (AOM) or dextran sodium sulfate (DSS) increased the numbers and sizes of colon tumors. These effects were associated with an increase in intestinal epithelial cell proliferation following AOM/DSS treatment. In patients with colon cancer, miR-449a expression was inversely correlated with disease-free survival and histological scores and was positively correlated with the expression of MLH1 for which loss-of function mutations have been shown to be involved in colon cancer. Colon tissues of miR-449a-deficient mice showed reduced Mlh1 expression compared with those of wild-type mice. Thus, these data suggested that miR-449a acted as a key regulator of colon tumorigenesis by controlling the proliferation of intestinal epithelial cells. Additionally, activation of miR-449a may represent an effective therapeutic strategy and prognostic marker in colon cancer.
(徳島大学機関リポジトリ): ● Metadata: 112383
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-017-10500-0
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28878284; ● Summary page in Scopus @ Elsevier: 2-s2.0-85029002400

(徳島大学機関リポジトリ: 112383, DOI: 10.1038/s41598-017-10500-0, PubMed: 28878284, Elsevier: Scopus) Sultana Taskia Zaman, Hideki Arimochi, Satoshi Maruyama, Chieko Ishifune, Shin-ichi Tsukumo, Akiko Kitamura and Koji Yasutomo :
Notch Balances Th17 and Induced Regulatory T Cell Functions in Dendritic Cells by Regulating Aldh1a2 Expression.,
The Journal of Immunology, Vol.199, No.6, 1989-1997, 2017.

(要約): Dendritic cells (DCs) are important for adaptive immune responses through the activation of T cells. The molecular interplay between DCs and T cells determines the magnitude of T cell responses or outcomes of functional differentiation of T cells. In this study, we demonstrated that DCs in mice that are Rbpj deficient in CD11c(+) cells (Rbpj(-/-) mice) promoted the differentiation of IL-17A-producing Th17 cells. Rbpj-deficient DCs expressed little Aldh1a2 protein that is required for generating retinoic acid. Those DCs exhibited a reduced ability for differentiating regulatory T cells induced by TGF-. Rbpj protein directly regulated Aldh1a2 transcription by binding to its promoter region. The overexpression of Aldh1a2 in Rbpj-deficient DCs negated their Th17-promoting ability. Transfer of naive CD4(+) T cells into Rag1-deficient Rbpj(-/-) mice enhanced colitis with increased Th17 and reduced induced regulatory T cells (iTreg) compared with control Rag1-deficient mice. The cotransfer of iTreg and naive CD4(+) T cells into Rag1-deficient Rbpj(-/-) mice improved colitis compared with transfer of naive CD4(+) T cell alone. Furthermore, cotransfer of DCs from Rbpj(-/-) mice that overexpressed Aldh1a2 or Notch-stimulated DCs together with naive CD4(+) T cells into Rbpj(-/-)Rag1-deficient mice led to reduced colitis with increased iTreg numbers. Therefore, our studies identify Notch signaling in DCs as a crucial balancer of Th17/iTreg, which depends on the direct regulation of Aldh1a2 transcription in DCs.
(徳島大学機関リポジトリ): ● Metadata: 110921
(出版サイトへのリンク): ● Publication site (DOI): 10.4049/jimmunol.1700645
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28779023; ● Search Scopus @ Elsevier (PMID): 28779023; ● Search Scopus @ Elsevier (DOI): 10.4049/jimmunol.1700645

(徳島大学機関リポジトリ: 110921, DOI: 10.4049/jimmunol.1700645, PubMed: 28779023) Kazumi Okamura, Akiko Kitamura, Yoshiteru Sasaki, Hyun Doo Chung, Shoji Kagami, Kazuhiro Iwai and Koji Yasutomo :
Survival of mature T cells depends on signaling through HOIP.,
Scientific Reports, Vol.6, 36135, 2016.

(要約): T cell development in the thymus is controlled by a multistep process. The NF-B pathway regulates T cell development as well as T cell activation at multiple differentiation stages. The linear ubiquitin chain assembly complex (LUBAC) is composed of Sharpin, HOIL-1L and HOIP, and it is crucial for regulating the NF-B and cell death pathways. However, little is known about the roles of LUBAC in T-cell development and activation. Here, we show that in T-HOIP(linear) mice lacking the ubiquitin ligase activity of LUBAC, thymic CD4(+) or CD8(+) T cell numbers were markedly reduced with severe defects in NKT cell development. HOIP(linear) CD4(+) T cells failed to phosphorylate IB and JNK through T cell receptor-mediated stimulation. Mature CD4(+) and CD8(+) T cells in T-HOIP(linear) mice underwent apoptosis more rapidly than control T cells, and it was accompanied by lower CD127 expression on CD4(+)CD24(low) and CD8(+)CD24(low) T cells in the thymus. The enforced expression of CD127 in T-HOIP(linear) thymocytes rescued the development of mature CD8(+) T cells. Collectively, our results showed that LUBAC ligase activity is key for the survival of mature T cells, and suggest multiple roles of the NF-B and cell death pathways in activating or maintaining T cell-mediated adaptive immune responses.
(徳島大学機関リポジトリ): ● Metadata: 112366
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/srep36135
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27786304; ● Search Scopus @ Elsevier (PMID): 27786304; ● Search Scopus @ Elsevier (DOI): 10.1038/srep36135

(徳島大学機関リポジトリ: 112366, DOI: 10.1038/srep36135, PubMed: 27786304) Takahiro Furukawa, Chieko Ishifune, Shin-ichi Tsukumo, Katsuto Hozumi, Yoichi Maekawa, Naoko Matsui, Ryuji Kaji and Koji Yasutomo :
Transmission of survival signals through Delta-like 1 on activated CD4(+) T cells.,
Scientific Reports, Vol.6, 33692, 2016.

(要約): Notch expressed on CD4(+) T cells transduces signals that mediate their effector functions and survival. Although Notch signaling is known to be cis-inhibited by Notch ligands expressed on the same cells, the role of Notch ligands on T cells remains unclear. In this report we demonstrate that the CD4(+) T cell Notch ligand Dll1 transduces signals required for their survival. Co-transfer of CD4(+) T cells from Dll1(-/-) and control mice into recipient mice followed by immunization revealed a rapid decline of CD4(+) T cells from Dll1(-/-) mice compared with control cells. Dll1(-/-) mice exhibited lower clinical scores of experimental autoimmune encephalitis than control mice. The expression of Notch target genes in CD4(+) T cells from Dll1(-/-) mice was not affected, suggesting that Dll1 deficiency in T cells does not affect cis Notch signaling. Overexpression of the intracellular domain of Dll1 in Dll1-deficient CD4(+) T cells partially rescued impaired survival. Our data demonstrate that Dll1 is an independent regulator of Notch-signaling important for the survival of activated CD4(+) T cells, and provide new insight into the physiological roles of Notch ligands as well as a regulatory mechanism important for maintaining adaptive immune responses.
(徳島大学機関リポジトリ): ● Metadata: 112325
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/srep33692
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27659682; ● Summary page in Scopus @ Elsevier: 2-s2.0-84988568998

(徳島大学機関リポジトリ: 112325, DOI: 10.1038/srep33692, PubMed: 27659682, Elsevier: Scopus) Jaba Gamrekelashvili, Roberto Giagnorio, Jasmin Jussofie, Oliver Soehnlein, Johan Duchene, G Carlos Briseño, K Saravana Ramasamy, Kashyap Krishnasamy, Anne Limbourg, Tamar Kapanadze, Chieko Ishifune, Rabea Hinkel, Freddy Radtke, J Lothar Strobl, Ursula Zimber-Strobl, Christian L Napp, Johann Bauersachs, Hermann Haller, Koji Yasutomo, Christian Kupatt, M Kenneth Murphy, H Ralf Adams, Christian Weber and P Florian Limbourg :
Regulation of monocyte cell fate by blood vessels mediated by Notch signalling.,
Nature Communications, Vol.7, 12597, 2016.

(要約): A population of monocytes, known as Ly6C(lo) monocytes, patrol blood vessels by crawling along the vascular endothelium. Here we show that endothelial cells control their origin through Notch signalling. Using combinations of conditional genetic deletion strategies and cell-fate tracking experiments we show that Notch2 regulates conversion of Ly6C(hi) monocytes into Ly6C(lo) monocytes in vivo and in vitro, thereby regulating monocyte cell fate under steady-state conditions. This process is controlled by Notch ligand delta-like 1 (Dll1) expressed by a population of endothelial cells that constitute distinct vascular niches in the bone marrow and spleen in vivo, while culture on recombinant DLL1 induces monocyte conversion in vitro. Thus, blood vessels regulate monocyte conversion, a form of committed myeloid cell fate regulation.
(徳島大学機関リポジトリ): ● Metadata: 112441
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/ncomms12597
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27576369; ● Summary page in Scopus @ Elsevier: 2-s2.0-84984985562

(徳島大学機関リポジトリ: 112441, DOI: 10.1038/ncomms12597, PubMed: 27576369, Elsevier: Scopus) Hideki Arimochi, Yuki Sasaki, Akiko Kitamura and Koji Yasutomo :
Differentiation of preadipocytes and mature adipocytes requires PSMB8.,
Scientific Reports, Vol.6, 26791, 2016.

(要約): The differentiation of adipocytes is tightly regulated by a variety of intrinsic molecules and also by extrinsic molecules produced by adjacent cells. Dysfunction of adipocyte differentiation causes lipodystrophy, which impairs glucose and lipid homeostasis. Although dysfunction of immunoproteasomes causes partial lipodystrophy, the detailed molecular mechanisms remain to be determined. Here, we demonstrate that Psmb8, a catalytic subunit for immunoproteasomes, directly regulates the differentiation of preadipocytes and additionally the differentiation of preadipocytes to mature adipocytes. Psmb8(-/-) mice exhibited slower weight gain than wild-type mice, and this was accompanied by reduced adipose tissue volume and smaller size of mature adipocytes compared with controls. Blockade of Psmb8 activity in 3T3-L1 cells disturbed the differentiation to mature adipocytes. Psmb8(-/-) mice had fewer preadipocyte precursors, fewer preadipocytes and a reduced ability to differentiate preadipocytes toward mature adipocytes. Our data demonstrate that Psmb8-mediated immunoproteasome activity is a direct regulator of the differentiation of preadipocytes and their ultimate maturation.
(徳島大学機関リポジトリ): ● Metadata: 112317
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/srep26791
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27225296; ● Summary page in Scopus @ Elsevier: 2-s2.0-84971351712

(徳島大学機関リポジトリ: 112317, DOI: 10.1038/srep26791, PubMed: 27225296, Elsevier: Scopus) Shinya Yoshida, Koji Yasutomo and Toshiyuki Watanabe :
Treatment with DHA/EPA ameliorates atopic dermatitis-like skin disease by blocking LTB4 production.,
The Journal of Medical Investigation : JMI, Vol.63, No.3-4, 187-191, 2016.

(要約): Atopic dermatitis (AD) is caused by both dysregulated immune responses and an impaired skin barrier. Although leukotriene B4 (LTB4) is involved in tissue inflammation that occurs in several disorders, including AD, therapeutic strategies based on LTB4 inhibition have not been explored. Here we demonstrate that progression of an AD-like skin disease in NC/Nga mice is inhibited when docosahexaenoic acid (DHA)/eicosapentaenoic acid (EPA) is administered together with FK506. Treatment with DHA/EPA and FK506 decreases the clinical score of dermatitis in NC/Nga mice and lowers local LTB4 concentrations. The treatment also suppressed the infiltration of T cells, B cells, eosinophils and neutrophils, and promoted reduced serum IgE levels. Secretion of IL-13 and IL-17A in CD4(+) T cells was lower in DHA/EPA- and FK506-treated mice than in mice treated with FK506 alone. The inhibition of disease progression induced by DHA/EPA was reversed by local injection of LTB4, suggesting that the therapeutic effect of DHA/EPA is LTB4-dependent. Our results demonstrate that treatment of AD with DHA/EPA is effective for allergic skin inflammation and acts by suppressing LTB4 production. J. Med. Invest. 63: 187-191, August, 2016.
(徳島大学機関リポジトリ): ● Metadata: 111179
(出版サイトへのリンク): ● Publication site (DOI): 10.2152/jmi.63.187
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27644556; ● Search Scopus @ Elsevier (PMID): 27644556; ● Search Scopus @ Elsevier (DOI): 10.2152/jmi.63.187

(徳島大学機関リポジトリ: 111179, DOI: 10.2152/jmi.63.187, PubMed: 27644556) M Thomas Seed, Shiyun Xiao, Nancy Manley, Janko Nikolich-Zugich, Jason Pugh, Marcel den Brink Van, Yoko Hirabayashi, Koji Yasutomo, Atsushi Iwama, Shigeo Koyasu, Ivo Shterev, Gregory Sempowski, Francesca Macchiarini, Kei Nakachi, C Keith Kunugi, G Clifford Hammer and A Lawrence Dewerd :
An interlaboratory comparison of dosimetry for a multi-institutional radiobiological research project: Observations, problems, solutions and lessons learned.,
International Journal of Radiation Biology, Vol.92, No.2, 59-70, 2015.

(要約): For the dosimetrically non-compliant laboratories, the relatively high rates of dosing errors were problematic, potentially compromising the quality of ongoing radiobiological research. This dosimetry effort proved to be instructive in establishing rigorous reviews of basic dosimetry protocols ensuring that dosing errors were minimized.
(キーワード): Absorption, Radiation / Animals / Equipment Design / Equipment Failure Analysis / Laboratories / Mice / Radiation Exposure / Reproducibility of Results / Sensitivity and Specificity / Whole-Body Counting / Whole-Body Irradiation
(出版サイトへのリンク): ● Publication site (DOI): 10.3109/09553002.2015.1106024
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26857121; ● Search Scopus @ Elsevier (PMID): 26857121; ● Search Scopus @ Elsevier (DOI): 10.3109/09553002.2015.1106024

(DOI: 10.3109/09553002.2015.1106024, PubMed: 26857121) SJ Oh, S Ahn, YH Jin, Chieko Ishifune, JH Kim, Koji Yasutomo and DH Chung :
Notch 1 and Notch 2 synergistically regulate the differentiation and function of invariant NKT cells.,
Journal of Leukocyte Biology, Vol.98, No.5, 781-789, 2015.

(要約): Invariant natural killer T cells are a distinct subset of T cells that exert Janus-like functions. Moreover, Notch signaling is known to have critical roles in the development and functions of T cells. However, it is not known whether Notch signaling contributes to the development or functions of invariant natural killer T cells. Here, we found that CD4-specific gene ablation of Notch 1 and Notch 2 (N1N2(-/-)) increased the number of invariant natural killer T cells in the thymus but decreased them in the liver. N1N2(-/-) mice showed impaired thymic maturation of invariant natural killer T cells from the NK1.1(-)CD44(+) to the NK1.1(+)CD44(+) stage, resulting in accumulation of NK1.1(-)CD44(+) invariant natural killer T cells in the thymus. Upon activation, hepatic invariant natural killer T cells from N1N2(-/-) mice produced lower cytokine levels and increased apoptosis versus wild-type invariant natural killer T cells. Furthermore, Notch 1/Notch 2-deficient, but not wild type, invariant natural killer T cells failed to promote antibody-induced arthritis in CD1d(-/-) mice. Unlike N1N2(-/-) mice, RBP-j(lox) (/) (lox) CD4-Cre mice showed similar percentages and numbers of thymic invariant natural killer T cells to wild-type mice but had defects in their homeostasis, maturation, and cytokine production in the liver. Taken together, our data indicate distinct effects of Notch signaling on invariant natural killer T cells in the thymus and liver, which are at least partly independent of RBP-j in the thymus.
(出版サイトへのリンク): ● Publication site (DOI): 10.1189/jlb.1A0914-459RR
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26188077; ● Summary page in Scopus @ Elsevier: 2-s2.0-84946011357

(DOI: 10.1189/jlb.1A0914-459RR, PubMed: 26188077, Elsevier: Scopus) Kurihara Takeshi, Hideki Arimochi, Bhuyan Ahmed Zaied, Chieko Ishifune, Tsumura Hideki, Ito Morihiro, Ito Yasuhiko, Akiko Kitamura, Yoichi Maekawa and Koji Yasutomo :
CD98 Heavy Chain Is a Potent Positive Regulator of CD⁴⁺ T Cell Proliferation and Interferon- Production In Vivo,
PLoS ONE, Vol.10, No.10, e0139692, 2015.

(要約): Upon their recognition of antigens presented by the MHC, T cell proliferation is vital for clonal expansion and the acquisition of effector functions, which are essential for mounting adaptive immune responses. The CD98 heavy chain (CD98hc, Slc3a2) plays a crucial role in the proliferation of both CD4+ and CD8+ T cells, although it is unclear if CD98hc directly regulates the T cell effector functions that are not linked with T cell proliferation in vivo. Here, we demonstrate that CD98hc is required for both CD4+ T cell proliferation and Th1 functional differentiation. T cell-specific deletion of CD98hc did not affect T cell development in the thymus. CD98hc-deficient CD4+ T cells proliferated in vivo more slowly as compared with control T cells. C57BL/6 mice lacking CD98hc in their CD4+ T cells could not control Leishmania major infections due to lowered IFN- production, even with massive CD4+ T cell proliferation. CD98hc-deficient CD4+ T cells exhibited lower IFN- production compared with wild-type T cells, even when comparing IFN- expression in cells that underwent the same number of cell divisions. Therefore, these data indicate that CD98hc is required for CD4+ T cell expansion and functional Th1 differentiation in vivo, and suggest that CD98hc might be a good target for treating Th1-mediated immune disorders.
(徳島大学機関リポジトリ): ● Metadata: 114921
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0139692
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26444422; ● Search Scopus @ Elsevier (PMID): 26444422; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0139692

(徳島大学機関リポジトリ: 114921, DOI: 10.1371/journal.pone.0139692, PubMed: 26444422) Yoichi Maekawa, Chieko Ishifune, Shin-ichi Tsukumo, Katsuto Hozumi, Hideo Yagita and Koji Yasutomo :
Notch controls the survival of memory CD4+ T cells by regulating glucose uptake.,
Nature Medicine, Vol.21, No.1, 55-61, 2015.

(要約): CD4+ T cells differentiate into memory T cells that protect the host from subsequent infection. In contrast, autoreactive memory CD4+ T cells harm the body by persisting in the tissues. The underlying pathways controlling the maintenance of memory CD4+ T cells remain undefined. We show here that memory CD4+ T cell survival is impaired in the absence of the Notch signaling protein known as recombination signal binding protein for immunoglobulin J region (Rbpj). Treatment of mice with a Notch inhibitor reduced memory CD4+ T cell numbers and prevented the recurrent induction of experimental autoimmune encephalomyelitis. Rbpj-deficient CD4+ memory T cells exhibit reduced glucose uptake due to impaired AKT phosphorylation, resulting in low Glut1 expression. Treating mice with pyruvic acid, which bypasses glucose uptake and supplies the metabolite downstream of glucose uptake, inhibited the decrease of autoimmune memory CD4+ T cells in the absence of Notch signaling, suggesting memory CD4+ T cell survival relies on glucose metabolism. Together, these data define a central role for Notch signaling in maintaining memory CD4+ T cells through the regulation of glucose uptake.
(キーワード): Animals / CD4-Positive T-Lymphocytes / Glucose / Glucose Transporter Type 1 / Humans / Immunoglobulin J Recombination Signal Sequence-Binding Protein / Mice / Oncogene Protein v-akt / Receptors, Antigen, T-Cell / Receptors, Notch / Signal Transduction
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/nm.3758
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25501905; ● Summary page in Scopus @ Elsevier: 2-s2.0-84925284022

(DOI: 10.1038/nm.3758, PubMed: 25501905, Elsevier: Scopus) Akiko Kitamura, Yuki Sasaki, Takaya Abe, Hirotsugu Kano and Koji Yasutomo :
An inherited mutation in NLRC4 causes autoinflammation in human and mice.,
The Journal of Experimental Medicine, Vol.211, No.12, 2385-2396, 2014.

(要約): Autoinflammatory syndromes cause sterile inflammation in the absence of any signs of autoimmune responses. Familial cold autoinflammatory syndrome (FCAS) is characterized by intermittent episodes of rash, arthralgia, and fever after exposure to cold stimuli. We have identified a missense mutation in the NLRC4 gene in patients with FCAS. NLRC4 has been known as a crucial sensor for several Gram-negative intracellular bacteria. The mutation in NLRC4 in FCAS patients promoted the formation of NLRC4-containing inflammasomes that cleave procaspase-1 and increase production of IL-1. Transgenic mice that expressed mutant Nlrc4 under the invariant chain promoter developed dermatitis and arthritis. Inflammation within tissues depended on IL-1-mediated production of IL-17A from neutrophils but not from T cells. Our findings reveal a previously unrecognized link between NLRC4 and a hereditary autoinflammatory disease and highlight the importance of NLRC4 not only in the innate immune response to bacterial infections but also in the genesis of inflammatory diseases.
(キーワード): Amino Acid Sequence / Animals / Apoptosis Regulatory Proteins / Blotting, Western / CARD Signaling Adaptor Proteins / Calcium-Binding Proteins / Caspase 1 / Cells, Cultured / Cryopyrin-Associated Periodic Syndromes / Female / Flow Cytometry / Genetic Predisposition to Disease / Genotype / HEK293 Cells / Humans / Inflammasomes / Interleukin-17 / Interleukin-1beta / Male / Mice, Inbred C57BL / Mice, Transgenic / Molecular Sequence Data / Mutation, Missense / Neutrophils / Pedigree / Sequence Homology, Amino Acid
(出版サイトへのリンク): ● Publication site (DOI): 10.1084/jem.20141091
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25385754; ● Summary page in Scopus @ Elsevier: 2-s2.0-84911922142

(DOI: 10.1084/jem.20141091, PubMed: 25385754, Elsevier: Scopus) Chieko Ishifune, Satoshi Maruyama, Yuki Sasaki, Hideo Yagita, Katsuto Hozumi, Taisuke Tomita, Kenji Kishihara and Koji Yasutomo :
Differentiation of CD11c+ CX3CR1+ cells in the small intestine requires Notch signaling.,
Proceedings of the National Academy of Sciences of the United States of America, Vol.111, No.16, 5986-5991, 2014.

(要約): The gastrointestinal tract comes into direct contact with environmental agents, including bacteria, viruses, and foods. Intestine-specific subsets of immune cells maintain gut homeostasis by continuously sampling luminal antigens and maintaining immune tolerance. CD11c(+)CX3CR1(+) cells sample luminal antigens in the small intestine and contribute to the trafficking of bacteria to lymph nodes under dysbiotic conditions. The molecular mechanisms crucial for the differentiation of CD11c(+)CX3CR1(+) cells remain unclear. Here we demonstrate that the Notch1- or Notch2-Rbpj axis is essential for the development of CD11c(+)CX3CR1(+) cells. In mice in which Rbpj or Notch1 and Notch2 were deleted from CD11c(+) cells, there was a deficit of CD11c(+)CX3CR1(+) cells and an accumulation of CD11c(low)CX3CR1(+) cells. The CD11c(low)CX3CR1(+) cells could not differentiate to CD11c(+)CX3CR1(+) cells, suggesting that CD11c(low)CX3CR1(+) cells represent a lineage distinct from CD11c(+)CX3CR1(+) cells. These data indicate that Notch signaling is essential for lineage fixation of intestinal CD11c(+)CX3CR1(+) cells.
(キーワード): Animals / Antigens, CD11c / Cell Count / Cell Differentiation / Immunoglobulin J Recombination Signal Sequence-Binding Protein / Intestine, Small / Mice / Mice, Inbred C57BL / Receptors, Chemokine / Receptors, Notch / Signal Transduction
(出版サイトへのリンク): ● Publication site (DOI): 10.1073/pnas.1401671111
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 24711412; ● Search Scopus @ Elsevier (PMID): 24711412; ● Search Scopus @ Elsevier (DOI): 10.1073/pnas.1401671111

(DOI: 10.1073/pnas.1401671111, PubMed: 24711412) Ahmed Zaied Bhuyan, Michihito Asanoma, Akiko Iwata, Chieko Ishifune, Yoichi Maekawa, Mitsuo Shimada and Koji Yasutomo :
Abrogation of Rbpj attenuates experimental autoimmune uveoretinitis by inhibiting IL-22-producing CD4+ T cells.,
PLoS ONE, Vol.9, No.2, e89266, 2014.

