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冨永辰也

徳島大学

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2024年5月3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: tominaga.tatsuya@tokushima-u.ac.jp
学歴: 2005/3: 徳島大学大学院医学研究科医科学専攻修士課程修了
2012/3: 徳島大学大学院医科学教育部医学専攻博士課程
学位: 博士(医学) (徳島大学) (2012年3月)
職歴・経歴: 2009/7: 徳島大学助教, 大学院ヘルスバイオサイエンス研究部 (-2015.3.)
2015/4: 徳島大学助教, 大学院医歯薬学研究部 (-2017.3.)
2017/4: 徳島大学准教授, 大学院医歯薬学研究部 (-2023.3.)
2023/4: 徳島大学教授, 大学院医歯薬学研究部

専門分野・研究分野: 保健学 (Health Studies)
腎臓病学 (Nephrology)

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2024年5月3日更新

専門分野・研究分野: 保健学 (Health Studies)
腎臓病学 (Nephrology)
担当経験のある授業科目: SIH道場~アクティブ・ラーニング入門~(医・保健) (共通教育)
チーム医療特論 (大学院)
健康食品法規 (学部)
先端保健医療学 (大学院)
先端医療技術・支援学特別研究 (大学院)
分析医化学演習 (大学院)
分析医化学特論 (大学院)
医療法規 (学部)
医療経済論 (学部)
検査機器総論 (学部)
生化学Ⅰ(生体分子の構造と機能) (学部)
生化学Ⅱ(疾病と生化学的変化) (学部)
生化学実習 (学部)
生化学検査学実習 (学部)
生化学的検査Ⅰ(測定基礎原理・各論) (学部)
生化学的検査Ⅱ(各論・機能検査) (学部)
生命科学の研究手法 (大学院)
病態制御保健学特別研究 (大学院)
病態制御保健学特講 (大学院)
病態制御保健学特講演習 (大学院)
統合臨床検査学 (学部)
臨床化学実習 (学部)
臨床技能実習 (学部)
臨床検査学入門 (共通教育)
臨床検査総論管理学 (学部)
指導経験: 4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5月3日更新

専門分野・研究分野: 保健学 (Health Studies)
腎臓病学 (Nephrology)

研究テーマ: 研究者総覧に該当データはありませんでした。

著書

Tatsuya Tominaga, Hideharu Abe, Akira Mima, Kojiro Nagai, Matsubara Takeshi and Toshio Doi :
Role of Smad 1 Signaling in Pathogenesis of Diabetic Nephropathy,
Nova Science Publishers, Sep. 2012. 冨永辰也, 土井俊夫 :
糖尿病性腎症のバイオマーカー開発と臨床への展望,
2011年8月. 冨永辰也, 土井俊夫 :
糖尿病関連遺伝子改変マウス,
2010年8月.

論文

Kenji Nishimura, Taichi Murakami, Toshihiro Sakurai, Masashi Miyoshi, Kiyoe Kurahashi, Seiji Kishi, Masanori Tamaki, Tatsuya Tominaga, Sumiko Yoshida, Kojiro Nagai, Hideharu Abe, Shu-Ping Hui, Kazuhiko Kotani and Toshio Doi :
Circulating Apolipoprotein L1 is associated with insulin resistance-induced abnormal lipid metabolism.,
Scientific Reports, Vol.9, No.1, 14869, 2019.

(要約): Circulating ApolipoproteinL1 (ApoL1) is a component of pre-β-high-density lipoprotein (HDL), however little is known about the relationship of ApoL1 with cardiometabolic factors. Considering previous studies reporting the correlation of ApoL1 to triglyceride, we have hypothesized that ApoL1 associates with insulin-related metabolism. The current study examined their associations in 126 non-diabetic subjects and 36 patients with type 2 diabetes (T2DM). Non-diabetic subjects demonstrated triglyceride (standardized coefficients [s.c.] = 0.204, p < 0.05), body mass index (s.c. =0.232, p < 0.05) and HDL cholesterol (s.c. = -0.203, p < 0.05) as independent determinant of ApoL1 levels, and the significant elevation of ApoL1 in metabolic syndrome. Lipoprotein fractionation analysis revealed the predominant distribution of ApoL1 in large HDL fraction, and the significant increase of ApoL1 in large LDL fraction in high ApoL1 samples with insulin resistance. In T2DM, ApoL1 was higher in T2DM with metabolic syndrome, however ApoL1 was lower with β cell dysfunction. Insulin significantly promotes ApoL1 synthesis and secretion in HepG2 cells. In conclusion, circulating ApoL1 may be associated with abnormal HDL metabolism in insulin resistant status. This may suggest a regulation of insulin signal on the ApoL1 level, leading to offer a novel insight to the ApoL1 biology.
(徳島大学機関リポジトリ): ● Metadata: 114663
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-019-51367-7
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31619724; ● Search Scopus @ Elsevier (PMID): 31619724; ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-019-51367-7

(徳島大学機関リポジトリ: 114663, DOI: 10.1038/s41598-019-51367-7, PubMed: 31619724) Akiko Sakurai, Hiroyuki Ono, Arisa Ochi, Motokazu Matsuura, Sakiya Yoshimoto, Seiji Kishi, Taichi Murakami, Tatsuya Tominaga, Kojiro Nagai, Hideharu Abe and Toshio Doi :
Involvement of Elf3 on Smad3 activation-dependent injuries in podocytes and excretion of urinary exosome in diabetic nephropathy.,
PLoS ONE, Vol.14, No.5, 2019.