(要約): Experimental autoimmune uveoretinitis (EAU) is an organ-specific T cell-mediated disease induced by immunizing mice with interphotoreceptor retinoid binding protein (IRBP). Autoaggressive CD4(+) T cells are the major pathogenic population for EAU. We investigated the contribution of Notch signaling in T cells to EAU pathogenesis because Notch signaling regulates various aspects of CD4(+) T cell functions. Rbpj is required for Notch signaling, and Rbpj deficiency in T cells inhibited EAU disease severity. The amelioration of EAU in T cell-specific Rbpj-deficient mice correlated with low levels of IL-22 production from CD4(+) T cells, although IRBP-specific CD4(+) T cell proliferation and Th17 differentiation were unaffected. Administration of recombinant IL-22 during the late phase, but not the early phase, of EAU increased EAU clinical scores in T cell-specific Rbpj-deficient mice. Notch inhibition in mice immunized with IRBP with a -secretase inhibitor (GSI) suppressed EAU progression, even when GSI was administered as late as 13 days after IRBP immunization. Our data demonstrate that Rbpj/Notch-mediated IL-22 production in T cells has a key pathological role in the late phase of EAU, and suggest that Notch blockade might be a useful therapeutic approach for treating EAU.
(徳島大学機関リポジトリ): ● Metadata: 106133
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0089266
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 24586644; ● Search Scopus @ Elsevier (PMID): 24586644; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0089266

(徳島大学機関リポジトリ: 106133, DOI: 10.1371/journal.pone.0089266, PubMed: 24586644) Ahmed Zaied Bhuyan, Hideki Arimochi, Jun Nishida, Keiko Kataoka, Takeshi Kurihara, Chieko Ishifune, Hideki Tsumura, Morihiro Ito, Yasuhiko Ito, Akiko Kitamura and Koji Yasutomo :
CD98hc regulates the development of experimental colitis by controlling effector and regulatory CD4(+) T cells.,
Biochemical and Biophysical Research Communications, Vol.444, No.4, 628-633, 2014.

(要約): CD4(+) T cell activation is controlled by signaling through the T cell receptor in addition to various co-receptors, and is also affected by their interactions with effector and regulatory T cells in the microenvironment. Inflammatory bowel diseases (IBD) are caused by the persistent activation and expansion of auto-aggressive CD4(+) T cells that attack intestinal epithelial cells. However, the molecular basis for the persistent activation of CD4(+) T cells in IBD remains unclear. In this study, we investigated how the CD98 heavy chain (CD98hc, Slc3a2) affected the development of colitis in an experimental animal model. Transferring CD98hc-deficient CD4(+)CD25(-) T cells into Rag2(-/-) mice did not cause colitis accompanied by increasing Foxp3(+) inducible regulatory T cells. By comparison, CD98hc-deficient naturally occurring regulatory T cells (nTregs) had a decreased capability to suppress colitis induced by CD4(+)CD25(-) T cells, although CD98hc-deficient mice did not have a defect in the development of nTregs. Blocking CD98hc with an anti-CD98 blocking antibody prevented the development of colitis. Our results indicate that CD98hc regulates the expansion of autoimmune CD4(+) T cells in addition to controlling nTregs functions, which suggests the CD98hc as an important target molecule for establishing strategies for treating colitis.
(キーワード): Animals / Antigens, CD98 Heavy Chain / Autoimmune Diseases / CD4-Positive T-Lymphocytes / Colitis / Colon / DNA-Binding Proteins / Gene Deletion / Interleukin-2 Receptor alpha Subunit / Mice / Mice, Inbred BALB C / Mice, Inbred C57BL
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbrc.2014.01.144
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 24491544; ● Summary page in Scopus @ Elsevier: 2-s2.0-84894522828

(DOI: 10.1016/j.bbrc.2014.01.144, PubMed: 24491544, Elsevier: Scopus) Akihisa Sawada, Shouichi Ohga, Eiichi Ishii, Masami Inoue, Keiko Okada, Jiro Inagaki, Hiroaki Goto, Nobuhiro Suzuki, Kazutoshi Koike, Yoshiko Atsuta, Ritsuro Suzuki, Hiromasa Yabe, Keisei Kawa, Koji Kato and Koji Yasutomo :
Feasibility of reduced-intensity conditioning followed by unrelated cord blood transplantation for primary hemophagocytic lymphohistiocytosis: a nationwide retrospective analysis in Japan.,
International Journal of Hematology, Vol.98, No.2, 223-230, 2013.

(要約): A nationwide retrospective analysis was performed on patients who received allogeneic hematopoietic stem cell transplantation for primary or familial hemophagocytic lymphohistiocytosis (HLH) in Japan. The present analysis investigated whether reduced-intensity conditioning (RIC) followed by cord blood transplantation (CBT) (RIC-CBT) is feasible, compared to the outcomes of myeloablative conditioning and bone marrow transplantation. Based on the JSHCT data, 53 patients were analyzed. The overall survival rate (OS) was 65.4 ± 6.6 %. RIC-CBT (n = 13) was not inferior to other methods. Patients with a performance status of PS 4 (ECOG scale) with HLH-associated severe organ dysfunction during the initiation of conditioning had extremely poor outcomes. The OS rate in the RIC-CBT patients, excluding those with a performance status 4, was 80.0 ± 12.6 %. RIC may reduce treatment-related mortality; in addition, patients with engraftment failure, which is the main adverse event following RIC-CBT, were successfully rescued with secondary CBT. Unrelated cord blood may represent an alternative source if a patient has no related donor. As a RIC regimen for CBT, 140 mg/m(2) melphalan with fludarabine and anti-lymphocyte globulin or anti-thymocyte globulin may be feasible, but further dosage optimization should be performed in controlled clinical trials.
(キーワード): Adolescent / Allografts / Antilymphocyte Serum / Child / Child, Preschool / Cord Blood Stem Cell Transplantation / Disease-Free Survival / Female / Humans / Immunosuppressive Agents / Infant / Japan / Lymphohistiocytosis, Hemophagocytic / Male / Melphalan / Myeloablative Agonists / Survival Rate / Transplantation Conditioning / Unrelated Donors / Vidarabine
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s12185-013-1391-z
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23843148; ● Search Scopus @ Elsevier (PMID): 23843148; ● Search Scopus @ Elsevier (DOI): 10.1007/s12185-013-1391-z

(DOI: 10.1007/s12185-013-1391-z, PubMed: 23843148) Kohhei Nakajima, Yoichi Maekawa, Keiko Kataoka, Chieko Ishifune, Jun Nishida, Hideki Arimochi, Akiko Kitamura, Takayuki Yoshimoto, Shuhei Tomita, Shinji Nagahiro and Koji Yasutomo :
The ARNT-STAT3 axis regulates the differentiation of intestinal intraepithelial TCRαβ⁺CD8αα⁺cells.,
Nature Communications, Vol.4, 2112, 2013.

(要約): Intestinal intraepithelial T cells contribute to the regulation of inflammatory responses in the intestine; however, the molecular basis for their development and maintenance is unknown. The aryl hydrocarbon receptor complexes with the aryl hydrocarbon receptor nuclear translocator (ARNT) and senses environmental factors, including gut microbiota. Here, we identify ARNT as a critical regulator of the differentiation of TCRαβ(+)CD8αα(+) intestinal intraepithelial T cells. Mice deficient in either ARNT or aryl hydrocarbon receptor show a greater than- eight-fold reduction in the number of TCRαβ(+)CD8αα(+) intestinal intraepithelial T cells. The number of TCRαβ(+)CD8αα(+) intestinal intraepithelial T cells is increased by treatment with an aryl hydrocarbon receptor agonist in germ-free mice and is decreased by antibiotic treatment. The Arnt-deficient precursors of TCRαβ(+)CD8αα(+) intestinal intraepithelial T cells express low amounts of STAT3 and fail to differentiate towards the TCRαβ(+)CD8αα(+) cell fate after IL-15 stimulation, a deficiency that is overcome by overexpression of Stat3. These data demonstrate that the ARNT-STAT3 axis is a critical regulator of TCRαβ(+)CD8αα(+) intestinal intraepithelial T-cell development and differentiation.
(キーワード): Animals / Antigens, CD8 / Aryl Hydrocarbon Receptor Nuclear Translocator / CD8-Positive T-Lymphocytes / Cell Differentiation / Cells, Cultured / Female / Gene Expression Regulation / Interleukin-15 / Intestinal Mucosa / Intestines / Mice / Mice, Inbred C57BL / Mice, Transgenic / Precursor Cells, T-Lymphoid / Receptors, Antigen, T-Cell, alpha-beta / STAT3 Transcription Factor / Signal Transduction / beta-Naphthoflavone
(徳島大学機関リポジトリ): ● Metadata: 105939
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/ncomms3112
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23836150; ● Summary page in Scopus @ Elsevier: 2-s2.0-84880260699

(徳島大学機関リポジトリ: 105939, DOI: 10.1038/ncomms3112, PubMed: 23836150, Elsevier: Scopus) Minoru Ichimura, Keiko Uchida, Haruyuki Nakayama-Imaohji, Hideki Hirakawa, Tomoyo Tada, Hidetoshi Morita, Koji Yasutomo, Katsuichiro Okazaki and Tomomi Kuwahara :
Mariner-based transposon mutagenesis for Bacteroides species.,
Journal of Basic Microbiology, Vol.54, No.6, 558-567, 2013.

(要約): Bacteroides is one of the most predominant groups of human gut microbiota. Recent metagenomic analyses and studies on gnotobiotic mice demonstrated the tight association of Bacteroides with epithelial function, the gut immune system and systemic metabolism in the host. The mariner family transposon shows relatively low target site specificity and has hosts ranging from prokaryotes to eukaryotes. Thereby, random mutagenesis using the mariner family transposon is expected to identify key molecules for human-Bacteroides symbiosis. In this study, we constructed the plasmid pMI07 to deliver the gene cassette (ermF/ITR), which harbors the erythromycin resistant marker (ermF) and the inverted repeat sequences (ITRs) recognized by Himar1 transposase, to Bacteroides via electrotransformation. pMI07 successfully delivered ermF/ITR to the Bacteroides genomes and generated thousands of insertion mutants/g of pMI07 in B. thetaiotaomicron, B. fragilis, B. ovatus, and also, although to a lesser extent, B. vulgatus. Analyses of the ermF/ITR insertion sites in B. thetaiotaomicron and B. vulgatus revealed that the cassette targeted the dinucleotide TA and integrated into the genomes in an unbiased manner. The data reported here will provide useful information for transposon mutagenesis in Bacteroides species, which will enable identification of the genes responsible for their unique phenotypes.
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/jobm.201200763
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23686946; ● Search Scopus @ Elsevier (PMID): 23686946; ● Search Scopus @ Elsevier (DOI): 10.1002/jobm.201200763

(DOI: 10.1002/jobm.201200763, PubMed: 23686946) Shin Wakimoto, Haruyuki Nakayama-Imaohji, Minoru Ichimura, Hidetoshi Morita, Hideki Hirakawa, Tetsuya Hayashi, Koji Yasutomo and Tomomi Kuwahara :
PhoB regulates the survival of Bacteroides fragilis in peritoneal abscesses.,
PLoS ONE, Vol.8, No.1, e53829, 2013.

(要約): In response to phosphate limitation, bacteria employ the Pho regulon, a specific regulatory network for phosphate acquisition. The two-component signal transduction system of PhoRB plays a crucial role in the induction of Pho regulon genes, leading to the adaptation to phosphate starvation. Herein, we identified the PhoRB system in Bacteroides fragilis, a commensal gut bacterium, and evaluated its role in gut colonization and survival in peritoneal abscesses. BF1575 and BF1576 encoded PhoR (sensor histidine kinase) and PhoB (response regulator) in the sequenced B. fragilis strain YCH46, respectively. Transcriptome analysis revealed that deletion of phoB affected the expression of 585 genes (more than 4-fold change) in B. fragilis, which included genes for stress response (chaperons and heat shock proteins), virulence (capsular polysaccharide biosynthesis) and phosphate metabolism. Deletion of phoB reduced the ability of the bacterium to persist in peritoneal abscesses induced by an intra-abdominal challenge of B. fragilis. Furthermore, PhoB was necessary for survival of this anaerobe in peritoneal abscesses but not for in vitro growth in rich media or in intestinal colonization. These results indicate that PhoB plays an important role in the survival of B. fragilis under stressful extraintestinal conditions.
(キーワード): Abdominal Abscess / Animals / Bacterial Proteins / Bacteroides Infections / Bacteroides fragilis / Male / Mice / Mice, Inbred C57BL / Microbial Viability / Peritoneum / Protein Kinases / Regulon / Signal Transduction / Stress, Physiological
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0053829
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23342014; ● Search Scopus @ Elsevier (PMID): 23342014; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0053829

(DOI: 10.1371/journal.pone.0053829, PubMed: 23342014) Takuya Kuramoto, Hisatsugu Goto, Atsushi Mitsuhashi, Sho Tabata, Hirohisa Ogawa, Hisanori Uehara, Atsuro Saijo, Souji Kakiuchi, Yoichi Maekawa, Koji Yasutomo, Masaki Hanibuchi, Shin-ichi Akiyama, Saburo Sone and Yasuhiko Nishioka :
Dll4-Fc, an inhibitor of Dll4-Notch signaling, suppresses liver metastasis of small cell lung cancer cells through down-regulation of NF-kappa-B activity,
Molecular Cancer Therapeutics, Vol.11, No.12, 2578-2587, 2012.

(要約): Notch signaling regulates cell-fate decisions during development and postnatal life. Little is known, however, about the role of Delta-like-4 (Dll4)-Notch signaling between cancer cells, or how this signaling affects cancer metastasis. We, therefore, assessed the role of Dll4-Notch signaling in cancer metastasis. We generated a soluble Dll4 fused to the IgG1 constant region (Dll4-Fc) that acts as a blocker of Dll4-Notch signaling and introduced it into human small cell lung cancer (SCLC) cell lines expressing either high levels (SBC-3 and H1048) or low levels (SBC-5) of Dll4. The effects of Dll4-Fc on metastasis of SCLC were evaluated using a mouse model. Although Dll4-Fc had no effect on the liver metastasis of SBC-5, the number of liver metastasis inoculated with SBC-3 and H1048 cells expressing Dll4-Fc was significantly lower than that injected with control cells. To study the molecular mechanisms of the effects of Dll4-Fc on liver metastasis, a PCR array analysis was conducted. Because the expression of NF-κB target genes was affected by Dll4-Fc, we conducted an electrophoretic mobility shift assay and observed that NF-κB activities, both with and without stimulation by TNF-α, were downregulated in Dll4-Fc-overexpressing SBC-3 and H1048 cells compared with control cells. Moreover, Dll4-Fc attenuates, at least in part, the classical and alternative NF-κB activation pathway by reducing Notch1 signaling. These results suggest that Dll4-Notch signaling in cancer cells plays a critical role in liver metastasis of SCLC by regulating NF-κB signaling.
(キーワード): Animals / アポトーシス (apoptosis) / Cell Growth Processes / Cell Movement / Down-Regulation / Humans / Liver Neoplasms, Experimental / Lung Neoplasms / Male / Mice / Mice, SCID / NF-kappa B / Receptors, Notch / Recombinant Fusion Proteins / シグナル伝達 (signal transduction) / Small Cell Lung Carcinoma / Transfection / Xenograft Model Antitumor Assays
(出版サイトへのリンク): ● Publication site (DOI): 10.1158/1535-7163.MCT-12-0640
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22989420; ● Search Scopus @ Elsevier (PMID): 22989420; ● Search Scopus @ Elsevier (DOI): 10.1158/1535-7163.MCT-12-0640

(DOI: 10.1158/1535-7163.MCT-12-0640, PubMed: 22989420) Masanori Nishi, Ryosei Nishimura, Nobuhiro Suzuki, Akihisa Sawada, Takayuki Okamura, Naoto Fujita, Rie Kanai, Jun Yano, Souichi Adachi, Takahiro Yasumi, Emiko Sato, Koji Yasutomo, Eiichi Ishii and Shouichi Ohga :
Reduced-intensity conditioning in unrelated donor cord blood transplantation for familial hemophagocytic lymphohistiocytosis.,
American Journal of Hematology, Vol.87, No.6, 637-639, 2012.

(要約): Familial hemophagocytic lymphohistiocytosis (FHL) is a disorder of immune homeostasis characterized by fever, cytopenias, hepatosplenomegaly, and coagulopathy. We studied the outcomes of 13 FHL patients who underwent the first unrelated cord blood transplantation (UCBT) after non-myeloablative conditionings. The major regimen consisted of fludarabine (FLU; n = 12)+melphalan (MEL; n = 11)± low-dose total body irradiation (TBI 2-4 Gy; n = 6). The median age at presentation and period to UCBT were 6 and 5 months, respectively. Central nervous system (CNS) disease developed in one infant at diagnosis, and in two others until UCBT. HLH activity was controlled in all but one at the time of UCBT. Ten patients had early engraftment on median day 21 with no grade >2 treatment-related toxicity and two controllable grade >2 acute GVHD. Two patients with early rejection successfully underwent subsequent UCBT after myeloablative conditioning. Two others had late graft failure following mixed donor chimerism. Two deaths occurred from HLH; early liver failure and late CNS disease. Of 11 FLU+MEL-conditioned patients, the frequency of disease-free complete engraftment was higher for MEL (120 mg/m(2) )+TBI, or high-dose MEL (180 mg/m(2) ) than for others (83% vs. 25%, p = 0.036). The FLU+MEL-based non-myeloablative regimen was acceptable for FHL infants undergoing UCBT, although further studies will be needed for confirmation.
(キーワード): Blood Component Transfusion / Blood Donors / Child, Preschool / Combined Modality Therapy / Cord Blood Stem Cell Transplantation / Disease-Free Survival / Female / Graft Survival / Graft vs Host Disease / Humans / Infant / Infant, Newborn / Japan / Lymphohistiocytosis, Hemophagocytic / Male / Melphalan / Reoperation / Retrospective Studies / Salvage Therapy / Transplantation Conditioning / Treatment Outcome / Vidarabine / Whole-Body Irradiation
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/ajh.23190
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22488407; ● Search Scopus @ Elsevier (PMID): 22488407; ● Search Scopus @ Elsevier (DOI): 10.1002/ajh.23190

(DOI: 10.1002/ajh.23190, PubMed: 22488407) Gaojian Lian, Hideki Arimochi, Akiko Kitamura, Jun Nishida, Shigen Li, Kenji Kishihara, Yoichi Maekawa and Koji Yasutomo :
Manipulation of CD98 resolves type 1 diabetes in nonobese diabetic mice.,
The Journal of Immunology, Vol.188, No.5, 2227-2234, 2012.

(要約): The interplay of CD4(+) and CD8(+) T cells targeting autoantigens is responsible for the progression of a number of autoimmune diseases, including type 1 diabetes mellitus (T1D). Understanding the molecular mechanisms that regulate T cell activation is crucial for designing effective therapies for autoimmune diseases. We probed a panel of Abs with T cell-modulating activity and identified a mAb specific for the H chain of CD98 (CD98hc) that was able to suppress T cell proliferation. The anti-CD98hc mAb also inhibited Ag-specific proliferation and the acquisition of effector function by CD4(+) and CD8(+) T cells in vitro and in vivo. Injection of the anti-CD98hc mAb completely prevented the onset of cyclophosphamide-induced diabetes in NOD mice. Treatment of diabetic NOD mice with anti-CD98hc reversed the diabetic state to normal levels, coincident with decreased proliferation of CD4(+) T cells. Furthermore, treatment of diabetic NOD mice with CD98hc small interfering RNA resolved T1D. These data indicate that strategies targeting CD98hc might have clinical application for treating T1D and other T cell-mediated autoimmune diseases.
(キーワード): Animals / Antibodies, Monoclonal / Antigens, CD98 Heavy Chain / CD4-Positive T-Lymphocytes / CD8-Positive T-Lymphocytes / Cyclophosphamide / Diabetes Mellitus, Type 1 / Female / Growth Inhibitors / Mice / Mice, Inbred BALB C / Mice, Inbred C57BL / Mice, Inbred NOD / Mice, SCID / Mice, Transgenic / Rats / Rats, Wistar
(出版サイトへのリンク): ● Publication site (DOI): 10.4049/jimmunol.1102586
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22291182; ● Search Scopus @ Elsevier (PMID): 22291182; ● Search Scopus @ Elsevier (DOI): 10.4049/jimmunol.1102586

(DOI: 10.4049/jimmunol.1102586, PubMed: 22291182) Shuichi Iwahashi, Yoichi Maekawa, Jun Nishida, Chieko Ishifune, Akiko Kitamura, Hideki Arimochi, Keiko Kataoka, Shigeru Chiba, Mitsuo Shimada and Koji Yasutomo :
Notch2 regulates the development of marginal zone B cells through Fos.,
Biochemical and Biophysical Research Communications, Vol.418, No.4, 701-707, 2012.

(要約): B cells are classified into several subsets depending on their functions, marker expression pattern and localization. Marginal zone B (MZB) cells are a distinct lineage from follicular B cells, and regulate host defenses against blood-borne pathogens. Notch2/RBP-J signaling regulates the development of MZB cells by interacting with delta-like 1 ligand, although the target genes for Notch2 signaling remain unclear. We identified Fos as an upregulated gene in LPS-stimulated B cells that received Notch2 signaling. Fos is expressed in CD21(high)CD23(low) MZB cells at a higher level compared to CD21(Int)CD23(high) follicular B cells. Deleting the Notch2 gene in CD19(+) B cells decreased Fos expression in B cells. Overexpression of Fos in Notch2-deficient B cells or bone marrow cells partially restored MZB development. Fos promoter activity was upregulated by Notch2 signaling, indicating that Notch2 directly controls Fos transcription associated with MZB development. These data identify Fos as one of the target genes for Notch2 signaling that is crucial for MZB development.
(キーワード): Animals / B-Lymphocytes / Gene Expression Regulation, Developmental / Genes, Reporter / Luciferases / Mice / Mice, Inbred C57BL / Oncogene Proteins v-fos / Promoter Regions, Genetic / Receptor, Notch2 / Spleen / Transcription, Genetic
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbrc.2012.01.082
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22293205; ● Summary page in Scopus @ Elsevier: 2-s2.0-84857441564

(DOI: 10.1016/j.bbrc.2012.01.082, PubMed: 22293205, Elsevier: Scopus) Masakazu Okamoto, Katsuyuki Takeda, J Joseph Lucas, Anthony Joetham, Koji Yasutomo and W Erwin Gelfand :
Low-dose lipopolysaccharide affects lung allergic responses by regulating Jagged1 expression on antigen-pulsed dendritic cells.,
International Archives of Allergy and Immunology, Vol.157, No.1, 65-72, 2011.

(要約): These data demonstrate that LPS regulates the expression of Jagged1 on BMDCs, which is essential for the full development of lung allergic responses.
(キーワード): Adoptive Transfer / Animals / Antigens / Asthma / Calcium-Binding Proteins / Dendritic Cells / Disease Models, Animal / Female / Intercellular Signaling Peptides and Proteins / Intracellular Signaling Peptides and Proteins / Ligands / Lipopolysaccharides / Male / Membrane Proteins / Mice / Mice, Inbred C57BL / Ovalbumin / Receptors, Notch
(出版サイトへのリンク): ● Publication site (DOI): 10.1159/000324836
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21912175; ● Search Scopus @ Elsevier (PMID): 21912175; ● Search Scopus @ Elsevier (DOI): 10.1159/000324836

(DOI: 10.1159/000324836, PubMed: 21912175) Akiko Kitamura, Yoichi Maekawa, Hisanori Uehara, Keisuke Izumi, Izumi Kawachi, Masatoyo Nishizawa, Yasuko Toyoshima, Hitoshi Takahashi, M Daron Standley, Keiji Tanaka, Jun Hamazaki, Shigeo Murata, Koji Obara, Itaru Toyoshima and Koji Yasutomo :
A mutation in the immunoproteasome subunit PSMB8 causes autoinflammation and lipodystrophy in humans.,
The Journal of Clinical Investigation, Vol.121, No.10, 4150-4160, 2011.

(要約): Proteasomes are multisubunit proteases that play a critical role in maintaining cellular function through the selective degradation of ubiquitinated proteins. When 3 additional subunits, expression of which is induced by IFN-, are substituted for their constitutively expressed counterparts, the structure is converted to an immunoproteasome. However, the underlying roles of immunoproteasomes in human diseases are poorly understood. Using exome analysis, we found a homozygous missense mutation (G197V) in immunoproteasome subunit, type 8 (PSMB8), which encodes one of the subunits induced by IFN- in patients from 2 consanguineous families. Patients bearing this mutation suffered from autoinflammatory responses that included recurrent fever and nodular erythema together with lipodystrophy. This mutation increased assembly intermediates of immunoproteasomes, resulting in decreased proteasome function and ubiquitin-coupled protein accumulation in the patient's tissues. In the patient's skin and B cells, IL-6 was highly expressed, and there was reduced expression of PSMB8. Downregulation of PSMB8 inhibited the differentiation of murine and human adipocytes in vitro, and injection of siRNA against Psmb8 in mouse skin reduced adipocyte tissue volume. These findings identify PSMB8 as an essential component and regulator not only of inflammation, but also of adipocyte differentiation, and indicate that immunoproteasomes have pleiotropic functions in maintaining the homeostasis of a variety of cell types.
(キーワード): Adipocytes / Amino Acid Sequence / Animals / Asian Continental Ancestry Group / Cell Differentiation / Consanguinity / Female / Homozygote / Humans / Inflammation / Lipodystrophy / Male / Mice / Models, Molecular / Molecular Sequence Data / Mutant Proteins / Mutation, Missense / Pedigree / Phenotype / Proteasome Endopeptidase Complex / RNA, Small Interfering / Sequence Homology, Amino Acid
(出版サイトへのリンク): ● Publication site (DOI): 10.1172/JCI58414
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21881205; ● Search Scopus @ Elsevier (PMID): 21881205; ● Search Scopus @ Elsevier (DOI): 10.1172/JCI58414

(DOI: 10.1172/JCI58414, PubMed: 21881205) Asuka Shiota, Yutaka Taketani, Yoichi Maekawa, Koji Yasutomo, Masataka Sata, Tohru Sakai, R. Mizuno, M. Isshiki, Hironori Yamamoto and Eiji Takeda :
High phosphate diet reduces atherosclerosis formation in apolipoprotein E-deficient mice.,
Journal of Clinical Biochemistry and Nutrition, Vol.49, No.2, 109-114, 2011.

(要約): Although higher serum phosphate level is a risk factor for cardiovascular diseases in general population as well as chronic kidney disease patients, it has not been clarified whether higher phosphate can affect atherosclerotic plaque formation. In this study, we investigated the effect of prolonged-intake of different concentrations of phosphate on atherosclerosis formation using apolipoprotein E-deficient mice. Apolipoprotein E-deficient mice were fed with high fat diet including 0.6%, 1.2% or 1.8% phosphate. After 20-week treatment, atherosclerotic plaque formation in aorta in 1.8% phosphate diet group was unexpectedly less than that in the other groups. To elucidate mechanisms of suppression of plaque formation by high phosphate diet, we hypothesized that high phosphate diet may modify a profile of monocytes/macrophages suppressing plaque formation. We confirmed that elevated peripheral monocytes (CD11b+, F4/80+ cell numbers) in apolipoprotein E-deficient mice were decreased by feeding with 1.8% P diet. In addition, ex vivo study indicated that high dose of phosphate induced macrophage apoptosis. These observations suggest that excess phosphate intake decreased atherosclerosis formation, at least in part, by changing the profile of peripheral monocytes or inducing apoptosis of macrophages in apolipoprotein E-deficient mice.
(出版サイトへのリンク): ● Publication site (DOI): 10.3164/jcbn.10-150
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21980226; ● Search Scopus @ Elsevier (PMID): 21980226; ● Search Scopus @ Elsevier (DOI): 10.3164/jcbn.10-150

(DOI: 10.3164/jcbn.10-150, PubMed: 21980226) Tomomi Kuwahara, Yositoshi Ogura, Kenshiro Oshima, Ken Kurokawa, Tadasuke Ooka, Hideki Hirakawa, Takehiko Itoh, Haruyuki Nakayama-Imaohji, Minoru Ichimura, Kikuji Itoh, Chieko Ishifune, Yoichi Maekawa, Koji Yasutomo, Masahira Hattori and Tetsuya Hayashi :
The lifestyle of the segmented filamentous bacterium: a non-culturable gut-associated immunostimulating microbe inferred by whole-genome sequencing.,
DNA Research, Vol.18, No.4, 291-303, 2011.

(要約): Numerous microbes inhabit the mammalian intestinal track and strongly impact host physiology; however, our understanding of this ecosystem remains limited owing to the high complexity of the microbial community and the presence of numerous non-culturable microbes. Segmented filamentous bacteria (SFBs), which are clostridia-related Gram-positive bacteria, are among such non-culturable populations and are well known for their unique morphology and tight attachment to intestinal epithelial cells. Recent studies have revealed that SFBs play crucial roles in the post-natal maturation of gut immune function, especially the induction of Th17 lymphocytes. Here, we report the complete genome sequence of mouse SFBs. The genome, which comprises a single circular chromosome of 1 620 005 bp, lacks genes for the biosynthesis of almost all amino acids, vitamins/cofactors and nucleotides, but contains a full set of genes for sporulation/germination and, unexpectedly, for chemotaxis/flagella-based motility. These findings suggest a triphasic lifestyle of the SFB, which comprises two types of vegetative (swimming and epicellular parasitic) phases and a dormant (spore) phase. Furthermore, SFBs encode four types of flagellin, three of which are recognized by Toll-like receptor 5 and could elicit the innate immune response. Our results reveal the non-culturability, lifestyle and immunostimulation mechanisms of SFBs and provide a genetic basis for the future development of the SFB cultivation and gene-manipulation techniques.
(キーワード): Animals / Bacteria / Biosynthetic Pathways / Chemotaxis / Chromosomes, Bacterial / Flagella / Flagellin / Gene Order / Genome, Bacterial / Humans / Intestines / Male / Mice / Mice, Inbred BALB C / Phylogeny / Sequence Analysis, DNA / Spores
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/dnares/dsr022
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21791478; ● Search Scopus @ Elsevier (PMID): 21791478; ● Search Scopus @ Elsevier (DOI): 10.1093/dnares/dsr022

(DOI: 10.1093/dnares/dsr022, PubMed: 21791478) Mingli Xu, Noriko Morishima, Izuru Mizoguchi, Yukino Chiba, Koji Fujita, Masahiko Kuroda, Yoichiro Iwakura, J Daniel Cua, Koji Yasutomo, Junichiro Mizuguchi and Takayuki Yoshimoto :
Regulation of the development of acute hepatitis by IL-23 through IL-22 and IL-17 production.,
European Journal of Immunology, Vol.41, No.10, 2828-2839, 2011.

(要約): IL-23 plays a critical role in the expansion of highly proinflammatory Th17 cells secreting IL-17 and IL-22. Recently, we demonstrated that Notch signaling drives IL-22 secretion through the aryl hydrocarbon receptor (AHR) and plays a protective role in Con A-induced hepatitis. In this study, we investigated the role of IL-23 in hepatitis using IL-23p19- and IL-17-deficient mice. In WT mice, the injection of Con A induced the upregulation of various cytokines which included IL-23, IL-22, IL-17, IFN- and TNF-. In IL-23p19-deficient mice, exacerbated hepatitis was observed and serum IL-22 and IL-17 levels were greatly reduced, whereas in IL-17-deficient mice, ameliorated hepatitis was observed. The injection of exogenous IL-22 protected p19-deficient mice from hepatitis, whereas the injection of exogenous IL-23 significantly increased the serum levels of not only IL-22 but also IL-17, and less effectively protected against hepatitis in IL-17-dependent and -independent manners. Finally, it was revealed that STAT3, STAT4 and Notch contributed to the production of both cytokines, and that the AHR was important only for IL-22 production in response to Con A and IL-23 in liver mononuclear cells. These results suggest that IL-23 plays a protective role in hepatitis through IL-22 production and also a pathological role via IL-17-dependent and -independent mechanisms.
(キーワード): Animals / Concanavalin A / Cytokines / Hepatitis, Animal / Interleukin-17 / Interleukin-23 / Interleukin-23 Subunit p19 / Interleukins / Mice / Mice, Inbred C57BL / ノックアウトマウス (knockout mice) / Receptors, Aryl Hydrocarbon / Receptors, Notch / Reverse Transcriptase Polymerase Chain Reaction / STAT3 Transcription Factor / STAT4 Transcription Factor / シグナル伝達 (signal transduction) / Th17 Cells
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/eji.201141291
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21953641; ● Search Scopus @ Elsevier (PMID): 21953641; ● Search Scopus @ Elsevier (DOI): 10.1002/eji.201141291

(DOI: 10.1002/eji.201141291, PubMed: 21953641) Chieko Ishifune, Yoichi Maekawa, Jun Nishida, Akiko Kitamura, Tanigaki Kenji, Yagita Hideo and Koji Yasutomo :
Notch signaling regulates the development of a novel type of Thy1-expressing dendritic cell in the thymus.,
European Journal of Immunology, Vol.41, No.5, 1309-1320, 2011.

(要約): Dendritic cells (DCs) are specialized antigen-presenting cells (APCs) required for T-cell activation and are classified into several subtypes by phenotypic and functional characteristics. However, it remains unclear if distinct transcription factors control the development of each DC subpopulation. In this report, we demonstrate that Notch signaling controls the development of a novel DC subtype that expresses Thy1 (Thy1(+) DCs). Overstimulation of bone marrow cells with the Notch ligand Delta-like 1 promoted the development of Thy1(+) DCs. Thy1(+) DCs are characterized as CD11c(+) MHC class II(+) NK1.1(-) B220(-) CD8(+) , and are present in the thymus but not in the spleen and lymph nodes. Thymic Thy1(+) DCs are able to capture exogenous proteins and delete CD4(+) CD8(+) T cells. Transplantation experiments demonstrated that CD44(+) CD25(-) and CD44(+) CD25(+) thymocytes can differentiate into Thy1(+) DCs. Recombination signal binding protein for immunoglobulin kappa J region (RBP-J) deficiency in lineage-negative bone marrow cells, but not CD11c(+) cells, disrupted Thy1(+) DC development in the thymus. Our data indicate that Notch signaling controls the development of a novel type of Thy1-expressing DC in the thymus that possibly controls negative selection, and indicates that there may be highly regulated, differential transcriptional control of DC development. Furthermore, our findings suggest that Notch signaling regulates T-cell development not only by intrinsically inducing T-cell lineage-specific gene programs, but also by regulating negative selection through Thy1(+) DCs.
(キーワード): Animals / Antigen Presentation / Antigens, CD11c / Antigens, CD44 / Antigens, Thy-1 / Blotting, Western / Bone Marrow Cells / Cell Differentiation / Dendritic Cells / Flow Cytometry / Immunoglobulin J Recombination Signal Sequence-Binding Protein / Interleukin-2 Receptor alpha Subunit / Lymphocyte Activation / Membrane Proteins / Mice / Mice, Inbred C57BL / Mice, Transgenic / Polymerase Chain Reaction / Receptors, Notch / Signal Transduction / T-Lymphocytes / Thymus Gland
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/eji.201041159
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21469122; ● Search Scopus @ Elsevier (PMID): 21469122; ● Search Scopus @ Elsevier (DOI): 10.1002/eji.201041159

(DOI: 10.1002/eji.201041159, PubMed: 21469122) Mamiko Sakata-Yanagimoto, Toru Sakai, Yasuyuki Miyake, Toshiki I. Saito, Haruhiko Maruyama, Yasuyuki Morishita, Etsuko Nakagami-Yamaguchi, Keiki Kumano, Hideo Yagita, Masashi Fukayama, Seishi Ogawa, Mineo Kurokawa, Koji Yasutomo and Shigeru Chiba :
Notch2 signaling is required for proper mast cell distribution and mucosal immunity in the intestine.,
Blood, Vol.117, No.1, 128-134, 2010.

(要約): Notch receptor-mediated signaling is involved in the developmental process and functional modulation of lymphocytes, as well as in mast cell differentiation. Here, we investigated whether Notch signaling is required for antipathogen host defense regulated by mast cells. Mast cells were rarely found in the small intestine of wild-type C57BL/6 mice but accumulated abnormally in the lamina propria of the small-intestinal mucosa of the Notch2-conditional knockout mice in naive status. When transplanted into mast cell-deficient W(sh)/W(sh) mice, Notch2-null bone marrow-derived mast cells were rarely found within the epithelial layer but abnormally localized to the lamina propria, whereas control bone marrow-derived mast cells were mainly found within the epithelial layer. After the infection of Notch2 knockout and control mice with L3 larvae of Strongyloides venezuelensis, the abundant number of mast cells was rapidly mobilized to the epithelial layer in the control mice. In contrast, mast cells were massively accumulated in the lamina propria of the small intestinal mucosa in Notch2-conditional knockout mice, accompanied by impaired eradication of Strongyloides venezuelensis. These findings indicate that cell-autonomous Notch2 signaling in mast cells is required for proper localization of intestinal mast cells and further imply a critical role of Notch signaling in the host-pathogen interface in the small intestine.
(キーワード): Animals / Basement Membrane / Bone Marrow / Bone Marrow Transplantation / Cell Movement / Cells, Cultured / Female / Integrases / Intestinal Mucosa / Intestine, Small / Male / Mast Cells / Mice / Mice, Inbred C57BL / Mice, Knockout / Mice, Transgenic / Receptor, Notch2 / Strongyloides / Strongyloidiasis
(出版サイトへのリンク): ● Publication site (DOI): 10.1182/blood-2010-07-289611
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 20971948; ● Search Scopus @ Elsevier (PMID): 20971948; ● Search Scopus @ Elsevier (DOI): 10.1182/blood-2010-07-289611

(DOI: 10.1182/blood-2010-07-289611, PubMed: 20971948) Muhammad Shamsul Alam, Yoichi Maekawa, Akiko Kitamura, Kenji Tanigaki, Takayuki Yoshimoto, Kenji Kishihara and Koji Yasutomo :
Notch signaling drives IL-22 secretion in CD4+ T cells by stimulating the aryl hydrocarbon receptor.,
Proceedings of the National Academy of Sciences of the United States of America, Vol.107, No.13, 5943-5948, 2010.

(要約): CD4(+) helper T (Th) cells differentiate toward distinct effector cell lineages characterized by their distinct cytokine expression patterns and functions. Multiple Th cell populations secrete IL-22 that contributes to both protective and pathological inflammatory responses. Although the differentiation of IL-22-producing Th cells is controlled by the aryl hydrocarbon receptor (AhR), little is known about the regulatory mechanisms inducing physiological stimulators for AhR. Here, we show that Notch signaling enhances IL-22 production by CD4(+) T cells by a mechanism involving AhR stimulation. Notch-mediated stimulation of CD4(+) T cells increased the production of IL-22 even in the absence of STAT3. CD4(+) T cells from RBP-J-deficient mice had little ability to produce IL-22 through T cell receptor-mediated stimulation. RBP-J-deficient mice were highly susceptible to the detrimental immunopathology associated with ConA-induced hepatitis with little IL-22 production by CD4(+) T cells. Exogenous IL-22 protected RBP-J-deficient mice from ConA-induced hepatitis. Notch signaling promoted production of endogenous stimulators for AhR, which further augmented IL-22 secretion. Our studies identify a Notch-AhR axis that regulates IL-22 expression and fine-tunes immune system control of inflammatory responses.
(キーワード): Animals / CD4-Positive T-Lymphocytes / Cell Differentiation / Female / Hepatitis, Animal / Immunoglobulin J Recombination Signal Sequence-Binding Protein / Interleukins / Mice / Mice, Inbred C57BL / Mice, Knockout / Mice, Transgenic / Protein Structure, Tertiary / Receptors, Aryl Hydrocarbon / Receptors, Notch / Recombinant Proteins / STAT3 Transcription Factor / Signal Transduction
(出版サイトへのリンク): ● Publication site (DOI): 10.1073/pnas.0911755107
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 20231432; ● Search Scopus @ Elsevier (PMID): 20231432; ● Search Scopus @ Elsevier (DOI): 10.1073/pnas.0911755107

(DOI: 10.1073/pnas.0911755107, PubMed: 20231432) Reiko Nakao, Katsuya Hirasaka, Jumpei Goto, Kazumi Ishidoh, Chiharu Yamada, Ayako Ohno, Yuushi Okumura, Ikuya Nonaka, Koji Yasutomo, KM Baldwin, Eiki Kominami, Akira Higashibata, Keisuke Nagano, Keiji Tanaka, Natsuo Yasui, EM Mills, Shinichi Takeda and Takeshi Nikawa :
Ubiquitin ligase Cbl-b is a negative regulator for insulin-like growth factor 1 signaling during muscle atrophy caused by unloading.,
Molecular and Cellular Biology, Vol.29, No.17, 4798-4811, 2009.

(要約): Skeletal muscle atrophy caused by unloading is characterized by both decreased responsiveness to myogenic growth factors (e.g., insulin-like growth factor 1 [IGF-1] and insulin) and increased proteolysis. Here, we show that unloading stress resulted in skeletal muscle atrophy through the induction and activation of the ubiquitin ligase Cbl-b. Upon induction, Cbl-b interacted with and degraded the IGF-1 signaling intermediate IRS-1. In turn, the loss of IRS-1 activated the FOXO3-dependent induction of atrogin-1/MAFbx, a dominant mediator of proteolysis in atrophic muscle. Cbl-b-deficient mice were resistant to unloading-induced atrophy and the loss of muscle function. Furthermore, a pentapeptide mimetic of tyrosine(608)-phosphorylated IRS-1 inhibited Cbl-b-mediated IRS-1 ubiquitination and strongly decreased the Cbl-b-mediated induction of atrogin-1/MAFbx. Our results indicate that the Cbl-b-dependent destruction of IRS-1 is a critical dual mediator of both increased protein degradation and reduced protein synthesis observed in unloading-induced muscle atrophy. The inhibition of Cbl-b-mediated ubiquitination may be a new therapeutic strategy for unloading-mediated muscle atrophy.
(キーワード): Adaptor Proteins, Signal Transducing / Amino Acid Sequence / Animals / Cell Line / Forkhead Transcription Factors / Hindlimb Suspension / Humans / Insulin Receptor Substrate Proteins / Insulin-Like Growth Factor I / Male / Mice / Mice, Inbred C57BL / Mice, Knockout / Molecular Sequence Data / Muscle Proteins / Muscle, Skeletal / Muscular Atrophy / Oligopeptides / Proto-Oncogene Proteins c-cbl / Rats / Rats, Sprague-Dawley / SKP Cullin F-Box Protein Ligases / Signal Transduction / Space Flight / Ubiquitin
(出版サイトへのリンク): ● Publication site (DOI): 10.1128/MCB.01347-08
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 19546233; ● Search Scopus @ Elsevier (PMID): 19546233; ● Search Scopus @ Elsevier (DOI): 10.1128/MCB.01347-08

(DOI: 10.1128/MCB.01347-08, PubMed: 19546233) Masakazu Okamoto, Hiroyuki Matsuda, Anthony Joetham, Joseph J. Lucas, Joanne Domenico, Koji Yasutomo, Katsuyuki Takeda and Erwin W. Gelfand :
Jagged1 on dendritic cells and Notch on CD4+ T cells initiate lung allergic responsiveness by inducing IL-4 production.,
The Journal of Immunology, Vol.183, No.5, 2995-3003, 2009.

(要約): Jagged1, a Notch ligand, and Notch have been implicated in Th2 differentiation, but their role in initiating IL-4 production and Th2 differentiation in vivo and the development of allergic airway responses has not been defined. In this study, we show that Jagged1 is up-regulated on bone marrow-derived dendritic cells (BMDCs) pulsed with allergen and that the transfer of these BMDCs before allergen challenge induces airway hyperresponsiveness (AHR) and eosinophilic airway inflammation. Treatment of CD4(+) T cells with a gamma-secretase inhibitor (GSI), which inhibits Notch signaling, resulted in decreased cytokine production when the cells were cocultured with allergen-pulsed, Jagged1-expressing BMDCs and, after the transfer of allergen-pulsed BMDCs, IL-4-deficient (IL-4(-/-)) recipients of GSI-treated naive CD4(+) T cells developed lower levels of AHR, reduced numbers of eosinophils, and lower Th2 cytokine levels when challenged with allergen. In vivo treatment of wild-type mice with Jagged1-Fc enhanced AHR and airway inflammation, whereas the transfer of BMDC transfected with Jagged1 small interfering RNA (siRNA) cells into WT or IL-4(-/-) mice before transfer of CD4(+) T cells resulted in decreased AHR, inflammation, and Th2 cytokines, indicating the critical role for Jagged1 expression on APCs. These data identify the essential role of the interactions between Notch on CD4(+) T cells and Jagged1 on APCs in the initiation of IL-4 production and Th2 differentiation for the development of AHR and allergic airway inflammation.
(キーワード): Animals / Bronchial Hyperreactivity / CD4-Positive T-Lymphocytes / Calcium-Binding Proteins / Cells, Cultured / Coculture Techniques / Dendritic Cells / Eosinophilia / Female / Inflammation Mediators / Intercellular Signaling Peptides and Proteins / Interleukin-4 / Lung / Male / Membrane Proteins / Mice / Mice, Inbred C57BL / Mice, Knockout / Ovalbumin / Receptors, Notch / Th2 Cells
(出版サイトへのリンク): ● Publication site (DOI): 10.4049/jimmunol.0900692
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 19667086; ● Search Scopus @ Elsevier (PMID): 19667086; ● Search Scopus @ Elsevier (DOI): 10.4049/jimmunol.0900692

(DOI: 10.4049/jimmunol.0900692, PubMed: 19667086) Kyoko Haraguchi, Takahiro Suzuki, Noriko Koyama, Keiki Kumano, Fumio Nakahara, Akihiko Matsumoto, Yasuhisa Yokoyama, Mamiko Sakata-Yanagimoto, Shigeo Masuda, Tsuyoshi Takahashi, Aki Kamijo, Koki Takahashi, Minoko Takanashi, Yoshiki Okuyama, Koji Yasutomo, Seiji Sakano, Hideo Yagita, Mineo Kurokawa, Seishi Ogawa and Shigeru Chiba :
Notch activation induces the generation of functional NK cells from human cord blood CD34-positive cells devoid of IL-15.,
The Journal of Immunology, Vol.182, No.10, 6168-6178, 2009.

(要約): The development of NK cells from hematopoietic stem cells is thought to be dependent on IL-15. In this study, we demonstrate that stimulation of human cord blood CD34(+) cells by a Notch ligand, Delta4, along with IL-7, stem cell factor, and Fms-like tyrosine kinase 3 ligand, but no IL-15, in a stroma-free culture induced the generation of cells with characteristics of functional NK cells, including CD56 and CD161 Ag expression, IFN-gamma secretion, and cytotoxic activity against K562 and Jurkat cells. Addition of gamma-secretase inhibitor and anti-human Notch1 Ab to the culture medium almost completely blocked NK cell emergence. Addition of anti-human IL-15-neutralizing Ab did not affect NK cell development in these culture conditions. The presence of IL-15, however, augmented cytotoxicity and was required for a more mature NK cell phenotype. CD56(+) cells generated by culture with IL-15, but without Notch stimulation, were negative for CD7 and cytoplasmic CD3, whereas CD56(+) cells generated by culture with both Delta4 and IL-15 were CD7(+) and cytoplasmic CD3(+) from the beginning and therefore more similar to in vivo human NK cell progenitors. Together, these results suggest that Notch signaling is important for the physiologic development of NK cells at differentiation stages beyond those previously postulated.
(キーワード): Antigens, CD34 / Cell Differentiation / Fetal Blood / Flow Cytometry / Fluorescent Antibody Technique / Hematopoietic Stem Cells / Humans / Interleukin-15 / Killer Cells, Natural / Lymphocyte Subsets / Receptors, Notch / Signal Transduction
(出版サイトへのリンク): ● Publication site (DOI): 10.4049/jimmunol.0803036
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 19414770; ● Search Scopus @ Elsevier (PMID): 19414770; ● Search Scopus @ Elsevier (DOI): 10.4049/jimmunol.0803036

(DOI: 10.4049/jimmunol.0803036, PubMed: 19414770) Kazumasa Nishimoto, Yuta Kochi, Katsunori Ikari, Kazuhiko Yamamoto, Akari Suzuki, Kenichi Shimane, Yusuke Nakamura, Koichiro Yano, Noriko Iikuni, So Tsukahara, Naoyuki Kamatani, Hiroshi Okamoto, Hirotaka Kaneko, Yasushi Kawaguchi, Masako Hara, Yoshiaki Toyama, Takahiko Horiuchi, Kayoko Tao, Koji Yasutomo, Daisuke Hamada, Natsuo Yasui, Hiroshi Inoue, Mitsuo Itakura, Hisashi Yamanaka and Shigeki Momohara :
Association study of TRAF1-C5 polymorphisms with susceptibility to rheumatoid arthritis and systemic lupus erythematosus in Japanese.,
Annals of the Rheumatic Diseases, Vol.69, No.2, 368-373, 2009.