(要約): Diabetic nephropathy (DN) is among the most serious complications of diabetes mellitus, and often leads to end-stage renal disease ultimately requiring dialysis or renal transplantation. The loss of podocytes has been reported to have a role in the onset and progression of DN. Here, we addressed the activation mechanism of Smad3 signaling in podocytes. Expression of RII and activation of Smad3 were induced by AGE exposure (P<0.05). Reduction of the activation of RII-Smad3 signaling ameliorated podocyte injuries in Smad3-knockout diabetic mice. The bone morphogenetic protein 4 (BMP4) significantly regulated activation of RII-Smad3 signalings (P<0.05). Moreover, the epithelium-specific transcription factor, Elf3was induced by AGE stimulation and, subsequently, upregulated RII expression in cultured podocytes. Induction of Elf3 and activation of RII-Smad3 signaling, leading to a decrease in WT1 expression, were observed in podocytes in diabetic human kidneys. Moreover, AGE treatment induced the secretion of Elf3-containing exosomes from cultured podocytes, which was dependent on the activation of the TGF-β-Smad3 signaling pathway. In addition, exosomal Elf3 protein in urine could be measured only in urinary exosomes from patients with DN. The appearance of urinary exosomal Elf3 protein in patients with DN suggested the existence of irreversible injuries in podocytes. The rate of decline in the estimated Glomerular Filtration Rate (eGFR) after measurement of urinary exosomal Elf3 protein levels in patients with DN (R2 = 0.7259) might be useful as an early non-invasive marker for podocyte injuries in DN.
(徳島大学機関リポジトリ): ● Metadata: 114344
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0216788
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31150422; ● Search Scopus @ Elsevier (PMID): 31150422; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0216788

(徳島大学機関リポジトリ: 114344, DOI: 10.1371/journal.pone.0216788, PubMed: 31150422) 藤田結衣, 冨永辰也, 寒川裕未, 長井幸二郎, 安部秀斉, 土井俊夫 :
BMP4 regulates both podocyte injury and mesangial expansion in the diabetic nephropathy,
四国医学雑誌, Vol.75, No.1-2, 55-62, 2019年.

(要約): Podocyte injury and loss have been indicated as constituting the crucial pathogenesis of glomerular injury ; however, it remains necessary to elucidate the detailed molecular mechanisms and cell-to-cell response because multiple factors may cause podocyte injury. In the glomerulus, three kinds of cells (endothelial, mesangial, and parietal epithelial) react to podocyte injury. Endothelial and mesangial cells are connected with podocyte cells across the glomerular basement membrane. However, the detailed mechanisms regarding the interaction of the mesangium and podocyte injury are unclear. Diabetic nephropathy is characterized by mesangial matrix expansion caused by an excessive deposition of extracellular matrix proteins in the mesangial area, which can be observed through the increased expression of type IV collagen. We have shown that bone morphogenetic protein 4 (BMP4) signaling leads to the glomerular changes characteristic of this disorder. To analyze the effect of BMP4 was investigated in vitro and in vivo using streptozotocin (STZ)-induced and Bmp4 heterozygous knockout (Bmp4+/-) diabetic mice or podocyte-specific Bmp4 knockout mice, and Bmp4-induced or podocyte-specific transgenic mice. BMP4 positive area and mesangial area fraction showed positively correlation. Furthermore, mesangial area fraction was significantly and negatively correlated with,WT1-positive cell number, and nephrin-positive area. We also demonstrated that the induction of podocyte apoptosis by BMP4 may be mediated by p38 activation and that of caspase 3 through cleavage. In mesangial cells, BMP4 stimulation also induced phosphorylation of p38 and Smad1 and increased cleaved caspase 3, with similar significant inhibition of Smad1 activation and decreased cleaved caspase 3 mediated by dorsomorphin. These data suggest that the BMP4 signaling pathway plays important roles for the development of both podocyte injury and mesangial expansion in diabetic nephropathy.
(キーワード): BMP4 / diabetic nephropathy / podocyte / apotosis / mesangial expansion
(徳島大学機関リポジトリ): ● Metadata: 113757
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1050564288726855552

(徳島大学機関リポジトリ: 113757, CiNii: 1050564288726855552) Masanori Tamaki, Tatsuya Tominaga, Yui Fujita, Yasuhiko Koezuka, Go Ichien, Taichi Murakami, Seiji Kishi, Keiichi Yamamoto, Hideharu Abe, Kojiro Nagai and Toshio Doi :
All-trans retinoic acid suppresses bone morphogenetic protein 4 in mouse diabetic nephropathy through a unique retinoic acid response element.,
American Journal of Physiology, Endocrinology and Metabolism, Vol.316, No.3, E418-E431, 2019.

(要約): Diabetic nephropathy (DN) causes mesangial matrix expansion, which results in glomerulosclerosis and renal failure. Collagen IV (COL4) is a major component of the mesangial matrix that is positively regulated by bone morphogenetic protein 4 (BMP4)/suppressor of mothers against decapentaplegic (Smad1) signaling. Because previous studies showed that retinoids treatment had a beneficial effect on kidney disease, we investigated the therapeutic potential of retinoids in DN, focusing especially on the regulatory mechanism of BMP4. Diabetes was induced with streptozotocin in 12-wk-old male Crl:CD1(ICR) mice, and, 1 mo later, we initiated intraperitoneal injection of all-trans retinoic acid (ATRA) three times weekly. Glomerular matrix expansion, which was associated with increased BMP4, phosphorylated Smad1, and COL4 expression, worsened in diabetic mice at 24 wk of age. ATRA administration alleviated DN and downregulated BMP4, phosopho-Smad1, and COL4. In cultured mouse mesangial cells, treatment with ATRA or a retinoic acid receptor-α (RARα) agonist significantly decreased BMP4 and COL4 expression. Genomic analysis suggested two putative retinoic acid response elements (RAREs) for the mouse Bmp4 gene. Chromatin immunoprecipitation analysis and reporter assays indicated a putative RARE of the Bmp4 gene, located 11,488-11,501 bp upstream of exon 1A and bound to RARα and retinoid X receptor (RXR), which suppressed BMP4 expression after ATRA addition. ATRA suppressed BMP4 via binding of a RARα/RXR heterodimer to a unique RARE, alleviating glomerular matrix expansion in diabetic mice. These findings provide a novel regulatory mechanism for treatment of DN.
(出版サイトへのリンク): ● Publication site (DOI): 10.1152/ajpendo.00218.2018
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30601699; ● Search Scopus @ Elsevier (PMID): 30601699; ● Search Scopus @ Elsevier (DOI): 10.1152/ajpendo.00218.2018

(DOI: 10.1152/ajpendo.00218.2018, PubMed: 30601699) Tatsuya Tominaga, Isha Sharma, Yui Fujita, Toshio Doi, K Aryana Wallner and S Yashpal Kanwar :
Myo-inositol oxygenase accentuates renal tubular injury initiated by endoplasmic reticulum stress.,
American Journal of Physiology, Renal Physiology, Vol.316, No.2, F301-F315, 2018.

(要約): Besides oxidant stress, endoplasmic reticulum (ER) stress has been implicated in the pathogenesis of various metabolic disorders affecting the kidney. These two forms of stresses are not mutually exclusive to each other and may operate by a feedback loop in worsening the cellular injury. To attest to this contention, studies were performed to assess whether in such a setting, there is worsening of tubulointerstitial injury. We employed tunicamycin as a model of ER stress and used tubular cells and mice overexpressing myo-inositol oxygenase (MIOX), an enzyme involved in glycolytic events with excessive generation of ROS. Concomitant treatment of tunicamycin and transfection of cells with MIOX-pcDNA led to a marked generation of ROS, which was reduced by MIOX-siRNA. Likewise, an accentuated expression of ER stress sensors, GRP78, XBP1, and CHOP, was observed, which was reduced with MIOX-siRNA. These sensors were markedly elevated in MIOX-TG mice compared with WT treated with tunicamycin. This was accompanied with marked deterioration of tubular morphology, along with impairment of renal functions. Interestingly, minimal damage and elevation of ER stressors was observed in MIOX-KO mice. Downstream events that were more adversely affected in MIOX-TG mice included accentuated expression of proapoptogenic proteins, proinflammatory cytokines, and extracellular matrix constituents, although expression of these molecules was unaffected in MIOX-KO mice. Also, their tunicamycin-induced accentuated expression in tubular cells was notably reduced with MIOX-siRNA. These studies suggest that the biology of MIOX-induced oxidant stress and tunicamycin-induced ER stress are interlinked, and both of the events may feed into each other to amplify the tubulointerstitial injury.
(出版サイトへのリンク): ● Publication site (DOI): 10.1152/ajprenal.00534.2018
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30539651; ● Summary page in Scopus @ Elsevier: 2-s2.0-85060790747

(DOI: 10.1152/ajprenal.00534.2018, PubMed: 30539651, Elsevier: Scopus) Yui Fujita, Tatsuya Tominaga, Hideharu Abe, Yumi Kangawa, Naoshi Fukushima, Otoya Ueda, Kou-Ichi Jishage, Seiji Kishi, Taichi Murakami, Yumiko Saga, S Yashpal Kanwar, Kojiro Nagai and Toshio Doi :
An adjustment in BMP4 function represents a treatment for diabetic nephropathy and podocyte injury.,
Scientific Reports, Vol.8, No.1, 2018.

(要約): Podocyte injury has been proposed to play an important role in diabetic nephropathy; however, its pathological mechanism remains unclear. We have shown that bone morphogenetic protein 4 (BMP4) signaling leads to the glomerular changes characteristic of this disorder. To analyze the molecular mechanism of podocyte injury, the effect of BMP4 was investigated using streptozotocin (STZ)-induced, Bmp4 heterozygous knockout (Bmp4+/-) and podocyte-specific Bmp4 knockout mice. Mice with STZ-induced diabetes exhibited glomerular matrix hyperplasia and decreased numbers of podocyte nucleus-specific WT1-positive cells. The number of podocytes and proteinuria were improved in both diabetic Bmp4 knockout mouse models compared to the effects observed in the control mice. The effect of BMP4 overexpression on Bmp4-induced or podocyte-specific transgenic mice was examined. Tamoxifen-induced Bmp4-overexpressing mice exhibited mesangial matrix expansion and decreased numbers of WT1-positive cells. Podocyte-specific Bmp4-overexpressing mice displayed increased kidney BMP4 expression and mesangial matrix expansion but decreased nephrin expression and numbers of WT1-positive cells. Both lines of Bmp4-overexpressing mice exhibited increased albuminuria. In cultured podocytes, BMP4 increased phospho-p38 levels. BMP4 decreased nephrin expression but increased cleaved caspase-3 levels. p38 suppression inhibited caspase-3 activation. Apoptosis was confirmed in STZ-diabetic glomeruli and Bmp4-overexpressing mice. Bmp4 +/- mice with diabetes displayed reduced apoptosis. Based on these data, the BMP4 signaling pathway plays important roles in the development of both podocyte injury and mesangial matrix expansion in diabetic nephropathy.
(徳島大学機関リポジトリ): ● Metadata: 112896
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-018-31464-9
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30158674; ● Search Scopus @ Elsevier (PMID): 30158674; ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-018-31464-9

(徳島大学機関リポジトリ: 112896, DOI: 10.1038/s41598-018-31464-9, PubMed: 30158674) Hiroyuki Ono, Hideharu Abe, Akiko Sakurai, Arisa Ochi, Tatsuya Tominaga, Masanori Tamaki, Seiji Kishi, Taichi Murakami, Kojiro Nagai, Masayuki Kohashi and Toshio Doi :
Novel Interplay Between Smad1 and Smad3 Phosphorylation via AGE Regulates the Progression of Diabetic Nephropathy.,
Scientific Reports, Vol.8, No.1, 2018.

(要約): ; db/db mice and probucol-treated db/db mice, which was consistent with the attenuation of ECM overproduction. These results indicate that Smad3 expression and activation or probucol treatment alters Smad1 phosphorylation, thus suggesting new molecular mechanisms underlying DN development and progression.
(徳島大学機関リポジトリ): ● Metadata: 112878
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41598-018-28439-1
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30002389; ● Search Scopus @ Elsevier (PMID): 30002389; ● Search Scopus @ Elsevier (DOI): 10.1038/s41598-018-28439-1

(徳島大学機関リポジトリ: 112878, DOI: 10.1038/s41598-018-28439-1, PubMed: 30002389) Fumi Kishi, Kojiro Nagai, Norimichi Takamatsu, Tatsuya Tominaga, Masanori Tamaki, E. Shibata, Taichi Murakami, Seiji Kishi, Hideharu Abe, Y Koezuka, N Minagawa, G Ichien and Toshio Doi :
Urinary type IV collagen excretion is involved in the decline in estimated glomerular filtration rate in the Japanese general population without diabetes: A 5-year observational study.,
PLoS ONE, Vol.13, No.4, e0195523, 2018.