(要約): The primary aim of this study was to investigate the association of polymorphisms of TRAF1-C5, a newly identified rheumatoid arthritis (RA) risk locus in Caucasians, with susceptibility to RA and systemic lupus erythematosus (SLE) in Japanese populations. Gene expression levels of TRAF1 and C5 to assess the functional significance of genotypes were also analysed. A multicentre association study consisting of 4 RA case-control series (4397 cases and 2857 controls) and 3 SLE case-control series (591 cases and 2199 shared controls) was conducted. Genotyping was performed using TaqMan genotyping assay for two single nucleotide polymorphisms (SNPs) that showed the best evidence of association in the previous Caucasian studies. Quantifications of TRAF1 and C5 expression were performed with TaqMan expression assay. Significant differences in allele frequency for both SNPs were observed between RA and control subjects (combined odds ratio = 1.09), while no significant difference was detected between patients with SLE and controls. Interestingly, alleles rs3761847 A and rs10818488 G had increased the risk for RA in the present study, while they decreased the risk in the original studies. A significant difference was found between risk allele carriers and non-carriers of rs10818488 for the expression level of TRAF1 in phorbol myristate acetate-stimulated lymphoblastoid cell lines (p = 0.04). Association of TRAF1-C5 locus with RA susceptibility was detected in the Japanese populations with modest magnitude, while no significant association was observed for SLE. Significant positive effect of genotype on the expression of TRAF1 might support the genetic association between TRAF1 and RA.
(キーワード): Arthritis, Rheumatoid / Asian Continental Ancestry Group / Autoantibodies / Case-Control Studies / Cell Line / Complement C5 / Female / Genetic Predisposition to Disease / Genome-Wide Association Study / Genotype / Hand Joints / Humans / Lupus Erythematosus, Systemic / Male / Middle Aged / Polymorphism, Single Nucleotide / TNF Receptor-Associated Factor 1
(出版サイトへのリンク): ● Publication site (DOI): 10.1136/ard.2008.104315
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 19336421; ● Search Scopus @ Elsevier (PMID): 19336421; ● Search Scopus @ Elsevier (DOI): 10.1136/ard.2008.104315

(DOI: 10.1136/ard.2008.104315, PubMed: 19336421) Yoichi Maekawa, Yoshiaki Minato, Chieko Ishifune, Takeshi Kurihara, Akiko Kitamura, Hidefumi Kojima, Hideo Yagita, Mamiko Sakata-Yanagimoto, Toshiki Saito, Ichiro Taniuchi, Shigeru Chiba, Saburo Sone and Koji Yasutomo :
Notch2 integrates signaling by the transcription factors RBP-J and CREB1 to promote T cell cytotoxicity.,
Nature Immunology, Vol.9, No.10, 1140-1147, 2008.

(要約): The acquisition of cytotoxic effector function by CD8(+) T cells is crucial for the control of intracellular infection and tumor invasion. However, it remains unclear which signaling pathways are required for the differentiation of CD8(+) cytotoxic T lymphocytes. We show here that Notch2-deficient T cells had impaired differentiation into cytotoxic T lymphocytes. In addition, dendritic cells with lower expression of the Notch ligand Delta-like 1 induced the differentiation of cytotoxic T lymphocytes less efficiently. We found that the intracellular domain of Notch2 interacted with a phosphorylated form of the transcription factor CREB1, and together these proteins bound the transcriptional coactivator p300 to form a complex on the promoter of the gene encoding granzyme B. Our results suggest that the highly regulated, dynamic control of T cell cytotoxicity depends on the integration of Notch2 and CREB1 signals.
(キーワード): Animals / Basic Helix-Loop-Helix Leucine Zipper Transcription Factors / 細胞分化 (cell differentiation) / Cyclic AMP Response Element-Binding Protein / Dendritic Cells / Female / Gene Expression Regulation / Granzymes / Immunoglobulin J Recombination Signal Sequence-Binding Protein / Lymphocyte Activation / Mice / Mice, Inbred C57BL / Polymerase Chain Reaction / Promoter Regions, Genetic / Receptor, Notch2 / シグナル伝達 (signal transduction) / T-Lymphocytes, Cytotoxic / Transcription, Genetic / p300-CBP Transcription Factors
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/ni.1649
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18724371; ● Search Scopus @ Elsevier (PMID): 18724371; ● Search Scopus @ Elsevier (DOI): 10.1038/ni.1649

(DOI: 10.1038/ni.1649, PubMed: 18724371) Shu Kobayashi, Katsunori Ikari, Hirotaka Kaneko, Yuta Kochi, Kazuhiko Yamamoto, Kenichi Shimane, Yusuke Nakamura, Yoshiaki Toyama, Takeshi Mochizuki, So Tsukahara, Yasushi Kawaguchi, Chihiro Terai, Masako Hara, Taisuke Tomatsu, Hisashi Yamanaka, Takahiko Horiuchi, Kayoko Tao, Koji Yasutomo, Daisuke Hamada, Natsuo Yasui, Hiroshi Inoue, Mitsuo Itakura, Hiroshi Okamoto, Naoyuki Kamatani and Shigeki Momohara :
Association of STAT4 with susceptibility to rheumatoid arthritis and systemic lupus erythematosus in the Japanese population.,
Arthritis and Rheumatism, Vol.58, No.7, 1940-1946, 2008.

(要約): OBJECTIVE: STAT4 encodes a transcriptional factor that transmits signals induced by several key cytokines, and it might be a key molecule in the development of autoimmune diseases. Recently, a STAT4 haplotype was reported to be associated with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) in Caucasian populations. This was replicated in a Korean RA population. Interestingly, the degree of risk of RA susceptibility with the STAT4 haplotype was similar in the Caucasian and Korean populations. The present study was undertaken to investigate the effect of STAT4 on susceptibility to RA and SLE in the Japanese. METHODS: We performed an association study using 3 independent Japanese RA case-control populations (total 3,567 cases and 2,199 controls) and 3 independent Japanese SLE populations (total 591 cases). All samples were genotyped using the TaqMan fluorogenic 5' nuclease assay for single-nucleotide polymorphism (SNP) rs7574865, which tags the susceptibility haplotype. The association of the SNP with disease susceptibility in each case-control study was calculated using Fisher's exact test, and the results were combined, using the Mantel-Haenszel method, to obtain combined odds ratios (ORs). RESULTS: We observed a significant association of the STAT4 polymorphism with susceptibility to both RA and SLE. The combined ORs for RA and SLE, respectively, were 1.27 (P = 8.4 x 10(-9)) and 1.61 (P = 2.1 x 10(-11)) for allele frequency distribution; these ORs were quite similar to those previously observed in the Caucasian population. CONCLUSION: We conclude that STAT4 is associated with RA and SLE in the Japanese. Our results indicate that STAT4 is a common genetic risk factor for autoimmune diseases, with similar strength across major racial groups.
(キーワード): Aged / Arthritis, Rheumatoid / Case-Control Studies / Female / Genetic Predisposition to Disease / Haplotypes / Humans / Japan / Lupus Erythematosus, Systemic / Male / Middle Aged / Polymorphism, Single Nucleotide / Risk Factors / STAT4 Transcription Factor
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/art.23494
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18576330; ● Search Scopus @ Elsevier (PMID): 18576330; ● Search Scopus @ Elsevier (DOI): 10.1002/art.23494

(DOI: 10.1002/art.23494, PubMed: 18576330) Mika Kijima, Takeshi Yamaguchi, Chieko Ishifune, Yoichi Maekawa, Akemi Koyanagi, HIdeo Yagita, Shigeru Chiba, Kenji Kishihara, Mitsuo Shimada and Koji Yasutomo :
Dendritic cell-mediated NK cell activation is controlled by Jagged2-Notch interaction.,
Proceedings of the National Academy of Sciences of the United States of America, Vol.105, No.19, 7010-7015, 2008.

(要約): Natural killer (NK) cells regulate various immune responses by exerting cytotoxic activity or secreting cytokines. The interaction of NK cells with dendritic cells (DC) contributes to NK cell-mediated antitumor or antimicrobial responses. However, the cellular and molecular mechanisms for controlling this interaction are largely unknown. Here, we show an involvement of Jagged2-Notch interaction in augmenting NK cell cytotoxicity mediated by DC. Enforced expression of Jagged2 on A20 cells (Jag2-A20 cells) suppressed their growth in vivo, which was abrogated by depleting NK cells. Moreover, Jag2-A20 cells exerted a suppression on the growth of nonmanipulated A20 cells in SCID mice in an NK-dependent manner. Consistently, coinoculation of A20 cells with DC overexpressing Jagged2 (Jag2-DC) suppressed the growth of A20 cells in mice. Stimulation of NK cells with Jagged2 directly enhanced their cytotoxicity, IFN-gamma production, and proliferation. Ligation of Notch2 on NK cells enhanced their cytotoxic activity, and Jag2-DC or CpG-treated DC-mediated NK cell cytotoxicity was suppressed by a gamma-secretase inhibitor. These results indicate that the Jagged2-Notch axis plays a crucial role in DC-mediated NK cell cytotoxicity. Furthermore, manipulation of this interaction may provide an approach to induce potent tumor immunity or to inhibit certain autoimmune diseases caused by NK cell activation.
(キーワード): Animals / Cell Proliferation / Cell Transplantation / Cytotoxicity, Immunologic / Dendritic Cells / Immunotherapy, Adoptive / Killer Cells, Natural / Lymphocyte Activation / Membrane Proteins / Mice / Mice, Inbred BALB C / Mice, SCID / Neoplasms / Protein Binding / Receptors, Notch / シグナル伝達 (signal transduction)
(出版サイトへのリンク): ● Publication site (DOI): 10.1073/pnas.0709919105
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18458347; ● Search Scopus @ Elsevier (PMID): 18458347; ● Search Scopus @ Elsevier (DOI): 10.1073/pnas.0709919105

(DOI: 10.1073/pnas.0709919105, PubMed: 18458347) Hiroyuki Kose, Tohru Sakai, Shin-ichi Tsukumo, Kaichun Wei, Takahisa Yamada, Koji Yasutomo and Kozo Matsumoto :
Maturational arrest of thymocyte development is caused by a deletion in the receptor-like protein tyrosine phosphatase κ gene in LEC rats,
Genomics, Vol.89, No.6, 673-677, 2007.

(要約): The Long-Evans Cinnamon (LEC) rat has a spontaneous mutation, T helper immunodeficiency (thid), which causes a markedly reduced CD4(+) thymocyte population. Here we positionally clone the locus and identify a deletion in the gene encoding a receptor-like protein tyrosine phosphatase kappa (Ptprk) that led to complete loss of the transcript. The rat Ptprk gene exhibits 98% identity with the human and mouse counterparts and is expressed most abundantly in the CD4(-)CD8(-) double-negative stage. The downregulation of Ptprk in mouse immature thymocytes by RNA interference mimicked the thid phenotype. These results indicate that thid maps to the Ptprk locus and that functional Ptprk is crucial for lineage commitment or progression of CD4(+) T cells. We also found that Ptprk appears to function in parallel with or downstream of Th-POK/cKrox (also known as ZBTB7B), a master regulator of T cell lineage decision.
(キーワード): T cell differentiation / Protein phosphatase / LEC rat / Thymus / Th-POK/cKrox
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.ygeno.2007.03.001
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 17434290; ● Search Scopus @ Elsevier (PMID): 17434290; ● Search Scopus @ Elsevier (DOI): 10.1016/j.ygeno.2007.03.001

(DOI: 10.1016/j.ygeno.2007.03.001, PubMed: 17434290) Yoko Mizuha, Hironori Yamamoto, Tadatoshi Sato, Mitsuyoshi Tsuji, Masashi Masuda, Masayuki Uchida, Kentaro Sakai, Yutaka Taketani, Koji Yasutomo, Hajime Sasaki and Eiji Takeda :
Water extract of Cordyceps sinensis (WECS) inhibits the RANKL-induced osteoclast differentiation.,
BioFactors, Vol.30, No.2, 105-116, 2007.

(要約): It has been reported that Cordyceps sinensis, a traditional Chinese medicine, has various pharmacological effects. The aim of this study was to clarify the effect of water extract of Cordyceps sinensis (WECS) on osteoclast differentiation in vitro. In mouse bone marrow cells and monocyte/macrophage cell line RAW264.7, WECS dose-dependently inhibited the receptor activator of nuclear factor kappa B (NF-kappaB) ligand (RANKL)-induced osteoclast differentiation by tartrate-resistant acid phosphatase (TRAP) staining. In fact, cytotoxic effect was not observed in the RAW264.7 cells treated with WECS. Moreover, the mRNA expression of osteoclast related genes (calcitonin receptor, cathepsin K, matrix metalloprotease 9 and nuclear factor of activated T cells c1) was also inhibited by WECS. Investigation of inhibitory mechanism by using electrophoretic mobility shift assay (EMSA) and Western blot analysis revealed that WECS inhibited the activation of NF-kappaB through the prevention of IkappaBalpha phosphorylation. In conclusion, the present results demonstrate for the first time that WECS is a potent inhibitor of the RANKL-induced osteoclast differentiation through a mechanism involving the NF-kappaB pathway.
(キーワード): Animals / Bone Marrow Cells / Cathepsins / Cell Differentiation / Cells, Cultured / Cordyceps / Gene Expression / Macrophages / Male / Matrix Metalloproteinase 9 / Mice / Mice, Inbred C57BL / Monocytes / NF-kappa B / NFATC Transcription Factors / Osteoclasts / RANK Ligand / Receptors, Calcitonin
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18356582; ● Search Scopus @ Elsevier (PMID): 18356582

(PubMed: 18356582) Shin-ichi Tsukumo, Kayo Hirose, Yoichi Maekawa, Kenji Kishihara and Koji Yasutomo :
Lunatic fringe controls T cell differentiation through modulating Notch signaling.,
The Journal of Immunology, Vol.177, No.12, 8365-8371, 2006.

(要約): T cells differentiate from bone marrow-derived stem cells by expressing developmental stage-specific genes. We here searched arrays of genes that are highly expressed in mature CD4-CD8+ (CD8 single-positive (SP)) T cells but little in CD4+CD8+ (double-positive (DP)) cells by cDNA subtraction. Lunatic fringe (Lfng), a modulator of Notch signaling, was identified to be little expressed in DP cells and highly expressed in CD8SP T cell as well as in CD4-CD8- (double-negative (DN)) and mature CD4+CD8- (CD4SP) T cells. Thus, we examined whether such change of expression of Lfng plays a role in T cell development. We found that overexpression of Lfng in Jurkat T cells strengthened Notch signaling by reporter gene assay, indicating that Lfng is a positive regulator for Notch signaling in T cells. The enforced expression of Lfng in thymocytes enhanced the development of immature CD8SP cells but decreased mature CD4SP and CD8SP cells. In contrast, the down-regulation of Lfng in thymocytes suppressed DP cells development due to the defective transition from CD44+CD25- stage to subsequent stage in DN cells. The overexpression of Lfng in fetal liver-derived hemopoietic stem cells enhanced T cell development, whereas its down-regulation suppressed it. These results suggested that the physiological high expression of Lfng in DN cells contributes to enhance T cell differentiation through strengthening Notch signaling. Shutting down the expression of Lfng in DP cells may have a physiological role in promoting DP cells differentiation toward mature SP cells.
(キーワード): Animals / Antigens, CD4 / Antigens, CD8 / 細胞分化 (cell differentiation) / Gene Expression Regulation / Glycosyltransferases / Humans / Jurkat Cells / Mice / Mice, Inbred C57BL / Receptors, Notch / シグナル伝達 (signal transduction) / Tリンパ球 (T lymphocytes) / Thymus Gland
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 17142733; ● Search Scopus @ Elsevier (PMID): 17142733

(PubMed: 17142733) Tetsuya Ikemoto, Takeshi Yamaguchi, Yuji Morine, Satoru Imura, Yuji Soejima, Masahiko Fujii, Yoichi Maekawa, Koji Yasutomo and Mitsuo Shimada :
Clinical roles of increased populations of Foxp3+CD4+ T cells in peripheral blood from advanced pancreatic cancer patients.,
Pancreas, Vol.33, No.4, 386-390, 2006.

(要約): Further metastasis should be avoided in pancreatic cancer (PC) patients for effective surgical treatment. Regulatory T cells (Foxp3CD4 T cells including CD4CD25 T cells and CD4CD25 T cells) play important roles in tumor immunity. This study aimed to investigate whether regulatory T cells participate in metastasis. Peripheral blood was withdrawn from PC patients, as well as healthy volunteer donors as controls. The peripheral blood mononuclear cells (PBMCs) were subjected to FACScan analysis after labeling with anti-CD4, anti-CD25, and anti-Foxp3 antibodies. Tumor markers, including DUPAN2 and CA19-9, surface markers, such as the CD4/CD8 ratio, and the CD57 cell population were assessed. Clinical stages were classified according to the TNM classification. The Foxp3CD4 T-cell population among the PBMCs was significantly increased in PC patients (8.10% +/- 4.65%) compared with healthy donors (2.47 +/- 0.78%) (P < 0.001). No significant relationships existed for the tumor markers, CD4/CD8 ratio, and CD57 cells. However, a significant correlation was found between Foxp3CD4 T cells among the PBMCs and the TNM stage (P < 0.05). Foxp3CD4 T cells are good markers for metastasis detection in PC patients and more accurate than other conventional tumor markers, especially at advanced stages of the disease.
(キーワード): Aged / Female / Forkhead Transcription Factors / Humans / Interleukin-2 Receptor alpha Subunit / Male / Middle Aged / Neoplasm Staging / Pancreatic Neoplasms / T-Lymphocyte Subsets / T-Lymphocytes, Regulatory
(出版サイトへのリンク): ● Publication site (DOI): 10.1097/01.mpa.0000240275.68279.13
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 17079944; ● Search Scopus @ Elsevier (PMID): 17079944; ● Search Scopus @ Elsevier (DOI): 10.1097/01.mpa.0000240275.68279.13

(DOI: 10.1097/01.mpa.0000240275.68279.13, PubMed: 17079944) H Hisaeda, S Hamano, C Mitoma-Obata, K Tetsutani, T Imai, H Waldmann, K Himeno and Koji Yasutomo :
Resistance to GITR signaling in antigen specific CD4+CD25+ regulatory T cells during plasmodium yoelii infection.,
European Journal of Immunology, Vol.35, No.12, 3516-3524, 2005.

(要約): CD4+ T cells are the major effector T cells against blood-stage Plasmodium yoelii infection. On the other hand, the lethal strain of P. yoelii (PyL) has acquired an escape mechanism from host T cell immunity by activating CD4+CD25+ regulatory T cells (Treg). Although the activation of Treg during PyL infection precludes the clearance of PyL from mice, it remains unclear whether activation of Treg is attributable to a specific response against PyL infection. Thus, we examined here whether Treg proliferate in an antigen-dependent manner during PyL infection. We also investigated the effector and regulatory mechanisms of Treg. Infection with PyL increased the number of CD4+CD25+ T cells, in which expression of Foxp3 mRNA is up-regulated. The Treg that were transferred into mice infected with PyL, but not with a non-lethal strain of P. yoelii (PyNL), proliferated during the initial 5 days following infection. The Treg from PyL-infected mice showed strong suppression compared with those from naive or PyNL-infected mice, and could suppress T cell activation by recognizing PyL- but not PyNL-derived antigens. Furthermore, the suppressive function of Treg activated in PyL-infected but not in naive mice could not be inhibited by treatment with an anti-glucocorticoid-induced TNFR family-related protein (GITR) mAb. These findings indicate that PyL infection specifically activates Treg that are specific for PyL-derived antigens. The infection also induces resistance for Treg to GITR signaling, and this eventually contributes to the escape of parasites from host T cell immunity.
(キーワード): Animals / Antibodies, Monoclonal / Antibodies, Protozoan / Female / Glucocorticoid-Induced TNFR-Related Protein / Immunity, Innate / Malaria / Mice / Mice, Inbred C57BL / Plasmodium yoelii / Receptors, Nerve Growth Factor / Receptors, Tumor Necrosis Factor / Self Tolerance / T-Lymphocytes, Regulatory
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/eji.200526073
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 16304635; ● Search Scopus @ Elsevier (PMID): 16304635; ● Search Scopus @ Elsevier (DOI): 10.1002/eji.200526073

(DOI: 10.1002/eji.200526073, PubMed: 16304635) Yuki Hayashi, Naozumi Ishimaru, Rieko Arakaki, Shin-ichi Tsukumo, Hitomi Fukui, Kenji Kishihara, Hiroshi Shiota, Koji Yasutomo and Yoshio Hayashi :
Effective Treatment of a Mouse Model of Sjogren's Syndrome With Eyedrop Administrasiton of Anti-CD4 Monoclonal Antibody,
Arthritis and Rheumatism, Vol.50, No.9, 2903-2910, 2004.

(要約): To determine whether eyedrop administration of an anti-CD4 monoclonal antibody (mAb) is effective in the treatment of Sjögren's syndrome (SS) using a mouse model of the disease. The anti-CD4 mAb was administered daily into the eyes of mice with SS from ages 4 to 8 weeks or ages 10 to 12 weeks. During treatment, tear volume was monitored and after final treatment, histologic features of the lacrimal and salivary glands, the phenotypes and function of T cells, and serum titers of anti-alpha-fodrin antibody were examined. Eyedrop administration of anti-CD4 mAb before the onset of SS prevented the autoimmune pathology seen in the lacrimal glands but not that in the salivary glands. Furthermore, eyedrop administration of anti-CD4 mAb after the development of SS inhibited mononuclear cell infiltration and the destruction of parenchyma only in the lacrimal glands. Eyedrop administration of anti-CD4 mAb suppressed the local activation of CD4+ T cells rather than deleting CD4+ T cells, which reduced the expansion of pathologic CD4+ T cells against alpha-fodrin. These results demonstrate the remarkable efficacy of anti-CD4 mAb eyedrops in the treatment of SS eye symptoms, which illustrates a new antibody-based therapeutic strategy for patients with eye problems caused by SS as well as other diseases.
(キーワード): Administration, Topical / Animals / Antibodies, Monoclonal / Antigens, CD4 / CD4-Positive T-Lymphocytes / Disease Progression / Dry Eye Syndromes / Female / Lacrimal Apparatus / Lymphocyte Activation / Mice / Models, Animal / Ophthalmic Solutions / 唾液腺 (salivary glands) / シェーグレン症候群 (Sjögren's syndrome) / Treatment Outcome
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/art.20472
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15457459; ● Search Scopus @ Elsevier (PMID): 15457459; ● Search Scopus @ Elsevier (DOI): 10.1002/art.20472

(DOI: 10.1002/art.20472, PubMed: 15457459) Maki Urushihara, Shoji Kagami, Michinori Ito, Koji Yasutomo, Shuji Kondo, Akiko Kitamura, Akiyoshi Takahashi and Yasuhiro Kuroda :
Transforming growth factor-β in renal disease with glycogen storage disease I,
Pediatric Nephrology, Vol.19, No.6, 676-678, 2004.

(要約): We report a 14-year-old patient with Japanese glycogen storage disease I (GSD-I) who was found to have proteinuria. Renal biopsy revealed massive tubular atrophy and interstitial fibrosis with mononuclear cell infiltration, but the glomeruli were almost normal. The epithelial cells of tubules contained periodic acid-Schiff-positive glycogen deposits digested by diastase. In an immunohistological study, transforming growth factor (TGF)-beta expression was increased in tubular epithelial cells compared with a normal control kidney specimen. These data suggest that increased TGF-beta expression is involved in the pathophysiology of renal interstitial fibrosis in a patient with GSD-I.
(キーワード): Glycogen storage disease I / Proteinuria / Renal interstitial fibrosis / Transforming growth factor-
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s00467-004-1456-6
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15064941; ● Search Scopus @ Elsevier (PMID): 15064941; ● Search Scopus @ Elsevier (DOI): 10.1007/s00467-004-1456-6

(DOI: 10.1007/s00467-004-1456-6, PubMed: 15064941) Yuki Hayashi, Shin-ichi Tsukumo, Hiroshi Shiota, Kenji Kishihara and Koji Yasutomo :
Antigen-Specific T Cell Repertoire Modification of CD4⁺CD25⁺ Regulatory T Cells,
The Journal of Immunology, Vol.172, No.9, 5240-5248, 2004.

(要約): T cell immune responses are regulated by the interplay between effector and suppressor T cells. Immunization with Ag leads to the selective expansion and survival of effector CD4(+) T cells with high affinity TCR against the Ag and MHC. However, it is not known if CD4(+)CD25(+) regulatory T cells (T(reg)) recognize the same Ag as effector T cells or whether Ag-specific TCR repertoire modification occurs in T(reg). In this study, we demonstrate that after a primary Ag challenge, T(reg) proliferate and TCR repertoire modification is observed although both of these responses were lower than those in conventional T cells. The repertoire modification of Ag-specific T(reg) after primary Ag challenge augmented the total suppressive function of T(reg) against TCR repertoire modification but not against the proliferation of memory CD4(+) T cells. These results reveal that T cell repertoire modification against a non-self Ag occurs in T(reg), which would be crucial for limiting excess primary and memory CD4(+) T cell responses. In addition, these studies provide evidence that manipulation of Ag-specific T(reg) is an ideal strategy for the clinical use of T(reg).
(キーワード): Animals / Antigen Presentation / Antigens / CD4-Positive T-Lymphocytes / 細胞分化 (cell differentiation) / 細胞分裂 (cell division) / Cells, Cultured / Columbidae / Complementarity Determining Regions / Cytochromes c / Epitopes, T-Lymphocyte / Immunization, Secondary / Immunologic Memory / Lymphocyte Count / Mice / Mice, Inbred A / Mice, Inbred C57BL / Receptors, Antigen, T-Cell, alpha-beta / T-Lymphocytes, Regulatory
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15100262; ● Search Scopus @ Elsevier (PMID): 15100262

(PubMed: 15100262) Maki Urushihara, Shoji Kagami, Koji Yasutomo, Michinori Ito, Shuji Kondo, Akiko Kitamura, Dag Malm, Helle Klenow, Oiviind Nilssen and Yasuhiro Kuroda :
Sisters with α-mannosidosis and systemic lupus erythematosus,
European Journal of Pediatrics, Vol.163, No.4-5, 192-195, 2004.

(要約): Alpha-mannosidosis is an autosomal recessive disorder caused by deficiency of lysosomal alpha-mannosidase (LAMAN). Here, we report two sisters with alpha-mannosidosis who developed systemic lupus erythematosus (SLE). The sisters were both homozygous for a one bp deletion within the LAMAN gene resulting in a truncated gene product. The coincidence of alpha-mannosidosis and SLE are discussed with regard to both clinical and molecular findings. CONCLUSION: alpha-mannnosidosis may contribute to the onset of systemic lupus erythematosus in predisposed patients.
(キーワード): Kidney biopsy / Lysosomal -mannosidase / Lupus nephritis / Mannosidosis
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s00431-004-1404-2
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 14760529; ● Search Scopus @ Elsevier (PMID): 14760529; ● Search Scopus @ Elsevier (DOI): 10.1007/s00431-004-1404-2

(DOI: 10.1007/s00431-004-1404-2, PubMed: 14760529) Hajime Hisaeda, Yoichi Maekawa, Daiji Iwakawa, Hiroko Okada, Kunisuke Himeno, Kenji Kishihara, Shin-ichi Tsukumo and Koji Yasutomo :
Escape of malaria parasites from host immunity requires CD4+CD25+ regulatory T-cells,
Nature Medicine, Vol.10, No.1, 29-30, 2004.

(要約): Infection with malaria parasites frequently induces total immune suppression, which makes it difficult for the host to maintain long-lasting immunity. Here we show that depletion of CD4(+)CD25(+) regulatory T cells (T(reg)) protects mice from death when infected with a lethal strain of Plasmodium yoelii, and that this protection is associated with an increased T-cell responsiveness against parasite-derived antigens. These results suggest that activation of T(reg) cells contributes to immune suppression during malaria infection, and helps malaria parasites to escape from host immune responses.
(キーワード): Animals / Antigens, CD4 / Malaria / Mice / Mice, Inbred BALB C / Plasmodium yoelii / Receptors, Interleukin-2 / T-Lymphocytes
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/nm975
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 14702631; ● Search Scopus @ Elsevier (PMID): 14702631; ● Search Scopus @ Elsevier (DOI): 10.1038/nm975

(DOI: 10.1038/nm975, PubMed: 14702631) Yoichi Maekawa, Shin-ichi Tsukumo, Shigeru Chiba, Hisamaru Hirai, Yuki Hayashi, Hiroko Okada, Kenji Kishihara and Koji Yasutomo :
Deltal-Notch3 interactious bias the functional differentiation of activated CD4+ T-Cells,
Immunity, Vol.19, No.4, 549-559, 2003.

(要約): Following activation by antigen, naive CD4+ T helper precursor cells execute distinct genetic programs that result in their differentiation toward the type 1 or type 2 helper T cell (Th1 or Th2) phenotype. Although the differentiation and function of these Th subsets has been well studied, little is known about the contribution to these differentiation events of cell surface receptors other than those for soluble cytokines, such as IL-12 or IL-4. Here, we provide direct evidence that the Delta1 interaction with Notch3 on CD4+ T cells transduces signals, promoting development toward the Th1 phenotype. The positive role of Notch signaling in effector cell differentiation was dose dependent, with high levels of stimulation resulting in reduced T cell activation. Our data revealed a clear contribution of Notch pathways to Th1 versus Th2 fate decisions, while also providing insight into another mechanism for inhibition of CD4+ T cell activation.
(キーワード): Animals / CD4-Positive T-Lymphocytes / 細胞分化 (cell differentiation) / Interferon-gamma / Intracellular Signaling Peptides and Proteins / Leishmania major / Leishmaniasis, Cutaneous / Membrane Proteins / Mice / Proto-Oncogene Proteins / Receptors, Cell Surface / Receptors, Notch / T-Box Domain Proteins / Transcription Factors
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/S1074-7613(03)00270-X
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 14563319; ● Search Scopus @ Elsevier (PMID): 14563319; ● Search Scopus @ Elsevier (DOI): 10.1016/S1074-7613(03)00270-X

(DOI: 10.1016/S1074-7613(03)00270-X, PubMed: 14563319) Yoichi Maekawa, Shin-ichi Tsukumo, Okada Hiroko, Kenji Kishihara and Koji Yasutomo :
Breakdown of peripheral T-cell tolerance by chronic IL-15 elevation,
Transplantation, Vol.76, No.2, 415-420, 2003.

(要約): Thymic deletion purges the repertoire of most developing T cells with the potential for overt self-reactivity, but some self-specific cells do emerge into the peripheral pool. Under most conditions, these potentially autoaggressive cells remain in a quiescent state. However, in some circumstances, they become activated and acquire effector function, leading to immune disease. It is thus important to clarify the mechanism(s) responsible for determining the balance between such inappropriate T-cell activation and the normal state of peripheral tolerance. In this article, we show that chronic elevation of interleukin-15 levels interferes with the tolerant state of CD8+ T cells through a process that involves activation of nonlymphoid antigen-presenting cells by CD4+asialo-GM1+ (ASGM1) or both CD4+ASGM1- and CD4-ASGM1+ cells. These findings suggest a potential role for dysregulated interleukin-15 production in promoting tolerance breakdown. This new information may be of potential use in improving tumor vaccines to self-antigens and in ameliorating autoimmune or graft-versus-host disease.
(キーワード): Animals / CD4-Positive T-Lymphocytes / CD8-Positive T-Lymphocytes / Fetal Tissue Transplantation / Graft vs Host Disease / Hematopoietic Stem Cell Transplantation / Immune Tolerance / Interleukin-15 / Liver / Lymphocyte Activation / Mice / Mice, Inbred AKR / Mice, SCID / Spleen / Thymus Gland / Transplantation Chimera
(出版サイトへのリンク): ● Publication site (DOI): 10.1097/01.TP.0000078900.71840.2B
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 12883202; ● Search Scopus @ Elsevier (PMID): 12883202; ● Search Scopus @ Elsevier (DOI): 10.1097/01.TP.0000078900.71840.2B

(DOI: 10.1097/01.TP.0000078900.71840.2B, PubMed: 12883202) 岩田明子, 江口洋, 塩田洋, 高橋昭良, 安友康二, 石橋広樹, 嵩原裕夫 :
視力低下を契機に発見された小児褐色細胞腫の1例,
臨床眼科, Vol.56, No.0, 1553-1556, 2002年.

(キーワード): 視力低下 / 小児 (infant) / 高血圧眼底 / 褐色細胞腫
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1570291225909602944; ● Summary page in Scopus @ Elsevier: 2-s2.0-0036445279

(CiNii: 1570291225909602944, Elsevier: Scopus) Koji Yasutomo, Horiuchi Takahiko, Shoji Kagami, Hiroshi Tsukamoto, Chinami Hashimura, Maki Urushihara and Yasuhiro Kuroda :
Mutation in DNASE I in people with systemic lupus erythematosus,
Nature Genetics, Vol.28, No.4, 313-314, 2001.

(要約): Systemic lupus erythematosus (SLE) is a highly prevalent human autoimmune diseases that causes progressive glomerulonephritis, arthritis and an erythematoid rash. Mice deficient in deoxyribonuclease I (Dnase1) develop an SLE-like syndrome. Here we describe two patients with a heterozygous nonsense mutation in exon 2 of DNASE1, decreased DNASE1 activity and an extremely high immunoglobulin G titer against nucleosomal antigens. These data are consistent with the hypothesis that a direct connection exists between low activity of DNASE1 and progression of human SLE.
(キーワード): Adolescent / Alleles / Animals / Antibodies, Antinuclear / Autoantibodies / B-Lymphocytes / DNA Mutational Analysis / Deoxyribonuclease I / Disease Progression / Enzyme Activation / Female / Heterozygote / Humans / Immunoglobulin G / Lupus Erythematosus, Systemic / Mice / Mutation / Nucleosomes / Polymorphism, Genetic / Sjogren's Syndrome
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/91070
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 11479590; ● Search Scopus @ Elsevier (PMID): 11479590; ● Search Scopus @ Elsevier (DOI): 10.1038/91070

(DOI: 10.1038/91070, PubMed: 11479590) Jeffrey R. Dorfman, Irena Stefanova, Koji Yasutomo and Ronald N. Germain :
CD4+ T-cell survival is not directly linked to self-MHC induced TCR signaling,
Nature Immunology, Vol.1, No.4, 329-335, 2000.

(要約): T cell receptor (TCR) signaling triggered by recognition of self-major histocompatibility complex (MHC) ligands has been proposed to maintain the viability of naïve T cells and to provoke their proliferation in T cell-deficient hosts. Consistent with this, the partially phosphorylated state of TCR zeta chains in naïve CD4+ and CD8+ T cells in vivo was found to be actively maintained by TCR interactions with specific peptide-containing MHC molecules. TCR ligand-dependent phosphorylation of TCR zeta was lost within one day of cell transfer into MHC-deficient hosts, yet the survival of transferred CD4+ lymphocytes was the same in recipients with or without MHC class II expression for one month. Thus, despite clear evidence for TCR signaling in nonactivated naïve T cells, these data argue against the concept that such signaling plays a predominant role in determining lymphocyte lifespan.
(キーワード): Animals / CD4-Positive T-Lymphocytes / Cell Survival / Lymphocyte Activation / Major Histocompatibility Complex / Membrane Proteins / Mice / Mice, Inbred C57BL / Receptors, Antigen, T-Cell / Signal Transduction
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/79783
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 11017105; ● Search Scopus @ Elsevier (PMID): 11017105; ● Search Scopus @ Elsevier (DOI): 10.1038/79783

(DOI: 10.1038/79783, PubMed: 11017105) Tianqian Zhang, Yoichi Maekawa, Koji Yasutomo, Hiroyuki Ishikawa, Nashed Baher Fawzy, Teruki Dainichi, Hajime Hisaeda, Tohru Sakai, Michiyuki Kasai, Toshiaki Mizuochi, Tetsuji Asao, Nobuhiko Katunuma and Kunisuke Himeno :
Pepstatin A sensitive aspartic proteases in lysosome are involved in degradation of the invariant chain and antigen-processing in antigen presenting cells of mice infected with leishmania major,
Biochemical and Biophysical Research Communications, Vol.276, No.2, 693-701, 2000.

(要約): We previously reported that CA074, a specific inhibitor of cathepsin B, significantly deviated immune responses from the disease-promoting Th2 type to the protective Th1 type in BALB/c mice infected with Leishmania major. Herein, we found that pepstatin A-sensitive aspartic proteases (PSAP) in lysosomes seem to play a different role from that of cathepsin B in antigen-processing and Ii-degradation. That is, cathepsin B appears to digest 16-, 28-, and 31-kDa peptides of soluble leishmania antigen (SLA), whereas PSAP seems to process mainly 28-kDa peptides. Furthermore, the latter protease contributed to the degradation of Ii but cathepsin B did not. Following treatment with pepstatin A, both Th1 and Th2 responses were profoundly suppressed in resistant DBA/2 mice (H-2(d)) and in susceptible BALB/c mice (H-2(d)), and both strains of mice became markedly susceptible compared with the untreated groups, probably owing to failure in degradation of Ii and partly to failure in digestion of 28-kDa peptide.
(キーワード): Animals / Antibody Formation / Antigen Presentation / Antigen-Presenting Cells / Antigens, Differentiation, B-Lymphocyte / Antigens, Protozoan / Aspartic Acid Endopeptidases / CD4-Positive T-Lymphocytes / Cathepsin B / 細胞分裂 (cell division) / Cysteine Proteinase Inhibitors / 細胞質分裂 (cytokinesis) / Dipeptides / Disease Models, Animal / Female / Histocompatibility Antigens Class II / Leishmania major / Leishmaniasis, Cutaneous / Lymphocytes / Lysosomes / Mice / Mice, Inbred BALB C / Mice, Inbred DBA / Pepstatins / Th1 Cells / Th2 Cells
(出版サイトへのリンク): ● Publication site (DOI): 10.1006/bbrc.2000.3538
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 11027533; ● Summary page in Scopus @ Elsevier: 2-s2.0-0034710836

(DOI: 10.1006/bbrc.2000.3538, PubMed: 11027533, Elsevier: Scopus) Koji Yasutomo, Bruno Lucas and Ronald N Germain :
TCR signaling for initiation and completion of thymocyte positive selection has distinct requirements for ligand quality and presenting cell type,
The Journal of Immunology, Vol.165, No.6, 3015-3022, 2000.

(要約): Thymocyte selection involves signaling by TCR engaging diverse self-peptide:MHC molecule ligands on various cell types in the cortex and medulla. Here we separately analyze early and late stages of selection to better understand how presenting cell type, ligand quality, and the timing of TCR signaling contribute to intrathymic differentiation. TCR transgenic CD4+CD8+ thymocytes (double positive (DP)) from MHC-deficient mice were stimulated using various presenting cells and ligands. The resulting CD69high cells were isolated and evaluated for maturation in reaggregate cultures with wild-type or MHC molecule-deficient thymic stroma with or without added hemopoietic dendritic cells (DC). Production of CD4+ T cells required TCR signaling in the reaggregates, indicating that transient recognition of self-ligands by DP is inadequate for full differentiation. DC bearing a potent agonist ligand could initiate positive selection, producing activated thymocytes that matured into agonist-responsive T cells in reaggregates lacking the same ligand. DC could also support the TCR signaling necessary for late maturation. These results argue that despite the negative role assigned to DC in past studies, neither the peptide:MHC molecule complexes present on DC nor any other signals provided by these cells stimulate only thymocyte death. These findings also indicate that unique epithelial ligands are not necessary for positive selection. They provide additional insight into the role of ligand quality in selection events and support the concept that following initiation of maturation from the DP state, persistent TCR signaling is characteristic of and perhaps required by T cells.
(キーワード): Animals / Antigen-Presenting Cells / Antigens, CD / Antigens, CD4 / Antigens, CD8 / Antigens, Differentiation, T-Lymphocyte / CD4-Positive T-Lymphocytes / Cell Aggregation / Cell Differentiation / Cell Survival / Cells, Cultured / Cytochrome c Group / Dendritic Cells / Histocompatibility Antigens Class II / Immunophenotyping / Lectins, C-Type / Ligands / Lymphocyte Activation / Major Histocompatibility Complex / Mice / Mice, Inbred C57BL / Mice, Knockout / Mice, Transgenic / Peptides / Proto-Oncogene Proteins c-bcl-2 / Receptors, Antigen, T-Cell / Signal Transduction / Stromal Cells / T-Lymphocyte Subsets / Thymus Gland / Up-Regulation
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 10975810; ● Summary page in Scopus @ Elsevier: 2-s2.0-0034665493

(PubMed: 10975810, Elsevier: Scopus) Koji Yasutomo, C Doyle, L Miele, C Fuchs and RN Germain :
The duration of antigen receptor signalling determines CD4+ versus CD8+ T-cell lineage fate,
Nature, Vol.404, No.6777, 506-510, 2000.

(要約): Signals elicited by binding of the T-cell antigen receptor and the CD4/CD8 co-receptor to major histocompatibility complex (MHC) molecules control the generation of CD4+ (helper) or CD8+ (cytotoxic) T cells from thymic precursors that initially express both co-receptor proteins. These precursors have unique, clonally distributed T-cell receptors with unpredictable specificity for the self-MHC molecules involved in this differentiation process. However, the mature T cells that emerge express only the CD4 (MHC class II-binding) or CD8 (MHC class I-binding) co-receptor that complements the MHC class-specificity of the T-cell receptor. How this matching of co-receptor-defined lineage and T-cell-receptor specificity is achieved remains unknown, as does whether signalling by the T-cell receptors, co-receptors and/or general cell-fate regulators such as Notch-1 contributes to initial lineage choice, to subsequent differentiation processes or to both. Here we show that the CD4 versus CD8 lineage fate of immature thymocytes is controlled by the co-receptor-influenced duration of initial T-cell receptor-dependent signalling. Notch-1 does not appear to be essential for this fate determination, but it is selectively required for CD8+ T-cell maturation after commitment directed by T-cell receptors. This indicates that the signals constraining CD4 versus CD8 lineage decisions are distinct from those that support subsequent differentiation events such as silencing of co-receptor loci.
(キーワード): Animals / Antigens, CD / Antigens, CD4 / Antigens, CD8 / Antigens, Differentiation, T-Lymphocyte / CD4-Positive T-Lymphocytes / CD8-Positive T-Lymphocytes / Cell Lineage / Cells, Cultured / Female / Lectins, C-Type / Leukopoiesis / Ligands / Major Histocompatibility Complex / Male / Membrane Proteins / Mice / Mice, Inbred C57BL / Mice, Transgenic / Models, Immunological / Receptor, Notch1 / Receptors, Antigen, T-Cell / Receptors, Cell Surface / Signal Transduction / Thymus Gland / Time Factors / Transcription Factors
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/35006664
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 10761920; ● Search Scopus @ Elsevier (PMID): 10761920; ● Search Scopus @ Elsevier (DOI): 10.1038/35006664

(DOI: 10.1038/35006664, PubMed: 10761920) FW Lu, Koji Yasutomo, GB Goodman, LJ McHeyzer-Williams, MG McHeyzer-Williams, RN Germain and JD Ashwell :
Thymocyte resistance to glucocorticoids leads to antigen-specific unresponsiveness due to "holes" in the T cell repertoire,
Immunity, Vol.12, No.2, 183-192, 2000.

(要約): We have proposed that glucocorticoids antagonize TCR-mediated activation and influence which TCR avidities result in positive or negative selection. We now analyze the immune response of mice whose thymocytes express antisense transcripts to the glucocorticoid receptor (TKO mice). TKO mice responded normally to the complex antigen PPD but were proliferative nonresponders to pigeon cytochrome c 81-104 (PCC), having a large decrease in the frequency of PCC-responsive CD4+ T cells. Unlike wild-type T cells, few TKO T cells in PCC-specific cell lines expressed V alpha11+Vbeta3+. Furthermore, for naive CD4+ T cells from unimmunized TKO mice, the frequencies of many of the molecular features common to the CDR3 regions of PCC-responsive V alpha11+Vbeta3+ cells were substantially decreased. Thus, thymocyte glucocorticoid hyporesponsiveness resulted in loss of cells capable of responding to PCC, corresponding to an antigen-specific "hole" in the T cell repertoire.
(キーワード): Animals / Cell Line / Cytochrome c Group / Female / Glucocorticoids / Male / Mice / Mice, Inbred C57BL / Mice, Transgenic / Receptors, Antigen, T-Cell, alpha-beta / Receptors, Glucocorticoid / T-Lymphocytes / Thymus Gland
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/S1074-7613(00)80171-5
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 10714684; ● Summary page in Scopus @ Elsevier: 2-s2.0-0034143917

(DOI: 10.1016/S1074-7613(00)80171-5, PubMed: 10714684, Elsevier: Scopus) Shoji Kagami, Shuji Kondo, Klemens Loster, Werner Reutter, Takashi Kuhara, Koji Yasutomo and Yasuhiro Kuroda :
Alpha1beta1 integrin-mediated collagen matrix remodeling by rat mesangial cells is differentially regulated by transforming growth factor-beta and platelet-derived growth factor-BB,
Journal of the American Society of Nephrology, Vol.10, No.4, 779-789, 1999.

(要約): Pathologic remodeling of mesangial matrix after glomerular injury is the central biologic feature of glomerular scarring (sclerosis). Transforming growth factor-beta (TGF-beta) and platelet-derived growth factor (PDGF)-BB have been implicated in the development of glomerular scarring in rat and human glomerulonephritis. To clarify molecular and cellular mechanisms involved in abnormal mesangial remodeling, this study focused on the role of alpha1beta1 integrin, a collagen/laminin receptor, in rat mesangial cells, using collagen gel contraction as an experimental model of in vivo collagen matrix remodeling and scar formation. In addition, the influence of TGF-beta and PDGF-BB on mesangial cell (MC)-mediated collagen gel contraction in association with the alpha1beta1 integrin expression was evaluated. Integrin function blocking studies using anti-alpha1, beta1 subunit antibodies indicated that MC-alpha1beta1 integrin is essentially required not only for collagen-dependent adhesion/migration, but also for gel contraction. Protein synthesis and mRNA analysis experiments demonstrated that TGF-beta, but not PDGF-BB, increases the expression of alpha1beta1 integrin in mesangial cells cultured on plastic surface and in collagen gels. The upregulation of alpha1beta1 integrin expression by TGF-beta correlated with increases in gel contraction and collagen-dependent adhesion but not migration of mesangial cells. On the other hand, PDGF-BB enhanced MC-mediated gel contraction and migration without affecting cell adhesion to collagen I. Growth factor-induced collagen-dependent adhesion, migration, and gel contraction were significantly attenuated by incubation with anti-alpha1, beta1 subunit antibodies. Thus, these data indicate that alpha1beta1 integrin-mediated collagen matrix remodeling can be modulated by TGF-beta and PDGF-BB via different mechanisms. Alpha1 integrin-mediated mesangial matrix remodeling induced by TGF-beta or PDGF-BB may be a pathogenic mechanism leading to glomerular scarring.
(キーワード): Animals / Blotting, Northern / Cell Adhesion / Cell Movement / Cells, Cultured / コラーゲン (collagen) / Disease Models, Animal / 細胞外マトリックス (extracellular matrix) / Glomerular Mesangium / Humans / 免疫組織化学 (immunohistochemistry) / Integrin alpha1beta1 / Integrins / Platelet-Derived Growth Factor / Rats / Rats, Sprague-Dawley / Reference Values / Transforming Growth Factor beta
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 10203362; ● Summary page in Scopus @ Elsevier: 2-s2.0-0032588651

(PubMed: 10203362, Elsevier: Scopus) B Lucas, I Stefanova, Koji Yasutomo, N Dautigny and RN Germain :
Divergent changes in the sensitivity of maturing T cell to structurally related ligands underlies formation of a useful T cell repertoire,
Immunity, Vol.10, 367-376, 1999. H Hisaeda, T Sakai, H Ishikawa, Y Maekawa, Koji Yasutomo, RA Good and K Himeno :
Heat shock protein 65 induced by gammadelta T cells prevents apoptosis of macrophages and contributes to host defense in mice infected with Toxoplasma gondii,
The Journal of Immunology, Vol.159, No.5, 2375-2381, 1997. Koji Yasutomo, K Maeda, H Hisaeda, RA Good, Y Kuroda and K Himeno :
The Fas-deficient SCID mouse exhibits the development of T cells in the thymus,
The Journal of Immunology, Vol.158, No.10, 4729-4733, 1997. T Abe, M Ito, Y Okamoto, HJ Kim, Y Takaue, Koji Yasutomo, A Makimoto, T Yamaue, Y Kawano, T Watanabe, T Shimada and Y Kuroda :
Transduction of retrovirus-mediated NeoR gene into CD34+ cells purified from granulocyte colony-stimulating factor(G-CSF) mobilized infant and cord blood,
Exp Hematol, Vol.25, 966-971, 1997. Mowla Mohammed Golam Chowdhury, Kenichi Maeda, Koji Yasutomo, Yoichi Maekawa, Atsuko Furukawa, Miyuki Azuma, Hideyuki Nagasawa and Kunisuke Himeno :
Antigen-specific B cells are required for the secondary response of T cells but not for their priming,
European Journal of Immunology, Vol.26, No.7, 1628-1633, 1996.