(要約): Urinary type IV collagen (U-Col4) and albumin excretion is evaluated to monitor the development of diabetic kidney disease. However, U-Col4 excretion in the general population without diabetes has not yet been fully elucidated. In this study, 1067 participants without diabetes and with urinary albumin-creatinine ratio <300 mg/gCr (normo- or microalbuminuria) who underwent an annual health examination in 2004 were enrolled and observed for 5 years. They were divided according to the amount of U-Col4 or urinary albumin excreted. The decline in estimated glomerular filtration rate (eGFR) was calculated. In participants with eGFR ≥80 mL/min, abnormal U-Col4 excretion was indicated as a significant independent risk factor for 10% eGFR change per year, which is one of the prognostic factors for the development of end-stage kidney disease. Moreover, in contrast to urinary albumin excretion, U-Col4 excretion was not related to age or kidney function, suggesting that some individuals with abnormal U-Col4 excretion can have an independent hidden risk for the development of kidney dysfunction. In conclusion, it is important to measure U-Col4 excretion in the general population without diabetes to determine changes in renal features in every individual and help detect future complications such as diabetic kidney disease. If U-Col4 excretion is abnormal, kidney manifestation should be carefully followed up, even if the kidney function and urinalysis findings are normal.
(キーワード): Adult / Aged / Aged, 80 and over / Albuminuria / Asian Continental Ancestry Group / Collagen Type IV / Diabetic Nephropathies / Disease Progression / Female / Glomerular Filtration Rate / Humans / Japan / Kaplan-Meier Estimate / Male / Middle Aged / Prognosis / Renal Insufficiency / Risk Factors / Young Adult
(徳島大学機関リポジトリ): ● Metadata: 112361
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0195523
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29624611; ● Search Scopus @ Elsevier (PMID): 29624611; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0195523

(徳島大学機関リポジトリ: 112361, DOI: 10.1371/journal.pone.0195523, PubMed: 29624611) Toshio Doi, Hideharu Abe, Seiji Kishi, Taichi Murakami, Kojiro Nagai and Tatsuya Tominaga :
Urinary IgG4 and Smad1 are Specific Biomarkers for Renal Structural and Functional Changes in Early Stages of Diabetic Nephropathy.,
Diabetes, Vol.67, No.5, 986-993, 2018.

(要約): Diabetic nephropathy (DN) is the major cause of end-stage kidney disease, but early biomarkers of DN risk are limited. Herein we examine urinary IgG4 and Smad1 as additional early DN biomarkers. We recruited 815 patients with type 2 diabetes; 554 patients fulfilled the criteria of an estimated glomerular filtration rate (eGFR) >60 mL/min and no macroalbuminuria at baseline, with follow-up for 5 years. Patients without macroalbuminuria were also recruited for renal biopsies. Urinary IgG4 and Smad1 were determined by enzyme-linked immunoassays using specific antibodies. The specificity, sensitivity, and reproducibility were confirmed for each assay. Increased urinary IgG4 was significantly associated with lower eGFR. The level of urinary IgG4 also significantly correlated with surface density of peripheral glomerular basement membrane (Sv PGBM/Glom), whereas Smad1 was associated with the degree of mesangial expansion-both classic pathological findings in DN. Baseline eGFR did not differ between any groups; however, increases in both urinary IgG4 and Smad1 levels at baseline significantly predicted later development of eGFR decline in patients without macroalbuminuria. These data suggest that urinary IgG4 and Smad1 at relatively early stages of DN reflect underlying DN lesions and are relevant to later clinical outcomes.
(キーワード): Adult / Biomarkers / Diabetes Mellitus, Type 2 / Diabetic Nephropathies / Early Diagnosis / Enzyme-Linked Immunosorbent Assay / Female / Glomerular Basement Membrane / Glomerular Filtration Rate / Humans / Immunoglobulin G / Kidney / Male / Mesangial Cells / Microscopy, Electron / Middle Aged / Reproducibility of Results / Sensitivity and Specificity / Smad1 Protein
(出版サイトへのリンク): ● Publication site (DOI): 10.2337/db17-1043
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29490904; ● Search Scopus @ Elsevier (PMID): 29490904; ● Search Scopus @ Elsevier (DOI): 10.2337/db17-1043

(DOI: 10.2337/db17-1043, PubMed: 29490904) Hideharu Abe and Tatsuya Tominaga :
New insights into the molecular pathology and the development of predictive biomarkers in diabetic mephropathy.,
Trends in Cell & Molecular Biology, Vol.13, No.4, 19-26, 2018. Kojiro Nagai, Tatsuya Tominaga, Sayo Ueda, Eriko Shibata, Masanori Tamaki, Motokazu Matsuura, Seiji Kishi, Taichi Murakami, Tatsumi Moriya, Hideharu Abe and Toshio Doi :
Mesangial Cell Mammalian Target of Rapamycin Complex 1 Activation Results in Mesangial Expansion.,
Journal of the American Society of Nephrology, Vol.28, No.10, 2879-2885, 2017.

(要約): Human glomerular diseases can be caused by several different diseases, many of which include mesangial expansion and/or proliferation followed by glomerulosclerosis. However, molecular mechanisms underlying the pathologic mesangial changes remain poorly understood. Here, we investigated the role of the mammalian target of rapamycin complex 1 (mTORC1)-S6 kinase pathway in mesangial expansion and/or proliferation by ablating an upstream negative regulator, tuberous sclerosis complex 1 (TSC1), using tamoxifen-induced Foxd1-Cre mice [Foxd1ER(+) TSC1 mice]. Foxd1ER(+) TSC1 mice showed mesangial expansion with increased production of collagen IV, collagen I, and -smooth muscle actin in glomeruli, but did not exhibit significant mesangial proliferation or albuminuria. Furthermore, rapamycin treatment of Foxd1ER(+) TSC1 mice suppressed mesangial expansion. Among biopsy specimens from patients with glomerular diseases, analysis of phosphorylated ribosomal protein S6 revealed mesangial cell mTORC1 activation in IgA nephropathy and in lupus mesangial proliferative nephritis but not in the early phase of diabetic nephropathy. In summary, mesangial cell mTORC1 activation can cause mesangial expansion and has clinical relevance for human glomerular diseases. This report also confirms that the tamoxifen-induced mesangium-specific Cre-loxP system is useful for studies designed to clarify the role of the mesangium in glomerular diseases in adults.
(出版サイトへのリンク): ● Publication site (DOI): 10.1681/ASN.2016111196
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28701517; ● Summary page in Scopus @ Elsevier: 2-s2.0-85030471083

(DOI: 10.1681/ASN.2016111196, PubMed: 28701517, Elsevier: Scopus) Motokazu Matsuura, Hideharu Abe, Tatsuya Tominaga, Akiko Sakurai, Taichi Murakami, Seiji Kishi, Yoshimi Bando, Jun Minakuchi, Kojiro Nagai and Toshio Doi :
A Novel Method of DAPI Staining for Differential Diagnosis of Renal Amyloidosis.,
The Journal of Medical Investigation : JMI, Vol.64, No.3.4, 217-221, 2017.

(要約): Amyloidosis is often overlooked because its clinical manifestations can mimic those of more-common diseases. It is important to get a precise diagnosis as early as possible for the prevention of further organ damages. Amyloidosis is a disorder caused by deposition of insoluble abnormal amyloid. The kidney is a frequent site of amyloid deposition. The amyloid fibrils have a characteristic appearance and generate birefringence under polarized light when stained with the Congo red dye. Classification of amyloidosis is based on the precursor protein that forms the amyloid fibrils and the distribution of amyloid deposits as either systemic or localized. Involvement of amyloid fibrils in kidneys mainly occurs as amyloid light-chain (AL) or amyloid A (AA) amyloidosis. The potassium permanganate method with Congo red staining was once used widely to discriminate AL and AA amyloidoses, but this method has a problem of false positive results. We found that extracellular and cytoplasmic glomerular 4', 6-diamidino-2-phenylindole (DAPI)-positive areas were clearly consistent with amyloid deposition in AL amyloidosis. In contrast, the overlapping staining was not seen in AA amyloidosis. Therefore, we propose that DAPI staining readily distinguishes AL renal amyloidosis from AA renal amyloidosis as a simple and reproducible histochemical method. J. Med. Invest. 64: 217-221, August, 2017.
(キーワード): Amyloidosis / Kidney Diseases / Serum Amyloid A Protein / Staining and Labeling
(徳島大学機関リポジトリ): ● Metadata: 111119
(出版サイトへのリンク): ● Publication site (DOI): 10.2152/jmi.64.217
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28954985; ● Search Scopus @ Elsevier (PMID): 28954985; ● Search Scopus @ Elsevier (DOI): 10.2152/jmi.64.217

(徳島大学機関リポジトリ: 111119, DOI: 10.2152/jmi.64.217, PubMed: 28954985) Tatsuya Tominaga, K Rajesh Dutta, Darukeshwara Joladarashi, Toshio Doi, K Janardan Reddy and S Yashpal Kanwar :
Transcriptional and Translational Modulation of myo-Inositol Oxygenase (Miox) by Fatty Acids: IMPLICATIONS IN RENAL TUBULAR INJURY INDUCED IN OBESITY AND DIABETES.,
The Journal of Biological Chemistry, Vol.291, No.3, 1348-1367, 2015.

(要約): The kidney is one of the target organs for various metabolic diseases, including diabetes, metabolic syndrome, and obesity. Most of the metabolic studies underscore glomerular pathobiology, although the tubulo-interstitial compartment has been underemphasized. This study highlights mechanisms concerning the pathobiology of tubular injury in the context of myo-inositol oxygenase (Miox), a tubular enzyme. The kidneys of mice fed a high fat diet (HFD) had increased Miox expression and activity, and the latter was related to phosphorylation of serine/threonine residues. Also, expression of sterol regulatory element-binding protein1 (Srebp1) and markers of cellular/nuclear damage was increased along with accentuated apoptosis and loss of tubular brush border. Similar results were observed in cells treated with palmitate/BSA. Multiple sterol-response elements and E-box motifs were found in the miox promoter, and its activity was modulated by palmitate/BSA. Electrophoretic mobility and ChIP assays confirmed binding of Srebp to consensus sequences of the miox promoter. Exposure of palmitate/BSA-treated cells to rapamycin normalized Miox expression and prevented Srebp1 nuclear translocation. In addition, rapamycin treatment reduced p53 expression and apoptosis. Like rapamycin, srebp siRNA reduced Miox expression. Increased expression of Miox was associated with the generation of reactive oxygen species (ROS) in kidney tubules of mice fed an HFD and cell exposed to palmitate/BSA. Both miox and srebp1 siRNAs reduced generation of ROS. Collectively, these findings suggest that HFD or fatty acids modulate transcriptional, translational, and post-translational regulation of Miox expression/activity and underscore Miox being a novel target of the transcription factor Srebp1. Conceivably, activation of the mTORC1/Srebp1/Miox pathway leads to the generation of ROS culminating into tubulo-interstitial injury in states of obesity.
(出版サイトへのリンク): ● Publication site (DOI): 10.1074/jbc.M115.698191
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26578517; ● Summary page in Scopus @ Elsevier: 2-s2.0-84954486114

(DOI: 10.1074/jbc.M115.698191, PubMed: 26578517, Elsevier: Scopus) Takahiro Hirano, Taichi Murakami, Hiroyuki Ono, Akiko Sakurai, Tatsuya Tominaga, Toshikazu Takahashi, Kojiro Nagai, Toshio Doi and Hideharu Abe :
A Novel Interaction between FLICE-Associated Huge Protein (FLASH) and E2A Regulates Cell Proliferation and Cellular Senescence via Tumor Necrosis Factor (TNF)-Alpha-p21WAF1/CIP1 Axis.,
PLoS ONE, Vol.10, No.7, e0133205, 2015.