(要約): We studied the potential role of B cells in T cell responses using severe-combined immunodeficient (SCID) mice grafted with the thymus from fetal C.B-17 mice (TG mice). These mice developed both CD4+ and CD8+ T cells, but not B cells within 2 months after transplantation. TG mice showed normal delayed-type hypersensitivity responses against the immunizing antigen ovalbumin (OVA). Lymph node (LN) cells of TG mice proliferated well in response to concanavalin A (Con A). Further, Con A stimulation induced the production of interleukin (IL)-2, IL-6 and interferon (IFN)-gamma and the expression of IL-4 mRNA. Thus, TG mice were reconstituted without remarkable immunodeficiency. However, these T cells failed to proliferate to OVA stimulation. Response to OVA was also inhibited in SCID mice grafted with fetal C.B-17 liver cells when B cells were depleted in the proliferation assay. Unresponsiveness against immunizing antigen was restored by the addition of antigen-primed B cells, but not by naive B cells, lipopolysaccharide-activated B cells or B cells primed with sheep red blood cells. Next, we examined whether antigen-primed B cells could induce T cell responses without professional antigen-presenting cells (APC). T and B cells were purified from OVA-immunized mice by cell sorter. These T cells proliferated in response to OVA and produced IFN-gamma in the absence of non-B APC. When anti-CD80 or anti-CD86 was added in the assay, proliferation and IFN-gamma production was inhibited. These results indicate that B cells activated specifically with antigen are required for the secondary response of T cells, but not for their priming.
(キーワード): Animals / Antigen-Presenting Cells / Antigens, CD28 / Antigens, CD80 / B-Lymphocytes / Epitopes / Fetal Tissue Transplantation / 造血 (hematopoiesis) / Hypersensitivity, Delayed / Immunization, Secondary / Liver Transplantation / Lymphocyte Activation / Mice / Mice, SCID / Ovalbumin / Tリンパ球 (T lymphocytes) / Thymus Gland
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/eji.1830260733
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 8766571; ● Summary page in Scopus @ Elsevier: 2-s2.0-0029947638

(DOI: 10.1002/eji.1830260733, PubMed: 8766571, Elsevier: Scopus) Atsuko Furukawa, Kenichi Maeda, Masayuki Miyasaka, Susumu Kagawa, Koji Yasutomo, Hajime Hisaeda, HIdeyuki Nagasawa and Kunisuke Himeno :
Establishment of a xenogeneic chimera without GVHD in NK cell-depleted SCID mice by grafting rat fetal liver cells,
Cellular Immunology, Vol.164, No.2, 176-181, 1995.

(要約): Rat lymphopoiesis did not develop when naive SCID mice were transplanted with rat fetal liver cells. However, when SCID mice were depleted of NK cells by administration of anti-murine IL-2R beta mAb before transplantation, remarkable reconstitution of both rat T and B cells was observed in these mice without any evidence of graft-versus-host disease macroscopically or histologically. T cells in these reconstituted mice proliferated well in response to Con A and third-party rat and mouse antigens, whereas no response was seen to the stimulation with either donor rat- or host mouse-type cells. When these xenogeneic chimera mice had been immunized with SRBC, these mice exhibited DTH reaction and antibody production against the homologous antigen. These results indicate that rat fetal liver cells can differentiate to functional T and B cells in the xenogeneic microenvironment of SCID mice, if host NK cells are depleted beforehand. These rat-type T cells develop within SCID thymuses and acquire tolerance to either donor F344 rat or host SCID mouse antigens.
(キーワード): Animals / Antibody Formation / B-Lymphocytes / Chimera / Graft Survival / Graft vs Host Disease / Hematopoietic Stem Cell Transplantation / Hypersensitivity, Delayed / Killer Cells, Natural / Liver / Liver Transplantation / Lymphocyte Activation / Lymphocyte Depletion / Mice / Mice, SCID / Rats / Rats, Inbred F344 / Skin Transplantation / Tリンパ球 (T lymphocytes) / Transplantation, Heterologous
(出版サイトへのリンク): ● Publication site (DOI): 10.1006/cimm.1995.1159
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 7656325; ● Summary page in Scopus @ Elsevier: 2-s2.0-0029083917

(DOI: 10.1006/cimm.1995.1159, PubMed: 7656325, Elsevier: Scopus) Koji Yasutomo, Kenichi Maeda, Shigekazu Nagata, Hideyuki Nagasawa, Kaname Okada, A. Robert Good, Yasuhiro Kuroda and Kunisuke Himeno :
Defective T cells from gld mice play a pivotal role in development of Thy-1.2+B220+ cells and autoimmunity,
The Journal of Immunology, Vol.153, No.12, 5855-5864, 1994.

(要約): The gld mouse represents a fascinating animal model of autoimmune disease, which is characterized by massive development of Thy-1.2+B220+ CD4-CD8- cells. These cells thus have double positive markers for T and B cells, but are double negative for CD4 and CD8 markers and are thus designated DN cells in the present context. An additional important feature in gld mice is a defect in expression of Fas ligand. To investigate the regulatory role of bone marrow-derived cells for the development of these DN cells and of gld autoimmunity, we constructed chimeric mice transplanted with fetal liver cells or fetal thymus from gld mice into nonirradiated severe combined immunodeficient (SCID) mice. These chimeric mice regenerated, developed both these DN cells and the gld autoimmune syndrome and also generalized lymphoproliferative disorders. However, when fetal liver cells from both gld and non-gld mice (C57BL/10 Thy-1.1 mice) were co-transplanted into SCID mice, the development of DN cells was apparently inhibited. Further, this inhibition was also seen in SCID mice that had been grafted with both gld and non-gld fetal thymus revealing the pivotal role played by T cells in development of DN cells. When B cells purified from non-gld (C3H+/+) mice were transplanted into SCID mice grafted with gld fetal thymus, the development of DN cells was not inhibited. Taken together, these findings indicate that T cells from non-gld mice inhibit the expression of gld features, e.g., lymphoproliferation, immune-based nephritic disease, and autoantibody production. These findings also suggest that the Fas ligand is selectively expressed on T cells.
(キーワード): Animals / Antigens, Surface / Autoimmune Diseases / B-Lymphocytes / Enzyme-Linked Immunosorbent Assay / Fetal Tissue Transplantation / Flow Cytometry / Leukocyte Common Antigens / Liver Transplantation / Lymphocyte Activation / Lymphocyte Culture Test, Mixed / Mice / Mice, Inbred C3H / Mice, Inbred C57BL / Mice, Mutant Strains / Mice, SCID / Tリンパ球 (T lymphocytes) / Thy-1 Antigens / Thymus Gland / Transplantation Chimera / fas Receptor
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 7527451; ● Search Scopus @ Elsevier (PMID): 7527451

(PubMed: 7527451) Mowla Mohammed Golam Chowdhury, Atsuko Furukawa, Susumu Kagawa, Kenichi Maeda, Koji Yasutomo and Kunisuke Himeno :
B cells are required as APC for antigen-specific T cell proliferation but not the differentiation or priming of those T cells,
The Tokushima Journal of Experimental Medicine, Vol.41, No.1-2, 1-8, 1994.

(要約): We studied the influences of B cells on functional differentiation of T cells using SCID mice grafted with fetal thymus of C.B-17 mice (TG mice). T cells were shown to be reconstituted in TG mice without B cell development. These mice showed normal DTH response to SRBC and OVA. LN cells of these mice produced cytokines including IL-2, IL-4, IL-6 and IFN-gamma according to Con A stimulation. Thus, majority of T cell functions seem to differentiate in the absence of B cells. However, T cells of TG mice failed to proliferate in response to immunizing antigens in vitro, although they responded well to stimulation with Con A. This unresponsiveness of T cells in TG mice to these antigens was restored when antigen-primed B cells were added to the proliferation assay. Such an inability of T cells in antigen-specific proliferation was not seen in SCID mice grafted with C.B-17 fetal liver cells, in which B cells as well as T cells were efficiently reconstituted (FLT mice). T cell proliferation to immunizing antigen was also abrogated in FLT mice when B cells were depleted from lymphoid population. These results indicate that T cells can functionally differentiate and be primed in the absence of B cells, but they require B cells to proliferate in response to foreign antigens.
(キーワード): Animals / Antigen-Presenting Cells / B-Lymphocytes / 細胞分化 (cell differentiation) / 細胞分裂 (cell division) / Concanavalin A / Epitopes / Immunization / Lymphocyte Activation / Mice / Mice, SCID / Tリンパ球 (T lymphocytes) / Thymus Gland
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 7524190; ● Summary page in Scopus @ Elsevier: 2-s2.0-0028452350

(PubMed: 7524190, Elsevier: Scopus) Koji Yasutomo, T Suzue, A Nishioka, H Kozan, T Sekiguchi, K Ohara, T Okamoto, T Iwai and S Endo :
Partial trisomy for short arm of chromosome 5,
Acta Paediatrica Japonica; Overseas edition, Vol.35, No.4, 336-339, 1993.

(要約): We present two unrelated cases of partial trisomy for the short arm of chromosome 5, the first such cases reported in Japan. The features are characterized by hypertelorism, low set ears, arachnodactyly, laryngostenosis, hypotonia and some cerebral malformation. The characteristic facial expression and arachnodactyly are the key features used to diagnose this disorder. A high-resolution chromosome banding technique showed that the karyotype of the first patient was 46,XX,inv dup(5) (p13.1-->p15.3) de novo and that of the second patient was 46,XX,dir dup(5) (p13.3-->p15.2) de novo. The similar symptoms in the two cases, despite the difference in karyotypes, were caused by duplication of 5p including segment 5p13. This would be a key site for this disorder.
(キーワード): Abnormalities, Multiple / Brain / Chromosome Banding / Chromosomes, Human, Pair 5 / Ear, External / Female / Humans / Hypertelorism / Infant, Newborn / Karyotyping / Laryngostenosis / Magnetic Resonance Imaging / Marfan Syndrome / Muscle Hypotonia / Phenotype / Trisomy
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 8379327; ● Search Scopus @ Elsevier (PMID): 8379327

(PubMed: 8379327) Koji Yasutomo, Toshiaki Hashimoto, Masahito Miyazaki and Yasuhiro Kuroda :
Recurrent torticollis as a presentation of moyamoya disease,
Journal of Child Neurology, Vol.8, No.2, 187-188, 1993.

(キーワード): Basal Ganglia / Cerebral Angiography / Cerebral Infarction / Child, Preschool / Female / Frontal Lobe / Humans / 磁気共鳴映像法 (magnetic resonance imaging) / Moyamoya Disease / Recurrence / Regional Blood Flow / Torticollis
(出版サイトへのリンク): ● Publication site (DOI): 10.1177/088307389300800215
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 8505483; ● Search Scopus @ Elsevier (PMID): 8505483; ● Search Scopus @ Elsevier (DOI): 10.1177/088307389300800215

(DOI: 10.1177/088307389300800215, PubMed: 8505483) Koji Yasutomo and K Himeno :
Monitoring of veno-occlusive disease after bone-marrow transplantation by serum aminopropeptide of type III Procollagen,
The Lancet, Vol.342, 1062, 1993. Koji Yasutomo :
Endothelin and hemolytic uremic syndrome,
Pediatrics, Vol.89, 1127, 1992.

MISC

Keiko Kataoka, Hideyuki Nemmoto, Akiko Sakurai, Koji Yasutomo and Masataka Shikanai :
Preventive effect of fermented brown rice and rice bran on spontaneous type 1 diabetes in NOD female mice,
Journal of Functional Foods, Vol.78, 104356, 2021.

(徳島大学機関リポジトリ): ● Metadata: 116549
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.jff.2021.104356
(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-85099455517

(徳島大学機関リポジトリ: 116549, DOI: 10.1016/j.jff.2021.104356, Elsevier: Scopus)

総説・解説

安友康二 :
ヒト免疫・炎症性疾患の原因遺伝子同定研究の最前線,
BIO Clinica, Vol.38, No.2, 104-105, 2023年. 近藤博之, 安友康二 :
BNT162b2 mRNA COVID-19ワクチン後の効果に関連するメモリーCD8T細胞マーカー,
臨床免疫·アレルギー科, Vol.79, No.1, 44-48, 2023年. 有持秀喜, 安友康二 :
自己炎症性疾患と細胞死,
医学のあゆみ, Vol.283, No.5, 494-500, 2022年. 大塚邦紘, 安友康二 :
新規動物モデルを用いた肺線維症の発症機構の解明,
医学のあゆみ, Vol.283, No.1, 41-46, 2022年. 佐々木由紀, 安友康二 :
希少ヒト疾患の遺伝子変異の機能解析,
実験医学, Vol.40, No.15, 2493-2498, 2022年. Takeo Minamikawa, Takaaki Koma, Suzuki Akihiro, Kentaro Nagamatsu, Takeshi Yasui, Koji Yasutomo and Masako Nomaguchi :
Inactivation of SARS-CoV-2 by deep ultraviolet light emitting diode: A review,
Japanese Journal of Applied Physics, Vol.60, No.9, 090501, Aug. 2021.

(出版サイトへのリンク): ● Publication site (DOI): 10.35848/1347-4065/ac19d1
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.35848/1347-4065/ac19d1

(DOI: 10.35848/1347-4065/ac19d1) 南川丈夫, 駒貴明, 鈴木昭浩, 永松謙太郎, 安井武史, 安友康二, 野間口雅子 :
Withコロナ時代に向けた深紫外LEDの活用法, --- ∼深紫外LEDによるウイルス不活化の試み∼ ---,
クリーンテクノロジー, Vol.31, No.6, 1-5, 2021年6月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520857063623582336

(CiNii: 1520857063623582336) 南川丈夫, 駒貴明, 鈴木昭浩, 永松謙太郎, 安井武史, 安友康二, 野間口雅子 :
深紫外LEDによる新型コロナウイルス不活化への試み,
月刊オプトロニクス, Vol.40, No.6, 132-137, 2021年5月. 南川丈夫, 駒貴明, 鈴木昭浩, 永松謙太郎, 安井武史, 安友康二, 野間口雅子 :
深紫外LEDを用いた新型コロナウイルスの不活化,
O plus E, Vol.43, No.2, 137-142, 2021年3月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1521699231001747584

(CiNii: 1521699231001747584) 佐々木由紀, 安友康二 :
(原発性免疫不全症候群 : 最新の疾患分類と新規疾患を中心に) -- (自己炎症性疾患),
日本臨牀, Vol.78, No.1190, 423-425, 2020年12月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520573331050729472

(CiNii: 1520573331050729472) 佐々木由紀, 安友康二 :
(原発性免疫不全症候群 : 最新の疾患分類と新規疾患を中心に) -- (自己炎症性疾患),
日本臨牀, Vol.78, No.1190, 420-422, 2020年12月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1524232505747826816

(CiNii: 1524232505747826816) 大塚邦紘, 安友康二 :
特発性肺線維症の病態におけるネクロプトーシス,
臨床免疫·アレルギー科, Vol.74, No.2, 192-198, 2020年8月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520010380775998720

(CiNii: 1520010380775998720) 九十九伸一, 安友康二 :
メモリーT細胞と代謝 (特集免疫と代謝),
臨床免疫·アレルギー科, Vol.73, No.5, 456-460, 2020年5月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1523669554862108032

(CiNii: 1523669554862108032) 大塚邦紘, 安友康二 :
ヒト免疫疾患の疾患遺伝子解析からのアプローチ家族性肺線維症の原因遺伝子同定研究から肺線維化の病態を探る,
炎症と免疫, Vol.28, No.6, 454-459, 2020年. 大塚邦紘, 安友康二 :
遺伝・ゲノム学特発性肺線維症と遺伝子変異,
医学のあゆみ, Vol.275, No.9, 988-989, 2020年. 佐々木由紀, 安友康二 :
プロテアソーム変異自己炎症性疾患,
Medical Science digest, Vol.45, No.4, 205-208, 2019年4月. 九十九伸一, 安友康二 :
Notchシグナルによる細胞内代謝制御 (特集免疫系を介したシステム連関 : 恒常性の維持と破綻) -- (免疫細胞における代謝調節),
生体の科学, Vol.70, No.2, 109-113, 2019年3月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520291856004810240

(CiNii: 1520291856004810240) 有持秀喜, 安友康二 :
自己炎症性疾患の原因遺伝子の同定の歴史,
医学のあゆみ, Vol.267, No.9, 642-646, 2018年12月. 佐々木由紀, 安友康二 :
免疫プロテアソーム失調による自己炎症のサイトカイン制御,
臨床免疫·アレルギー科, Vol.69, No.5, 505-510, 2018年5月. 安友康二 :
NLRC4変異に起因する自己炎症性疾患の分子機構と病態,
感染·炎症·免疫, Vol.48, No.1, 12-17, 2018年4月. 安友康二 :
自己炎症性症候群の原因遺伝子 (第5土曜特集マクロファージのすべて) -- (マクロファージのかかわる臨床疾患),
医学のあゆみ, Vol.259, No.5, 498-502, 2016年10月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1523669555219653120

(CiNii: 1523669555219653120) 安友康二 :
細胞死とインフラマソーム (特集生体侵襲と細胞死),
Thrombosis medicine, Vol.6, No.3, 216-220, 2016年9月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1521136281133235712

(CiNii: 1521136281133235712) 北村明子, 安友康二 :
稀少遺伝性疾患の原因遺伝子同定法の進歩,
臨床免疫·アレルギー科, Vol.66, No.2, 194-198, 2016年8月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520010378543918592

(CiNii: 1520010378543918592) Hideki Arimochi, Yuki Sasaki, Akiko Kitamura and Koji Yasutomo :
Dysfunctional immunoproteasomes in autoinflammatory diseases,
Inflammation and Regeneration, Vol.36, No.13, May 2016.

(徳島大学機関リポジトリ): ● Metadata: 113982
(出版サイトへのリンク): ● Publication site (DOI): 10.1186/s41232-016-0011-8
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29259686; ● Search Scopus @ Elsevier (PMID): 29259686; ● Search Scopus @ Elsevier (DOI): 10.1186/s41232-016-0011-8

(徳島大学機関リポジトリ: 113982, DOI: 10.1186/s41232-016-0011-8, PubMed: 29259686) 安友康二 :
NLRC4変異による細胞死機能異常と疾患【細胞死新しい実行メカニズムの謎に迫り疾患を理解するネクロプトーシス，パイロトーシス，フェロトーシスとは?死を契機に引き起こされる免疫，炎症，再生の分子機構とは?】,
実験医学, Vol.34, No.7, 1154-1158, 2016年5月. 佐々木由紀, 安友康二 :
免疫プロテアソーム機能異常と疾患(特集;イラストで見る自己免疫疾患の発症機序を解き明かす鍵とは?),
Mebio, Vol.45, No.3, 88-93, 2016年3月. 安友康二 :
NLRC4と自己炎症性症候群,
炎症と免疫, Vol.24, No.1, 24-28, 2015年12月. 安友康二 :
免疫プロテアソーム機能異常による自己炎症性疾患 (特集プロテアソームと疾患),
細胞, Vol.47, No.12, 582-585, 2015年11月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520291855208126592

(CiNii: 1520291855208126592) 前川洋一, 安友康二 :
NotchシグナルによるメモリーCD4 T細胞の生存制御 (特集自己免疫疾患の病態解明の新展開),
臨床免疫·アレルギー科, Vol.64, No.3, 219-226, 2015年9月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1523388080485658368

(CiNii: 1523388080485658368) 安友康二 :
NotchシグナルによるメモリーCD4+T細胞の生存制御,
実験医学, Vol.33, No.12, 1978-1985, 2015年8月. 石舟智恵子, 安友康二 :
Ahrによる腸管の恒常性制御 (レドックスUPDATE ストレス制御の臨床医学・健康科学に関する別冊号),
医学のあゆみ, 90-95, 2015年7月. 安友康二 :
新たな家族性自己炎症性疾患の責任遺伝子の同定 (特集細胞死と疾患),
臨床免疫·アレルギー科, Vol.63, No.5, 436-440, 2015年5月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520010380337678592

(CiNii: 1520010380337678592) 安友康二 :
【細胞死と疾患】新たな家族性自己炎症性疾患の責任遺伝子の同定,
臨床免疫·アレルギー科, Vol.63, No.5, 436-440, 2015年5月. 安友康二 :
免疫プロテアソームと免疫疾患,
臨床免疫·アレルギー科, Vol.63, No.1, 73-77, 2015年1月.

(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1522825130590386432

(CiNii: 1522825130590386432) 安友康二 :
免疫プロテアソームと免疫疾患,
臨床免疫·アレルギー科, Vol.63, No.1, 73-77, 2015年1月. 安友康二 :
【炎症-全体像を知り慢性疾患を制御する炎症シグナル，免疫細胞のダイナミズムからがん・糖尿病などの発症機序と治療標的まで】 (第2章)ここまでわかった炎症開始を司るDanger Signalの認識機序自己炎症性症候群の遺伝学インフラマソームと非インフラマソームによる病態,
実験医学, Vol.32, No.17, 2275-2279, 2014年11月. 安友康二 :
自己炎症性症候群と遺伝的素因,
炎症と免疫, Vol.22, No.5, 383-386, 2014年8月. 安友康二 :
【樹状細胞の機能制御】樹状細胞の分化・機能とNotchシグナル,
臨床免疫·アレルギー科, Vol.61, No.2, 119-123, 2014年2月. 安友康二, 北村明子 :
生殖細胞系列変異エクソーム解析による自己炎症疾患の遺伝的素因の解明免疫プロテアソームの機能低下が自己炎症疾患を惹起する,
医学のあゆみ, Vol.245, No.5, 445-450, 2013年4月.

(キーワード): 自己炎症疾患 / 免疫プロテアソーム / Japanese autoinflammatory syndrome with lipodystrophy (JASL)
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1523388080465388800

(CiNii: 1523388080465388800) 石舟智恵子, 安友康二 :
NotchによるPARP1活性化はB細胞特異的に腫瘍化を抑制する,
血液内科, Vol.63, No.6, 734-739, 2011年12月. 石舟智恵子, 安友康二 :
【T細胞機能の誘導と抑制】 Tリンパ球の恒常性維持とNotchシグナル,
臨床免疫·アレルギー科, Vol.55, No.5, 490-495, 2011年5月.

(キーワード): Notch / T cell / homeostasis / proliferation / differentiation
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1522825130330063872

(CiNii: 1522825130330063872) 安友康二 :
Jagged1によるコラーゲン誘導関節炎の制御,
臨床免疫·アレルギー科, Vol.53, No.2, 199-204, 2010年4月.

(キーワード): collagen-induced arthritis / T細胞 (T cell) / Notch / Jagged
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1521417755339609216

(CiNii: 1521417755339609216) 安友康二 :
【T細胞の機能と表面分子】 Notchシグナルによる細胞傷害性Tリンパ球機能制御,
臨床免疫·アレルギー科, Vol.53, No.6, 556-561, 2010年4月.

(キーワード): Notch / CTL / CD8
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1524232505543704704

(CiNii: 1524232505543704704) 前川洋一, AlamMuhammad Shamsul, 安友康二 :
【サイトカインによる免疫制御と疾患新たな産生細胞，新規サイトカイン，抗炎症因子と治療・創薬応用】注目されるサイトカインと関連疾患・新規細胞集団 IL-22の役割とその産生機序 Th17，Th22，NK22,
実験医学, Vol.28, No.12, 1965-1969, 2010年4月. 中島公平, 安友康二 :
【Th17細胞分化の誘導と抑制】 Th17細胞の分化とaryl hydrocarbon receptor,
臨床免疫·アレルギー科, Vol.54, No.4, 399-403, 2010年4月.