(要約): Dysregulation of the cell proliferation has been implicated in the pathophysiology of a number of diseases. Cellular senescence limits proliferation of cancer cells, preventing tumorigenesis and restricting tissue damage. However, the role of cellular senescence in proliferative nephritis has not been determined. The proliferative peak in experimental rat nephritis coincided with a peak in E2A expression in the glomeruli. Meanwhile, E12 (an E2A-encoded transcription factor) did not promote proliferation of Mesangial cells (MCs) by itself. We identified caspase-8-binding protein FLICE-associated huge protein (FLASH) as a novel E2A-binding partner by using a yeast two-hybrid screening. Knockdown of FLASH suppressed proliferation of MCs. This inhibitory effect was partially reversed by the knockdown of E2A. In addition, the knockdown of FLASH induced cyclin-dependent kinase inhibitor p21WAF1/CIP1 (p21) expression, but did not affect p53 expression. Furthermore, overexpression of E12 and E47 induced p21, but not p53 in MCs, in the absence of FLASH. We also demonstrated that E2A and p21 expression at the peak of proliferation was followed by significant induction of FLASH in mesangial areas in rat proliferative glomerulonephritis. Moreover, we revealed that FLASH negatively regulates cellular senescence via the interaction with E12. We also demonstrated that FLASH is involved in the TNF--induced p21 expressions. These results suggest that the functional interaction of E2A and FLASH play an important role in cell proliferation and cellular senescence via regulation of p21 expression in experimental glomerulonephritis.
(徳島大学機関リポジトリ): ● Metadata: 114923
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0133205
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26208142; ● Summary page in Scopus @ Elsevier: 2-s2.0-84941908247

(徳島大学機関リポジトリ: 114923, DOI: 10.1371/journal.pone.0133205, PubMed: 26208142, Elsevier: Scopus) Takeshi Matsubara, Makoto Araki, Hideharu Abe, Otoya Ueda, Kou-Ichi Jishage, Akira Mima, Chisato Goto, Tatsuya Tominaga, Masahiko Kinosaki, Seiji Kishi, Kojiro Nagai, Noriyuki Iehara, Naoshi Fukushima, Toru Kita, Hidenori Arai and Toshio Doi :
Bone Morphogenetic Protein 4 and Smad1 Mediate Extracellular Matrix Production in the Development of Diabetic Nephropathy.,
Diabetes, Vol.64, No.8, 2978-2990, 2015.

(要約): Diabetic nephropathy is the leading cause of end-stage renal disease. It is pathologically characterized by the accumulation of extracellular matrix in the mesangium, of which the main component is 1/2 type IV collagen (Col4a1/a2). Recently, we identified Smad1 as a direct regulator of Col4a1/a2 under diabetic conditions in vitro. Here, we demonstrate that Smad1 plays a key role in diabetic nephropathy through bone morphogenetic protein 4 (BMP4) in vivo. Smad1-overexpressing mice (Smad1-Tg) were established, and diabetes was induced by streptozotocin. Nondiabetic Smad1-Tg did not exhibit histological changes in the kidney; however, the induction of diabetes resulted in an 1.5-fold greater mesangial expansion, consistent with an increase in glomerular phosphorylated Smad1. To address regulatory factors of Smad1, we determined that BMP4 and its receptor are increased in diabetic glomeruli and that diabetic Smad1-Tg and wild-type mice treated with a BMP4-neutralizing antibody exhibit decreased Smad1 phosphorylation and 40% less mesangial expansion than those treated with control IgG. Furthermore, heterozygous Smad1 knockout mice exhibit attenuated mesangial expansion in the diabetic condition. The data indicate that BMP4/Smad1 signaling is a critical cascade for the progression of mesangial expansion and that blocking this signal could be a novel therapeutic strategy for diabetic nephropathy.
(出版サイトへのリンク): ● Publication site (DOI): 10.2337/db14-0893
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25995358; ● Summary page in Scopus @ Elsevier: 2-s2.0-84943360079

(DOI: 10.2337/db14-0893, PubMed: 25995358, Elsevier: Scopus) Kazuhiro Yoshikawa, Hideharu Abe, Tatsuya Tominaga, Masayuki Nakamura, Seiji Kishi, Motokazu Matsuura, Kojiro Nagai, Kenji Tsuchida, Jun Minakuchi and Toshio Doi :
Polymorphism in the human matrix Gla protein gene is associated with the progression of vascular calcification in maintenance hemodialysis patients,
Clinical and Experimental Nephrology, Vol.17, No.6, 882-889, 2013.

(要約): Matrix Gla protein (MGP) is one of the important proteins inhibiting vascular calcification (VC). Single nucleotide polymorphisms (SNPs) located in the promoter and coding regions of the MGP gene affect the transcriptional activity. In this study, we investigated the relationship between the SNPs and progression of VC in patients undergoing maintenance hemodialysis (MHD). This was a retrospective, longitudinal cohort study of 134 MHD patients whose VC could be followed by multi-detector computed tomography (MDCT) examinations. MGP-SNPs (T-138C, rs1800802 and G-7A, rs1800801) were determined. The progression speed of VC was examined by plotting the abdominal aortic calcium volume scores. The progression speed of VC of patients with the CC genotype of T-138C was significantly slower than that of patients with the CT or TT genotype. Multiple regression analysis showed that CT/TT genotype, greater age at the beginning of MHD, male sex, high levels of calcium × phosphate, low levels of high-density lipoprotein cholesterol, high levels of low-density lipoprotein cholesterol, low levels of ferritin and non-use of angiotensin II receptor blockers were significantly associated with progression of VC. The MGP-138CC genotype may be associated with slower progression of VC in MHD patients. The genotype of the MGP gene will be a genomic biomarker that is predictive of VC progression.
(徳島大学機関リポジトリ): ● Metadata: 105885
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s10157-013-0785-9
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23504408; ● Summary page in Scopus @ Elsevier: 2-s2.0-84891483720

(徳島大学機関リポジトリ: 105885, DOI: 10.1007/s10157-013-0785-9, PubMed: 23504408, Elsevier: Scopus) Kojiro Nagai, Masashi Miyoshi, Takei Kake, Naoshi Fukushima, Motokazu Matsuura, Eriko Shibata, Satoshi Yamada, Kazuhiro Yoshikawa, Hiro-omi Kanayama, Tomoya Fukawa, Kunihisa Yamaguchi, Hirofumi Izaki, Akira Mima, Naoko Abe, Toshikazu Araoka, Taichi Murakami, Fumi Kishi, Seiji Kishi, Tatsuya Tominaga, Tatsumi Moriya, Hideharu Abe and Toshio Doi :
Dual Involvement of Growth Arrest-specific Gene 6 in the Early Phase of Human IgA Nephropathy,
PLoS ONE, Vol.8, No.6, e66759, 2013.

(要約): Gas6 is a growth factor that causes proliferation of mesangial cells in the development of glomerulonephritis. Gas6 can bind to three kinds of receptors; Axl, Dtk, and Mer. However, their expression and functions are not entirely clear in the different glomerular cell types. Meanwhile, representative cell cycle regulatory protein p27 has been reported to be expressed in podocytes in normal glomeruli with decreased expression in proliferating glomeruli, which inversely correlated with mesangial proliferation in human IgA nephropathy (IgAN). The aim of this study is to clarify Gas6 involvement in the progression of IgAN. Expression of Gas6/Axl/Dtk was examined in 31 biopsy proven IgAN cases. We compared the expression levels with histological severity or clinical data. Moreover, we investigated the expression of Gas6 and its receptors in cultured podocytes. In 28 of 31 cases, Gas6 was upregulated mainly in podocytes. In the other 3 cases, Gas6 expression was induced in endothelial and mesangial cells, which was similar to animal nephritis models. Among 28 podocyte type cases, the expression level of Gas6 correlated with the mesangial hypercellularity score of IgAN Oxford classification and urine protein excretion. It also inversely correlated with p27 expression in glomeruli. As for the receptors, Axl was mainly expressed in endothelial and mesangial cells, while Dtk was expressed in podocytes. In vitro, Dtk was expressed in cultured murine podocytes, and the expression of p27 was decreased by Gas6 stimulation. Gas6 was uniquely upregulated in either endothelial/mesangial cells or podocytes in IgAN. The expression pattern can be used as a marker to classify IgAN. Gas6 has a possibility to be involved in not only mesangial proliferation via Axl, but also podocyte injury via Dtk in IgAN.
(キーワード): Cells, Cultured / Endothelial Cells / Glomerulonephritis, IGA / Humans / Immunohistochemistry / Intercellular Signaling Peptides and Proteins / Mesangial Cells / Podocytes
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0066759
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 23826128; ● Summary page in Scopus @ Elsevier: 2-s2.0-84879474790

(DOI: 10.1371/journal.pone.0066759, PubMed: 23826128, Elsevier: Scopus) Hideharu Abe, Tatsuya Tominaga, Takeshi Matsubara, Naoko Abe, Seiji Kishi, Kojiro Nagai, Taichi Murakami, Toshikazu Araoka and Toshio Doi :
Scleraxis modulates bone morphogenetic protein 4 (BMP4)-Smad1 protein-smooth muscle -actin (SMA) signal transduction in diabetic nephropathy.,
The Journal of Biological Chemistry, Vol.287, No.24, 20430-20442, 2012.

(要約): Activation of mesangial cells (MCs), which is characterized by induction of smooth muscle -actin (SMA) expression, contributes to a key event in various renal diseases; however, the mechanisms controlling MC differentiation are still largely undefined. Activated Smad1 induced SMA in a dose-dependent manner in MCs. As a direct regulating molecule for SMA, we identified and characterized scleraxis (Scx) as a new phenotype modulator in advanced glycation end product (AGE)-exposed MCs. Scx physically associated with E12 and bound the E-box in the promoter of SMA and negatively regulated the AGE-induced SMA expression. Scx induced expression and secretion of bone morphogenetic protein 4 (BMP4), thereby controlling the Smad1 activation in AGE-treated MCs. In diabetic mice, Scx was concomitantly expressed with SMA in the glomeruli. Inhibitor of differentiation 1 (Id1) was further induced by extended treatment with AGE, thereby dislodging Scx from the SMA promoter. These data suggest that Scx and Id1 are involved in the BMP4-Smad1-SMA signal transduction pathway besides the TGF1-Smad1-SMA signaling pathway and modulate phenotypic changes in MCs in diabetic nephropathy.
(出版サイトへのリンク): ● Publication site (DOI): 10.1074/jbc.M111.275610
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 22474292; ● Search Scopus @ Elsevier (PMID): 22474292; ● Search Scopus @ Elsevier (DOI): 10.1074/jbc.M111.275610

(DOI: 10.1074/jbc.M111.275610, PubMed: 22474292) Seiji Kishi, Hideharu Abe, Haruhiko Akiyama, Tatsuya Tominaga, Taichi Murakami, Akira Mima, Kojiro Nagai, Fumi Kishi, Motokazu Matsuura, Takeshi Matsubara, Noriyuki Iehara, Otoya Ueda, Naoshi Fukushima, Kou-Ichi Jishage and Toshio Doi :
SOX9 protein induces a chondrogenic phenotype of mesangial cells and contributes to advanced diabetic nephropathy.,
The Journal of Biological Chemistry, Vol.286, No.37, 32162-32169, 2011.