(キーワード): Th17 / aryl hydrocarbon receptor / IL-22
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1521417755834915328

(CiNii: 1521417755834915328) 安友康二 :
Notchリガンドによるコラーゲン誘導性関節炎の抑制とその機序,
炎症と免疫, Vol.19, No.1, 68-74, 2010年4月. 石舟智恵子, 安友康二 :
【樹状細胞による免疫制御と臨床応用 T細胞制御機構の理解から，樹状細胞療法の開発，自己免疫疾患・感染症の病態解明とその治療まで】樹状細胞の生物学と生理学(分化・サブセット活性化・動態) Notchシグナルと樹状細胞分化,
実験医学, Vol.26, No.20, 3169-3174, 2008年12月. 石舟智恵子, 安友康二 :
【制御性T細胞の多様性と臨床応用】微生物感染と制御性T細胞,
炎症と免疫, Vol.15, No.4, 437-442, 2007年7月.

講演・発表

Koji Yasutomo :
Cell death in pulmonary fibrosis,
Japan and Australia Meeting on Cell Death 2023, Melbourne, Aug. 2023. Koji Yasutomo :
Immunodeficiency and autoinflammation caused by dysfunction of immunoproteasomes,
JSICR/MMCB 2023, May 2023. Koji Yasutomo :
AFF genes as regulators for B and T cells,
Immunology seminar in Chulalongkorn University, Mar. 2023. Koji Yasutomo :
AFF genes as regulators for B and T cells,
12th International Symposium on Microbiology and Immunology, Feb. 2023. Shogo Miyamura, Ryo Oe, Takuya Nakahara, Shota Okada, Shuji Taue, Yu Tokizane, Takeo Minamikawa, Taka-aki Yano, Kunihiro Otsuka, Ayuko Sakane, Takuya Sasaki, Koji Yasutomo, Taira Kajisa and Takeshi Yasui :
Rapid detection of SARS- CoV-2 nucleocapsid protein antigen by dual- comb biosensing,
SPIE Biomedical Imaging and Sensing Conference 2022 (BISC2022), 250308, Taipei, Dec. 2022. MIYAMURA Shogo, Ryo Oe, Takuya Nakahara, Shota Okada, Taira Kajisa, Shuji Taue, Yu Tokizane, Takeo Minamikawa, Taka-aki Yano, Kunihiro Otsuka, Ayuko Sakane, Takuya Sasaki, Koji Yasutomo and Takeshi Yasui :
Dual-Comb Biosensing for Rapid Detection of SARS-CoV-2,
Conference on Lasers and Electro-Optics 2022 (CLEO2022), JTh6A.6, San Jose, May 2022.

(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-85139913953

(Elsevier: Scopus) Koji Yasutomo :
Heterogeneity and maintenance of intestinal intraepithelial TCRαβ+CD8αα+ T cells,
FIMSA2021, Busan, Nov. 2021. Koji Yasutomo :
Regulatory netoworks of memory T cells,
4th IIMVF symposium, Apr. 2019. Koji Yasutomo :
Genetics dissection of chronic inflammatory disorders,
FIMSA 2018, Bangkok, Nov. 2018. Koji Yasutomo :
Genetics dissection of familial inflammatory disorders,
Cold Spring Harbor Asia Conference on: Frontiers of Immunology in Health & Disease, Suzhou, China, Sep. 2018. Chieko Ishifune, Shin-ichi Tsukumo and Koji Yasutomo :
Notch signal controls the number of TCR+CD8+ intraepithelial lymphocytes via phospholipid asymmetry by maintaining flippase ATP8a2,
Australia-Japan Meeting on Cell Death, Tokyo, May 2018. Koji Yasutomo :
Dysregulated cell death on inflammatory disorders,
Australia-Japan Meeting on Cell Death, Tokyo, May 2018. Koji Yasutomo :
Genetic dissection of chronic inflammatory disorders,
ICIS 2017, Oct. 2017. Koji Yasutomo :
Notch and tumor immunity,
The 3rd International Conference Innovation on Cancer research and Regenerative Medicine, Sep. 2017. Chieko Ishifune, Yoichi Maekawa, Katsuto Hozumi and Koji Yasutomo :
Notch-STAT5b is central for the development of TCR alpha beta+ CD8 alpha alpha+ small intestinal intraepithelial lymphocytes,
16th International Congress of Immunology (ICI), Melbourne, Australia, Aug. 2016. Koji Yasutomo :
Notch and memory T cells,
The 3rd Symposium of International Immunological Memory and Vaccine Forum, Oct. 2015. Koji Yasutomo :
Dysregulated cell death and inflammatory disorders,
WEHI/Dying code symposium, Oct. 2015. Chieko Ishifune and Koji Yasutomo :
Notch-STAT5b signaling regulates the TCRalpha beta+ CD8alpha alpha+ intraepithelial lymphocytes in the small intestine,
17th International Congress of Mucosal Immunology, Berlin, Jul. 2015. Koji Yasutomo :
Pathophysiology of Autoinflammtory syndrome,
3rd Annual Symposium of Cellular Homeostasis, Jun. 2015. Koji Yasutomo :
Genetic analysis of autoinflammatory syndrome,
The 10th IMS-JSI International Symposium on Immunology, Jun. 2015. Koji Yasutomo :
Genetics analysis of autoinflammatory syndrome,
KAIST Immunology seminar, May 2015. Koji Yasutomo :
Notch regulates CD4 T cell memory T cells,
Annual Meeting of Korean Society for Biochemistry and Molecular Biology, May 2015. Koji Yasutomo :
Immunoproteasomes and diseases,
35th Naito Conference., Jul. 2013. Koji Yasutomo :
Genetics of autoinflammatory syndrome,
The 78th Meeting of the Japanese Society for Interferon and Cytokine Research, May 2013. Koji Yasutomo :
Genetic basis of inflammatory disorders.,
Frontiers in Immunology and Inflammation: from Molecules to Disease., Feb. 2013. Koji Yasutomo :
Notch provides metabolic signal for memory CD4+ T cells.,
International Immunological Memory and Vaccine Forum, Jan. 2013. Koji Yasutomo :
Notch provides metabolic signal for memory CD4+ T cells,
2nd Symposium on Immune Diseases and Regulation, Jan. 2013. Koji Yasutomo :
Genetic basis of autoinflammatory syndrome,
International Symposium on Genome Science Expanding Frontiers of Genome Science, Jan. 2013. Kazumi Okamura and Koji Yasutomo :
CHD-mediated T cell regulation,
Symposium of Genetic and epigenetic control of cell fate, Nov. 2012. Koji Yasutomo :
Genetic basis for inflammatory disorders,
12th International Endotoxin & Innate Immunity Society meeting., Oct. 2012. Chieko Ishifune and Koji Yasutomo :
Notch signaling is essential for the differentiation of CX3CR1 positive cells in lamina propria of the small intestine,
2012 International Symposium on Dendritic Cells., Daegu, Oct. 2012. Koji Yasutomo :
Notch-mediated immune responses,
Immunological seminar of Imperial College London, Sep. 2012. Takuya Kuramoto, Hisatsugu Goto, Atsushi Mitsuhashi, Sho Tabata, Hirohisa Ogawa, Hisanori Uehara, Atsuro Saijo, Souji Kakiuchi, Masaki Hanibuchi, Yoichi Maekawa, Koji Yasutomo, Shin-ichi Akiyama, Saburo Sone and Yasuhiko Nishioka :
Dll4-Fc, an inhibitor of Dll4-notch signaling, suppresses liver metastasis of small cell lung cancer cells through down-regulation of NF-kappa-B activity,
14th International Biennial Congress of the Metastasis Research Society, Brisbane, Sep. 2012. Akiko Kitamura and Koji Yasutomo :
Candidate genetic variations in an autosomal-dominant selective immunodeficiency syndrome,
International Symposium on Genome Science ``Expanding Frontiers of Genome Science'', Tokyo, May 2012. Takuya Kuramoto, Hisatsugu Goto, Atsushi Mitsuhashi, Sho Tabata, Hirohisa Ogawa, Hisanori Uehara, Seidai Sato, Souji Kakiuchi, Masaki Hanibuchi, Yoichi Maekawa, Koji Yasutomo, Shin-ichi Akiyama, Saburo Sone and Yasuhiko Nishioka :
Dll4-Fc, an inhibitor of Dll4-notch signaling, suppresses liver metastasis of small cell lung cancer cells through down-regulation of NF-kappa-B activity,
AACR Annual Meeting 2012, Chicago, Apr. 2012. Koji Yasutomo :
Genetic analysis of inflammatory disorders,
New Horizons of Immune systems, Feb. 2012. Koji Yasutomo and 丸山悟 :
Notch-mediated dendritic cells functions,
The Notch Meeting, Oct. 2011. Koji Yasutomo and 今大路治之 :
Efficient electrotransformation strategies of Bacteroides fragilis,
International Union of Microbiological Society 2011 Congress, Sep. 2011. Koji Yasutomo, 市村譲 and 今大路治之 :
A single tyrosine site-specific recombinase in Bacteroides fragilis, globally regulates the DNA inversions in susC/susD genes clusters,
International Union of Microbiological Society 2011 Congress, Sep. 2011. Koji Yasutomo :
Irradiation and plasmacytoid dendritic cell functions,
NIAID-RERF joint symposium, Aug. 2011. Akiko Kitamura and Koji Yasutomo :
Genome wide search for a candidate gene in idiopathic CD4+ T cell lymphocytopenia by combination of ANP-based homozygosity mapping and next generation sequencing,
60th Annual meeting of American society of human genetics, Hawaii, Nov. 2010. Yoichi Maekawa and Koji Yasutomo :
Notch controls T cell memory,
14th International Congress of Immunology, Kobe, Aug. 2010. N Morishima, X Mingli, Koji Yasutomo and I Mizoguchi :
IL-27 induces rapid up-regulation of Notch1 expression critical for IL-10 production in CD4+ T cells.,
14th International Congress of Immunology, Kobe, Aug. 2010. Koji Yasutomo, X Mingli, N Morishima and T Yoshimoto :
A protective role for IL-23 in acute hepatitis model by inducing IL-22 production,
14th International Congress of Immunology, Aug. 2010. Koji Yasutomo :
Irradiation and dendritic cell functions,
NIAID-RERF joint symposium, Kobe, Aug. 2010. Erkhembayar Shinebaatar, Junko Morimoto, Hiroyuki Kondo and Koji Yasutomo :
Dysfunction of proteasomes in T cells causes immunodeficiency,
第52回日本免疫学会学術集会, Jan. 2024. Rinna Koga, Junko Morimoto, Kunihiro Otsuka and Koji Yasutomo :
Proteasome dysfunction in adipocytes induces lipodystrophy and autoinflammation,
第52回日本免疫学会学術集会, Jan. 2024. Kunihiro Otsuka, Hiroyuki Kondo, Shin-ichi Tsukumo, Aya Ushio, Naozumi Ishimaru and Koji Yasutomo :
CD153+ CD4+ T cells and CD30+ cells exacerbate the autoimmune pathology in salivary glands of Sjögren's syndrome,
第52回日本免疫学会学術集会, Jan. 2024. Shin-ichi Tsukumo and Koji Yasutomo :
The functions of transcription elongation factor Cdk9 in T cells,
第52回日本免疫学会学術集会, Jan. 2024. 近藤博之, 岡部克生, 川阪安人, 大塚邦紘, 安友康二 :
インフルエンザウイルス肺炎の免疫応答におけるマルチプレックス時空間解析とそこから発見した組織修復性CD4陽性T細胞の解析,
第46回日本分子生物学会年会, 2023年12月. 大塚邦紘, 近藤博之, 九十九伸一, 牛尾綾, 永尾瑠佳, 青田桂子, 石丸直澄, 安友康二 :
シングルセル解析を基盤としたシェーグレン症候群の病態解明,
第31回日本シェーグレン症候群学会学術集会, 2023年9月. 安友康二 :
遺伝性疾患研究から探る慢性炎症の基盤メカニズム,
日本免疫学会免疫サマースクール2023, 2023年8月. 鈴木裕太, 宮崎崇之, 武藤洋樹, 久原健嗣, 向洋平, 渡隆爾, 佐藤晋也, 近藤啓太, 九十九伸一, 安友康二, 伊藤昌史, 塚原克平 :
mRNAワクチンの脂質ナノ粒子設計と凍結乾燥,
第 39 回日本 DDS 学会学術集会, 2023年7月. 鈴木裕太, 宮崎崇之, 武藤洋樹, 久原健嗣, 向洋平, 渡隆爾, 佐藤晋也, 近藤啓太, 九十九伸一, 安友康二, 伊藤昌史, 塚原克平 :
mRNAワクチンの脂質ナノ粒子設計と凍結乾燥,
第8回日本核酸医薬学会, 2023年7月. 藤岡啓介, 服部共樹, 漆原真樹, 安友康二 :
糸球体上皮細胞特異的CTCF遺伝子ノックアウトマウスにおける糸球体障害と腎内レニン・アンジオテンシン系活性化,
第58回日本小児腎臓病学会学術集会, 2023年6月. Thiranut Jaroonwitchawan, 有持秀喜, 安友康二 :
Roles of FXR in macrophage polarization,
第21回四国免疫フォーラム, 2023年6月. 大塚邦紘, 石丸直澄, 安友康二 :
CD153+ CD4+ T cellによるシェーグレン症候群の新たな発症機序の解明,
第5回口腔医科学フロンティア研究会, 2023年4月. 岡部克生, 大塚邦紘, 近藤博之, 安友康二 :
インフルエンザウイルス肺炎の免疫応答に関するマルチプレックス時空間解析,
第112回日本病理学会総会, 2023年4月. 大塚邦紘, 近藤博之, 九十九伸一, 新垣理恵子, 永尾瑠佳, 佐藤真美, 牛尾綾, 石丸直澄, 安友康二 :
CD153-CD30相互反応を介したシェーグレン症候群の病態形成機構の解明,
第112回日本病理学会総会, 2023年4月. 佐々木由紀, 安友康二 :
プロテアソーム機能低下と免疫発生・制御不全,
第6回日本免疫不全・自己炎症学会総会・学術集会シンポジウム「基礎研究」, 2023年2月. 宮村祥吾, 麻植凌, 仲原拓弥, 岡田昇太, 田上周路, 時実悠, 南川丈夫, 矢野隆章, 大塚邦紘, 坂根亜由子, 佐々木卓也, 安友康二, 加治佐平, 安井武史 :
デュアル光コムバイオセンシングによるSARS-CoV-2/NP抗原の迅速·高感度検出,
学術講演会第43回年次大会, E06-19p-IX-01, 2023年1月. 安友康二 :
抗体のクラススイッチを制御し微生物感染から生体を防御する分子の発見,
バイオインダストリー講演会宮田満のバイオ・アメイジング∼緊急対談:バイオのあの話題はこれからどうなる?!, 2022年12月. Kunihiro Otsuka, Shin-ichi Tsukumo, Rieko Arakaki, Mami Sato, 八木田秀雄, Naozumi Ishimaru and Koji Yasutomo :
CD153+ CD4+ T cells exacerbate the autoimmune pathology via the interaction with CD30+ cells in salivary glands in Sjögren's syndrome.,
第51回日本免疫学会学術集会, Dec. 2022. Chieko Ishifune and Koji Yasutomo :
Notch signal controls final differentiation of TCRγδ+CD8αα+ intraepithelial lymphocytes in the small intestine,
第51回日本免疫学会学術集会, Dec. 2022. 近藤博之, 九十九伸一, 大塚邦紘, 安友康二 :
Markers of memory CD8 T cells depicting the effect of the BNT162b2 mRNA COVID-19 vaccine in Japan,
第45回日本分子生物学会年会, 2022年11月. 安友康二 :
プロテアソーム機能不全と自己炎症疾患,
第54回小児感染症学会総会・学術集会シンポジウム「自己炎症性疾患の最新知見」, 2022年11月. 大塚邦紘, 近藤博之, 九十九伸一, 新垣理恵子, 佐藤真美, 常松貴明, 石丸直澄, 安友康二 :
シングルセルRNA-seqとマルチプレックスSpatial解析を基盤としたシェーグレン症候群の標的臓器微小環境変化の解明,
第33回日本臨床口腔病理学会, 2022年9月. 宮村祥吾, 麻植凌, 仲原拓弥, 岡田昇太, 加治佐平, 時実悠, 南川丈夫, 矢野隆章, 田上周路, 大塚邦紘, 坂根亜由子, 佐々木卓也, 安友康二, 安井武史 :
新型コロナウイルスNタンパク抗原のデュアル光コム・バイオセンシング,
第83回応用物理学会秋季学術講演会, 21a-A200-4, 2022年9月. 大塚邦紘, 九十九伸一, 近藤博之, 佐藤真美, 俵宏彰, 常松貴明, 石丸直澄, 安友康二 :
シングルセルRNA-seqで紐解くシェーグレン症候群モデルに特徴的に出現するT細胞集団の解析,
第64回歯科基礎医学会学術大会, 2022年9月. 安友康二 :
慢性炎症の基盤メカニズムを紐解く鍵の探索,
日本免疫学会免疫サマースクール2022, 2022年8月. 近藤博之, 大塚邦紘, 九十九伸一, 安友康二 :
日本における新型SARS-CoV-2 mRNAワクチンBNT162b2の効果を示すメモリーCD8T細胞マーカー,
第20回四国免疫フォーラム, 2022年6月. 大塚邦紘, 九十九伸一, 近藤博之, 新垣理恵子, 石丸直澄, 安友康二 :
シングルセルRNA-seqで紐解くシェーグレン症候群モデルに特徴的に出現するT細胞集団の解析,
第111回日本病理学会総会, 2022年4月. 細山田翔太, 九十九伸一, 加治佐平, 安友康二, 安井武史 :
プラズモニクスバイオセンサを用いたエクソソーム中のマイクロRNA断片の超高感度検出,
第69回応用物理学会春季学術講演会, 24p-E104-2, 2022年3月. Kunihiro Otsuka, Shin-ichi Tsukumo, Rieko Arakaki, Mami Sato, Hideo Yagita, Naozumi Ishimaru and Koji Yasutomo :
Single-cell RNA sequencing reveals accumulation of CD4 and CD8 T cells with unique phenotypes in salivary glands of Sjögren's syndrome model mice,
第50回日本免疫学会学術集会, Dec. 2021. Yuki Sasaki, Hideki Arimochi, Kunihiro Otsuka, Hiroyuki Kondo, Shin-ichi Tsukumo and Koji Yasutomo :
Blockade of the CXCR3-CXCL10 axis ameliorates inflammatory responses caused by immunoproteasome dysfunctions,
第50回日本免疫学会学術集会, Dec. 2021. Shin-ichi Tsukumo, Yoichi Maekawa, Fujio Keishi and Koji Yasutomo :
AFF3 regulates class switch recombination by enhacing mutagenesis of switch region,
第50回日本免疫学会学術集会, Dec. 2021. 仲原拓弥, 麻植凌, 加治佐平, 時実悠, 南川丈夫, 田上周路, 大塚邦紘, 坂根亜由子, 安友康二, 佐々木卓也, 安井武史 :
屈折率センシング光コムを用いたバイオセンシングに関する検討(4)~新型コロナウイルス(SARS-CoV-2)の検出~,
第82回応用物理学会秋季学術講演会予稿集, 13p-N322-7, 2021年9月. 南川丈夫, 駒貴明, 鈴木昭浩, 永松謙太郎, 安井武史, 安友康二, 野間口雅子 :
深紫外LEDを用いた新型コロナウイルスの不活化,
電気学会光・量子デバイス研究会「パワー光源システム技術研究会」, 2021年7月. 安友康二 :
肺線維症のゲノム解析から紐解く肺線維化の分子メカニズム,
第48回日本毒性学会学術年会シンポジウム;肺毒性の分子背景, 2021年7月. Boonchan Michittra, Hideki Arimochi, Kunihiro Otsuka, Tomoko Kobayashi, Hisanori Uehara, Jaroonwitchawan Thiranut, Yuki Sasaki, Shin-ichi Tsukumo and Koji Yasutomo :
Deficiency in Ripk3 or Mlkl exacerbates acute pancreatitis with increased apoptosis of acinar cell,
第19回四国免疫フォーラム, Jun. 2021. 加治佐平, 矢野隆章, 大塚邦紘, 九十九伸一, 坂根亜由子, 駒貴明, 野間口雅子, 安友康二, 佐々木卓也, 安井武史 :
SARS-CoV-2由来RNAの高感度検出に向けたプラズモニックバイオセンサ,
第68回応用物理学会春季学術講演会予稿集, 16p-Z22-13, 2021年3月. 安友康二 :
炎症性疾患の基礎医学,
第123回日本小児科学会教育講演, 2020年8月. Koji Yasutomo :
Brief introduction of Interferonopathy,
第三回日本自己炎症・免疫不全学会「シンポジウム; Interferonopathy」, Feb. 2020. 安友康二 :
ゲノム解析から紐解く肺線維症の病態と創薬標的,
Acdemic Forum on Pulmonary Fibrosis, 2020年2月. 安友康二 :
慢性炎症病態をゲノム解析から紐解く,
茨城血液免疫セミナー, 2020年1月. Shin-ichi Tsukumo, Yoichi Maekawa and Koji Yasutomo :
Aff3 is required for the class switching of IgG2c, IgG1 and IgG3 in a B cell-intrinsic manner,
第48回日本免疫学会学術集会, Dec. 2019. 安友康二 :
慢性炎症とゲノム解析,
神戸大学大学院セミナー, 2019年10月. 安友康二 :
ゲノム解析から自己免疫および自己炎症病態を紐解く,
第28回日本シェーグレン症候群学会, 2019年9月. 安友康二 :
慢性炎症をゲノム解析から紐解く,
2019先端医学研究交流セミナー in Matsuyama, 2019年9月. Chieko Ishifune and Koji Yasutomo :
Notch-mediated final differantiation of TCRgd+CD8aa+ intraepithelial lymphocyte in the small intestine,
第47回日本免疫学会学術集会, Dec. 2018. Shin-ichi Tsukumo and Koji Yasutomo :
Transcriptional elongation factor Aff3 regulates class switching of antibody in B cells,
第47回日本免疫学会学術集会, Dec. 2018. 九十九伸一, 安友康二 :
自己免疫疾患におけるAFFファミリーの役割,
第33回自己免疫研究会, 2018年7月. Koji Yasutomo :
Notch and immune disorders,
京都大学医学研究科大学院教育コース「免疫・アレルギー・感染コース」, Jan. 2018. Chieko Ishifune, Shin-ichi Tsukumo and Koji Yasutomo :
Notch signal controls the number of TCRab+CD8aa+ intraepithelial lymphocytes via phospholipid asymmetry by maintaining flippase ATP8a2,
第46回日本免疫学会学術集会, Dec. 2017. Hideki Arimochi and Koji Yasutomo :
Roles of FXR in macrophage differentiation,
第46回日本免疫学会学術集会, Dec. 2017. 安友康二 :
炎症性病態をゲノムから紐解く,
第26回日本Cell death学会, 2017年7月. 安友康二 :
ゲノム機能学からみた炎症・免疫,
第38回日本炎症・再生医学会, 2017年7月. 石舟智恵子, 安友康二 :
Notchシグナルによる細胞膜リン脂質の極性制御を介した腸管上皮間リンパ球の制御,
第32回自己免疫研究会, 2017年7月. 佐々木由紀, 安友康二 :
NLRC4ミスセンス変異誘導性関節炎の解析,
第三回日本骨免疫学会, 2017年6月. Koji Yasutomo :
Notch and Immune response,
第45回日本免疫学会学術集会, Dec. 2016. Hideki Arimochi, Yuki Sasaki and Koji Yasutomo :
Dysfunction of PSMB8 suppresses the maturation and anti-bacterial responses of adipocytes,
第45回日本免疫学会学術集会, Dec. 2016. Yuki Sasaki, Hideki Arimochi and Koji Yasutomo :
Cytokines regulation of autoinflammation caused by dysfunctions of immunoproteasomes,
第45回日本免疫学会学術集会, Dec. 2016. Chieko Ishifune, Yoichi Maekawa and Koji Yasutomo :
Notch-Rbpj regulates Eat-Me singal of TCRab+CD8aa+ intraepithelial lymphocytes by controlling fllipase ATP8a2,
第45回日本免疫学会学術集会, Dec. 2016. 安友康二 :
Notchシグナルによる免疫制御,
第14回 1型糖尿病研究会, 2016年11月. N Doi, 石舟智恵子, 安友康二, T Miura, Y Sakai, K Fujimoto, S Harada, K Yoshimura, 野間口雅子, 足立昭夫 :
アカゲザル病原性HIV-1の個体内複製と病原性:腸管由来細胞での感染評価技術の確立に向けて,
第64回日本ウイルス学会学術集会, 2016年10月. 安友康二 :
細胞死機能異常と炎症病態,
日本Cell Death学会, 2016年9月. 安友康二 :
遺伝解析から慢性炎症病態を紐解く,
第44回日本臨床免疫学会総会, 2016年9月. 安友康二 :
糖鎖修飾とNotch,
第35回日本糖質学会年会, 2016年9月. Shin-ichi Tsukumo and Koji Yasutomo :
DNA結合因子 CTCFのCD4 T細胞における役割,
第31回自己免疫研究会, Jul. 2016. 安友康二 :
慢性炎症と遺伝解析,
大阪大学微生物病研究所アドバンストセミナー, 2016年6月. 安友康二 :
遺伝解析から炎症病態を紐解く,
皮膚免疫研究会, 2016年4月. 安友康二 :
自己炎症性疾患のゲノム解析,
第17回分子内分泌代謝学セミナー, 2015年12月. 安友康二 :
慢性炎症のモデル動物,
第9回 In vivo実験医学シンポジウム, 2015年12月. Chieko Ishifune, Yoichi Maekawa, Katsuto Hozumi and Koji Yasutomo :
Notch-STAT5b is central for the differentiation of TCR alpha beta+ CD8 alpha alpha+ intraepithelial lymphocytes,
第44回日本免疫学会学術集会, Nov. 2015. 石舟智恵子 and Koji Yasutomo :
Notch-STAT5b is central for the differentiation of TCRab+CD8aa+ intraepithelial lymphocytes,
第44回日本免疫学会学術集会, Nov. 2015. Shin-ichi Tsukumo and Koji Yasutomo :
Function of Notch-Rbpj pathway in naive CD8 T cells,
第44回日本免疫学会学術集会, Nov. 2015. Jun Nishida and Koji Yasutomo :
Roles of receptor-like protein tyrosine phosphatase kappa to functional maintenance of Payers patch,
第44回日本免疫学会学術集会, Nov. 2015. 安友康二 :
慢性炎症のゲノム解析,
Wakoワークショップ, 2015年11月. 安友康二 :
NotchによるT細胞制御,
第二回T cell seminar, 2015年10月. 安友康二 :
慢性炎症性疾患のゲノム解析,
千葉大学・筑波大学膠原病セミナー, 2015年6月. 安友康二 :
自己炎症性疾患の病態解析,
金沢小児科・皮膚科免疫アレルギー研究会, 2015年6月. 安友康二 :
自己炎症性疾患のゲノム解析,
岐阜大学免疫セミナー, 2015年6月. Shin-ichi Tsukumo and Koji Yasutomo :
Notch-Rbpj target genes for maintaining naive and memory T cells,
第43回日本免疫学会学術集会, Dec. 2014. Chieko Ishifune, Maekawa Yoichi, Katsuto Hozumi and Koji Yasutomo :
Notch regulates the differentiation of TCRalpha beta+ CD8alpha alpha+ intraepithelial lymphocytes in the small intestine through Stat5b signaling,
第43回日本免疫学会学術集会, Dec. 2014. 安友康二 :
記憶T細胞の生死を決める分子基盤,
千葉大学リーディング大学院セミナー, 2014年11月. 安友康二 :
細胞死制御異常によるヒト遺伝性疾患の病態解明,
新学術領域ダイイングコードシンポジウム, 2014年11月. 安友康二 :
生体を制御するセンサー群,
第87回日本生化学会大会シンポジウム, 2014年10月. 安友康二 :
炎症性疾患の免疫遺伝学,
第2回 Bench to Bedセミナー, 2014年7月. 安友康二 :
自己免疫疾患の遺伝学,
第一回自己免疫研究会, 2014年7月. 安友康二 :
炎症性疾患の免疫遺伝学,
第35回日本炎症・再生医学会シンポジウム, 2014年7月. 安友康二 :
炎症性疾患の遺伝学,
第79回日本インターフェロン・サイトカイン学会学術集会シンポジウム, 2014年6月. 安友康二 :
自己炎症性疾患の遺伝学,
第14回日本抗加齢医学会総会シンポジウム, 2014年6月. 安友康二 :
自己炎症性疾患の免疫遺伝学,
第117回日本小児科学会学術集会, 2014年4月. Jun Nishida and Koji Yasutomo :
Roles of receptor-like protein tyrosine phosphatase kappa in T cell development and functions,
第42回日本免疫学会学術集会, Dec. 2013. Chieko Ishifune, Yoichi Maekawa, Katsuto Hozumi and Koji Yasutomo :
Notch signaling regulates the differentiation of TCR alpha beta+ CD8alpha alpha+ Thy1- intraepithelial lymphocytes in the small intestine,
第42回日本免疫学会学術集会, Dec. 2013. Koji Yasutomo :
Genetics of autoinflammatory syndrome,
第42回日本免疫学会学術集会, Dec. 2013. Koji Yasutomo :
Notch controls memory CD4+ T cells and intestinal intraepithelila T cells,
第36回日本分子生物学会シンポジウム「免疫記憶」, Dec. 2013. 安友康二 :
炎症性疾患の遺伝学,
第9回ケミカルメディエーター研究会, 2013年10月. 安友康二 :
炎症性疾患の遺伝学,
京都大学ウイルス研究所講演会, 2013年9月. 安友康二 :
免疫プロテアソーム機能破綻による疾病,
阿蘇シンポジウム, 2013年8月. 安友康二 :
自己炎症性疾患のゲノム構造,
BLOOD MASTER;自己炎症性疾患, 2013年6月. 安友康二 :
炎症性疾患のゲノム構造の解読,
第112回日本皮膚科学会・モーニングセミナー, 2013年6月. 安友康二 :
CD98hc regulates the development of experimental colitis by differentially controlling inducible and naturally occurring regulatory T cells,
第12回四国免疫フォーラム, 2013年6月. 安友康二 :
免疫プロテアソーム機能異常による炎症応答の分子基盤,
日本生化学学会シンポジウム, 2012年12月. 前川洋一, 安友康二 :
Notch regulates memory CD4+ T cells.,
日本免疫学会総会, 2012年12月. Chieko Ishifune, Yoichi Maekawa and Koji Yasutomo :
Notch signaling is essential for the differentiation of CX3CR1+ cell in lamina propria of the small intestine,
第41回日本免疫学会総会, Dec. 2012. 中島公平, 安友康二 :
Aryl hydrocarbon receptor nuclear translocator as a regulator of the differentiation of intestinal intraepithelial CD8 T cells.,
日本免疫学会総会·学術集会記録, 2012年12月. 丸山悟, 安友康二 :
Notch-RBP-J signaling in dendritic cells negatively regulates T cell-mediated immune responses.,
日本免疫学会総会, 2012年12月. Koji Yasutomo :
Notch provides metabolic signals in memory CD4+ T cells,
日本免疫学会, Dec. 2012. 安友康二 :
PSMB8の変異による脂肪萎縮,
第17回アディポサイエンス研究会シンポジウム, 2012年8月. 倉本卓哉, 後東久嗣, 三橋惇志, 田畑祥, 上原久典, 西條敦郎, 柿内聡司, 埴淵昌毅, 前川洋一, 安友康二, 秋山伸一, 曽根三郎, 西岡安彦 :
小細胞肺がん転移におけるDll4-Notchシグナルの臓器特異性に関する検討,
第21回日本がん転移学会学術集会・総会, 2012年7月. 安友康二 :
自己炎症性疾患の新展開,
第110回西讃小児科医会特別講演, 2012年6月. 岡村和美, 安友康二 :
CHD1T,
)第11回四国免疫フォーラム, 2012年6月. 中島公平, 安友康二 :
Arnt,
第11回四国免疫フォーラム, 2012年6月. 安友康二 :
Notchシグナルによる寄生虫感染制御,
日本寄生虫学会シンポジウム, 2012年3月. 安友康二, 澤田明久, 大賀正一, 石井榮一 :
家族性血球貪食性リンパ組織球症に対する減強度前処置による臍帯血移植の可能性:日本造血細胞移植学会データベースに基づく解析,
血球貪食症候群研究会, 2012年3月. 安友康二 :
稀少遺伝性疾患のゲノム解析,
沖縄小児科学会特別講演, 2012年3月. 安友康二 :
炎症応答の分子ネットワーク,
皮膚科リサーチセミナー特別講演, 2012年1月. Koji Yasutomo and 前川洋一 :
A new autoinflammatory syndrome,
2011, Nov. 2011. 安友康二, 石舟智恵子 :
Notchシグナルによる樹状細胞分化制御,
日本免疫学会総会, 2011年11月. 安友康二, 栗原健士 :
CD98シグナルによるTリンパ球活性化制御,
日本免疫学会総会, 2011年11月. 練高建, 安友康二 :
抗CD98抗体による1型糖尿病治療法の開発,
日本免疫学会総会, 2011年11月. Koji Yasutomo and Yoichi Maekawa :
A new autoinflammatory syndrome,
2011年度日本免疫学会シンポジウム, Nov. 2011. 安友康二 :
炎症応答の分子ネットワーク,
皮膚科最新医療研究会特別講演, 2011年10月. 北村明子, 安友康二 :
反復する発熱と脂肪萎縮を特徴とする症候群の原因遺伝子解明,
第114回日本小児科学会学術集会, 2011年8月. 安友康二 :
Notchシグナルによる免疫調節,
日本免疫学会サマースクール招待講演, 2011年7月. 倉本卓哉, 後東久嗣, 柿内聡司, 小川博久, 三橋惇志, 田畑祥, 佐藤正大, 前川洋一, 安友康二, 西岡安彦, 秋山伸一, 曽根三郎 :
小細胞肺がん転移におけるDLL4-Notchシグナルの臓器特異性に関する検討,
第15回日本がん分子標的治療学会学術集会, 2011年6月. 栗原健士, 前川洋一, 安友康二 :
Tリンパ球に発現するCD98によるLeishmania major感染制御,
第4回原虫免疫研究会, 2011年1月. 安友康二 :
免疫難病の治療法の開発,
16. バイオインダストリー産学連携セミナー, 2010年12月. 丸山悟史, 石舟智恵子, 前川洋一, 安友康二 :
樹状細胞のNotchシグナルはTリンパ球活性化を負に制御する,
第5回Notch研究会, 2010年11月. 安友康二 :
炎症応答の分子基盤,
四国4大学皮膚科研究会, 2010年7月. 倉本卓哉, 後東久嗣, 小川博久, 三橋惇志, 前川洋一, 安友康二, 柿内聡司, 西岡安彦, 曽根三郎 :
小細胞肺がん転移におけるDLL4-Notchシグナルの臓器特異性に関する検討,
第14回日本がん分子標的治療学会学術集会, 2010年7月. 栗原健士, 安友康二 :
CD98による免疫制御,
第9回四国免疫フォーラム, 2010年6月. 前川洋一, 安友康二 :
Notchシグナルによるメモリー細胞応答機構,
京都T細胞カンファレンス, 2010年6月. 前川洋一, 安友康二 :
Notchシグナルによる寄生虫感染制御,
日本寄生虫学会, 2010年5月.

研究会・報告書: 渋谷雅之, 木戸博, 林良夫, 根本尚夫, 佐野茂樹, 安友康二, 東博之, 西岡安彦, 寺尾純二, 二川健, 三澤弘明, 松尾繁樹, 馬場嘉信, 松本耕三, 三好弘一, 曽根三郎 :
徳島大学先端医療開発研究センター設置準備室成果報告書,
2002年12月.

特許: 研究者総覧に該当データはありませんでした。
作品: 研究者総覧に該当データはありませんでした。
補助金・競争的資金: 脂肪由来幹細胞ADSCから誘導した肝細胞様細胞HLCの免疫原性獲得に関する研究 (研究課題/領域番号: 23K08028 )
遺伝性炎症性疾患から紐解く自己タンパク過剰蓄積を感知する分子機構の解明 (研究課題/領域番号: 22H05188 )
生体防御における自己認識の「功」と「罪」 (研究課題/領域番号: 22H05182 )
自己脂肪由来インスリン産生細胞自家移植における抗原性発現と細胞運命の研究 (研究課題/領域番号: 22K08734 )
オルガノイドを用いた脂肪由来幹細胞からの超高機能肝細胞様細胞の確立 (研究課題/領域番号: 22H03136 )
新規動物モデルを用いた肺線維症の発症機構の解明 (研究課題/領域番号: 21H04819 )
非アルコール性脂肪肝炎における肝再生機能不全の解明と統合的治療法の開発 (研究課題/領域番号: 18H02871 )
日豪細胞死研究協議会を核とした細胞死研究国際コミュニティの形成 (研究課題/領域番号: 15K21753 )
Notchシグナルによる小腸上皮間リンパ球の制御を介した腸管恒常性維持機構の解明 (研究課題/領域番号: 15K19131 )
細胞死制御異常によるヒト遺伝性疾患の病態解明 (研究課題/領域番号: 26110008 )
細胞死を起点とする生体制御ネットワークの解明 (研究課題/領域番号: 26110001 )
肝星細胞による加齢肝の肝再生能不全プロセスの解明と治療法の開発 (研究課題/領域番号: 26293288 )
ヒト免疫系の制御機構解明を目指した小児免疫不全症の分子病態研究 (研究課題/領域番号: 26253063 )
ＣＨＤによるクロマチン構造制御が規定する細胞運命 (研究課題/領域番号: 23118521 )
ヒト脂肪由来幹細胞を用いた膵島移植における免疫寛容に関する研究 (研究課題/領域番号: 23592010 )
調節性Ｔ細胞制御による放射線療法後遠隔転移の抑制法に関する研究 (研究課題/領域番号: 23591935 )
加齢グラフト部分肝移植における機能不全の解明と新たな治療法の開発 (研究課題/領域番号: 23390324 )
免疫系の恒常性維持および破綻機構の解明に基づく自己免疫疾患の治療法開発 (研究課題/領域番号: 20679005 )
脂肪肝グラフト部分肝移植における機能不全の解明と統合的治療法の開発 (研究課題/領域番号: 20390359 )
異なるリガンド環境下において免疫細胞の恒常性を維持する分子基盤 (研究課題/領域番号: 20057018 )
調節性T細胞の制御による新しい肝移植後肝癌再発予防法の開発 (研究課題/領域番号: 19591484 )
Notchシグナルによる抗寄生虫応答機構の解明 (研究課題/領域番号: 19041052 )
膵島移植におけるノッチリガンドを用いた新たな免疫寛容誘導の開発 (研究課題/領域番号: 18591414 )
異なるリガンド環境におけるTリンパ球応答の分子基盤 (研究課題/領域番号: 18060031 )
Notchリガンドによる抗腫瘍免疫療法の開発 (研究課題/領域番号: 18015035 )
大腸癌肝転移成立における調節性T細胞の基礎的解析 (研究課題/領域番号: 17591407 )
NotchシグナルによるTリンパ球活性化制御機構の解明 (研究課題/領域番号: 17047027 )
Notch分子の糖鎖修飾によるT細胞分化への影響 (研究課題/領域番号: 17046013 )
Notchリガンドを用いた新規癌免疫療法の開発 (研究課題/領域番号: 17016052 )
Notch分子によるヘルパーTリンパ球分化・活性化制御機構の解明 (研究課題/領域番号: 16017271 )
NotchシステムによるTリンパ球活性化制御機構の解明とその臨床応用 (研究課題/領域番号: 15689016 )
Jagged1を制御することによる癌免疫の増強に関する研究 (研究課題/領域番号: 15025253 )
Tリンパ球の生死を規定する分子機構の解明 (研究課題/領域番号: 14033233 )
制御性T細胞を用いた抗腫瘍免疫の増強効果に関する研究 (研究課題/領域番号: 14030061 )
Notch-3によるヘルパーT細胞分化修飾機構の解明 (研究課題/領域番号: 13226083 )
研究者番号（30333511）による検索

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2024年4月26日更新

専門分野・研究分野: 免疫学 (Immunology)
小児科学 (Pediatrics)
膠原病学 (Rheumatology)
所属学会・所属協会: 日本免疫学会
日本寄生虫学会
日本小児科学会
日本腎臓病学会
京都T細胞カンファレンス
四国免疫フォーラム
The American Association of Immunologists
原虫免疫研究会
日本人類遺伝学会
日本リウマチ学会
American Society for Clinical Investigattion
日本小児リウマチ学会
委員歴・役員歴: 日本免疫学会 (評議員)
日本寄生虫学会 (評議員)
日本小児科学会 (専門医)
日本腎臓病学会 (専門医)
京都T細胞カンファレンス (運営委員)
四国免疫フォーラム (代表世話人)
The American Association of Immunologists (会員)
原虫免疫研究会 (代表世話人)
American Society for Clinical Investigattion (Foreign Associate)
受賞: 2006年12月, 日本免疫学会・研究奨励賞 (日本免疫学会)
2014年12月, 日本免疫学会賞 (日本免疫学会)
2015年5月, ノバルティス・リウマチ医学賞 (日本リウマチ財団)
2016年4月, Elected member (American Society of Clinical Investigation)
2021年1月, 小児医学川野賞 (川野小児医学奨学財団)
2022年4月, 科学技術分野の文部科学大臣表彰科学技術賞(研究部門) (文部科学省)
活動: NPO法人 SOMRET (理事)
放射線影響研究所 (顧問 [2011年4月〜2016年3月])
Immune Network (Associate Editor (2011-present))
国立研究開発法人日本医療研究開発機構 (革新的先端研究開発支援事業インキュベートタイプ(LEAP)課題評価委員会委員 [2016年4月〜2017年3月])
Dutch Cancer Society (グラント評価委員)
徳島県総合特区協議会協議委員 ( [2018年4月〜2024年3月])
とくしま『健幸』イノベーション推進協議会本部研究統括 ( [2018年4月〜2019年3月])
新エネルギー・産業技術総合開発機構(NEDO) ((審査評価レビュアー)(2005-現在))
Netherlands Organisation for Scientific Research;Grant reviewer(2011∼現在)
Medical Research Council; grant reviewer (2014∼現在)
University of Lisbon;研究評価委員(2020∼現在)
Frontiers in Immunology; Reviewing editor(2010∼現在)
Research Advisory committee member for post doctral fellows, Seoul National University College of Medicine ( [2020年〜2024年])
国立研究開発法人日本医療研究開発機構 (革新的先端研究開発支援事業プログラムオフィサー [2022年〜2029年])
国立研究開発法人日本医療研究開発機構 (老化メカニズムの解明・制御プロジェクト事後評価委員 [2021年])
独立行政法人科学技術振興機構 (A-STEP専門委員)
日本学術会議 (連携会員 [2017年10月〜2023年9月])
日本学術会議 (会員 [2023年10月〜2029年9月])

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Ｊグローバル

Jグローバル最終確認日: 2024/4/27 01:30
氏名（漢字）: 安友康二
氏名（フリガナ）: ヤストモコウジ
氏名（英字）: Yasutomo Koji
所属機関: 徳島大学教授

リサーチマップ

researchmap最終確認日: 2024/4/21 02:22
氏名（漢字）: 安友康二
氏名（フリガナ）: ヤストモコウジ
氏名（英字）: Yasutomo Koji
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登録日時: 2010/10/18 00:00
更新日時: 2024/4/3 15:01
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所属: 徳島大学
部署: 大学院医歯薬学研究部生体防御医学
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学位: 医学博士
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研究者番号: 30333511

所属（現在）: 2024/4/1 : 徳島大学, 大学院医歯薬学研究部(医学域), 教授

所属（過去の研究課題 情報に基づく）*注記: 2018/4/1 – 2023/4/1 : 徳島大学, 大学院医歯薬学研究部(医学域), 教授
2016/4/1 – 2017/4/1 : 徳島大学, 大学院医歯薬学研究部(医学系), 教授
2015/4/1 – 2017/4/1 : 徳島大学, 大学院医歯薬学研究部, 教授
2014/4/1 : 徳島大学, 大学院医ヘルスバイオサイエンス研究部, 教授
2011/4/1 – 2014/4/1 : 徳島大学, ヘルスバイオサイエンス研究部, 教授
2013/4/1 : 徳島大学, 大学院ヘルスバイオサイエンス研究部, 教授
2004/4/1 – 2012/4/1 : 徳島大学, 大学院・ヘルスバイオサイエンス研究部, 教授
2008/4/1 : 徳島大学, 大学院・ヘルスバイオサイエンス部, 教授
2006/4/1 : 徳島大学, 徳島大学・大学院ヘルスバイオサイエンス研究部, 教授
2005/4/1 – 2006/4/1 : 徳島大学, 大学院ヘルスバイオサイエンス研究部, 教授
2004/4/1 : 徳島大学, ヘルスバイオサイエンス研究部, 教授
2001/4/1 – 2003/4/1 : 徳島大学, 医学部, 教授

審査区分/研究分野

研究代表者

生物系 / 医歯薬学 / 内科系臨床医学 / 小児科学
生物系
中区分52:内科学一般およびその関連分野
学術変革領域研究区分(Ⅲ)

研究代表者以外

生物系 / 医歯薬学 / 外科系臨床医学 / 外科学一般
生物系 / 医歯薬学 / 外科系臨床医学 / 消化器外科学
生物系 / 医歯薬学 / 基礎医学 / 免疫学
生物系
小区分55010:外科学一般および小児外科学関連
学術変革領域研究区分(Ⅲ)

キーワード

研究代表者

ヘルパーT細胞 / Notch / CD4 / インターロイキン12 / レトロウイルスベクター / 癌 / 免疫学 / 細胞・組織 / 病理学 / 内科 / アポトーシス / T細胞 / 不死化 / 免疫寛容 / シグナル伝達 / 発生・分化 / 免疫療法 / 樹状細胞 / Tリンパ球 / Jagged / CD8 / 膠原病 / 腫瘍免疫 / fringe / 糖鎖 / 細胞療法 / 癌免疫応答 / 細胞傷害性機能 / 免疫応答 / リガンド結合 / リガンド / 原虫感染 / 寄生虫感染 / 免疫回避 / 宿主寄生体相互作用 / 自己免疫疾患 / ゲノム解析 / 自己免疫 / 転写調節 / 細胞治療 / 分子標的治療 / ヘリカーゼ / CHD / クロマチン / 細胞運命決定 / 慢性炎症 / 遺伝学 / 肺線維症 / 蕁麻疹 / 細胞死 / 遺伝性疾患 / パイロプトーシス / ネクロプトーシス / 炎症 / 遺伝病 / エクソーム / NLRC4 / サイトカイン / 免疫疾患 / 免疫異常 / 免疫不全 / 遺伝解析 / 細菌感染 / B細胞 / 遺伝子改変マウス / ウイルス感染 / エクソーム解析 / プロテアソーム / 免疫プロテアソーム / 自己抗原

研究代表者以外

Tリンパ球 / 細胞分化 / 細胞系譜決定 / Th1 / Th2 / Notch / CTL / 細胞内寄生性病原体 / 移植外科 / 肝細胞癌 / 調節性T 細胞 / 調節性T細胞 / 肝不全 / 肝移植 / 脂肪肝 / 肝虚血再灌流傷害 / 虚血再潅流傷害 / 大量肝切除術 / 加齢肝 / 幹細胞 / 加齢遺伝子 / マイクロダイアライシス / 直腸癌 / 術前放射線治療 / Foxp3 / Notchシグナル / Delta / Jagged / CD47 / THBS-1 / 調節性T細胞 Treg / 膵島移植 / 拒絶反応 / 脂肪由来幹細胞 / 免疫寛容 / trophic効果 / homing効果 / OP9DL1細胞 / VEGF signal / 脂肪由来幹細胞（ADSC） / helper T細胞 / suppressor T細胞 / 細胞死 / 生体応答 / 炎症 / 再生 / 肝星細胞 / 肝再生 / 肝転移 / NK細胞 / 脾摘 / 制御性T細胞 / 大腸癌 / FoxP3 / CD4+CD25+ Tcell / 免疫応答 / 宿側 / FACS解析 / liver metastasis / regulatory T cell / NK cell / splenectomy / Jagged1 / Delta1 / 免疫抑制作用 / Jaeeed1 / Japped 1 / Deltal / immunosupression / 免疫 / 上皮間リンパ球 / フリッパーセ / マクロファージ / フリッパーゼ / 腸管上皮間リンパ球 / 脂肪肝炎 / 肝微小環境 / 脂肪組織 / 腸肝関連 / NASH / NAFLD / 腸管関連 / 免疫センサー / 自己分子 / オルガノイド / 超高機能肝細胞様細胞 / 肝細胞様細胞 / HLC / 脂肪由来間葉系幹細胞 / 免疫原性 / insulin-producing cell / 1型糖尿病 / 自己免疫 / 細胞運命

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安友 康二

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研究代表者以外

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安友康二