(要約): Diabetic nephropathy (DN) is the most important chronic kidney disease. We previously reported that Smad1 transcriptionally regulates the expression of extracellular matrix in DN. Phenotypic change in mesangial cells (MCs) is a key pathologic event in the progression of DN. The aim of this study is to investigate a novel mechanism underlying chondrogenic phenotypic change in MCs that results in the development of DN. MCs showed chondrogenic potential in a micromass culture, and BMP4 induced the expression of chondrocyte markers (SRY-related HMG Box 9 (SOX9) and type II collagen (COL2)). Advanced glycation end products induced the expression of chondrocyte marker proteins downstream from the BMP4-Smad1 signaling pathway in MCs. In addition, hypoxia also induced the expression of BMP4, hypoxia-inducible factor-1 (HIF-1), and chondrocyte markers. Overexpression of SOX9 caused ectopic expression of proteoglycans and COL2 in MCs. Furthermore, forced expression of Smad1 induced chondrocyte markers as well. Dorsomorphin inhibited these inductions. Glomerular expressions of HIF-1, BMP4, and chondrocyte markers were observed in diabetic nephropathy mice. These positive stainings were observed in mesangial sclerotic lesions. SOX9 was partially colocalized with HIF-1 and BMP4 in diabetic glomeruli. BMP4 knock-in transgenic mice showed not only similar pathological lesions to DN, but also the induction of chondrocyte markers in the sclerotic lesions. Here we demonstrate that HIF-1 and BMP4 induce SOX9 expression and subsequent chondrogenic phenotype change in DN. The results suggested that the transdifferentiation of MCs into chondrocyte-like cells in chronic hypoxic stress may result in irreversible structural change in DN.
(キーワード): Animals / Antigens, Differentiation / Bone Morphogenetic Protein 4 / Cell Line / Cell Transdifferentiation / Chondrocytes / Collagen Type II / Diabetic Nephropathies / Gene Expression Regulation / Glomerular Mesangium / Glycosylation End Products, Advanced / Hypoxia-Inducible Factor 1, alpha Subunit / Mice / Mice, Transgenic / SOX9 Transcription Factor / Smad1 Protein
(出版サイトへのリンク): ● Publication site (DOI): 10.1074/jbc.M111.244541
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21795715; ● Search Scopus @ Elsevier (PMID): 21795715; ● Search Scopus @ Elsevier (DOI): 10.1074/jbc.M111.244541

(DOI: 10.1074/jbc.M111.244541, PubMed: 21795715) Tatsuya Tominaga, Hideharu Abe, Otoya Ueda, Chisato Goto, Kunihiko Nakahara, Taichi Murakami, Takeshi Matsubara, Akira Mima, Kojiro Nagai, Toshikazu Araoka, Seiji Kishi, Naoshi Fukushima, Kou-ichi Jishage and Toshio Doi :
Activation of bone morphogenetic protein 4 signaling leads to glomerulosclerosis that mimics diabetic nephropathy.,
The Journal of Biological Chemistry, Vol.286, No.22, 20109-20116, 2011.

(要約): Diabetic nephropathy (DN) is the most common cause of chronic kidney disease. We have previously reported that Smad1 transcriptionally regulates the expression of extracellular matrix (ECM) proteins in DN. However, little is known about the regulatory mechanisms that induce and activate Smad1. Here, bone morphogenetic protein 4 (Bmp4) was found to up-regulate the expression of Smad1 in mesangial cells and subsequently to phosphorylate Smad1 downstream of the advanced glycation end product-receptor for advanced glycation end product signaling pathway. Moreover, Bmp4 utilized Alk3 and affected the activation of Smad1 and Col4 expressions in mesangial cells. In the diabetic mouse, Bmp4 was remarkably activated in the glomeruli, and the mesangial area was expanded. To elucidate the direct function of Bmp4 action in the kidneys, we generated transgenic mice inducible for the expression of Bmp4. Tamoxifen treatment dramatically induced the expression of Bmp4, especially in the glomeruli of the mice. Notably, in the nondiabetic condition, the mice exhibited not only an expansion of the mesangial area and thickening of the basement membrane but also remarkable albuminuria, which are consistent with the distinct glomerular injuries in DN. ECM protein overexpression and activation of Smad1 in the glomeruli were also observed in the mice. The mesangial expansion in the mice was significantly correlated with albuminuria. Furthermore, the heterozygous Bmp4 knock-out mice inhibited the glomerular injuries compared with wild type mice in diabetic conditions. Here, we show that BMP4 may act as an upstream regulatory molecule for the process of ECM accumulation in DN and thereby reveals a new aspect of the molecular mechanisms involved in DN.
(キーワード): Albuminuria / Animals / Bone Morphogenetic Protein 4 / Diabetic Nephropathies / 細胞外マトリックス (extracellular matrix) / Glomerulosclerosis, Focal Segmental / Glycosylation End Products, Advanced / Mesangial Cells / Mice / ノックアウトマウス (knockout mice) / Smad1 Protein / Up-Regulation
(出版サイトへのリンク): ● Publication site (DOI): 10.1074/jbc.M110.179382
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21471216; ● Search Scopus @ Elsevier (PMID): 21471216; ● Search Scopus @ Elsevier (DOI): 10.1074/jbc.M110.179382

(DOI: 10.1074/jbc.M110.179382, PubMed: 21471216) Akira Mima, Hideharu Abe, Kojiro Nagai, Hidenori Arai, Takeshi Matsubara, Makoto Araki, Kazuo Torikoshi, Tatsuya Tominaga, Noriyuki Iehara, Atsushi Fukatsu, Toru Kita and Toshio Doi :
Activation of Src mediates PDGF-induced Smad1 phosphorylation and contributes to the progression of glomerulosclerosis in glomerulonephritis.,
PLoS ONE, Vol.6, No.3, e17929, 2011.

(要約): Platelet-derived growth factor (PDGF) plays critical roles in mesangial cell (MC) proliferation in mesangial proliferative glomerulonephritis. We showed previously that Smad1 contributes to PDGF-dependent proliferation of MCs, but the mechanism by which Smad1 is activated by PDGF is not precisely known. Here we examined the role of c-Src tyrosine kinase in the proliferative change of MCs. Experimental mesangial proliferative glomerulonephritis (Thy1 GN) was induced by a single intravenous injection of anti-rat Thy-1.1 monoclonal antibody. In Thy1 GN, MC proliferation and type IV collagen (Col4) expression peaked on day 6. Immunohistochemical staining for the expression of phospho-Src (pSrc), phospho-Smad1 (pSmad1), Col4, and smooth muscle -actin (SMA) revealed that the activation of c-Src and Smad1 signals in glomeruli peaked on day 6, consistent with the peak of mesangial proliferation. When treated with PP2, a Src inhibitor, both mesangial proliferation and sclerosis were significantly reduced. PP2 administration also significantly reduced pSmad1, Col4, and SMA expression. PDGF induced Col4 synthesis in association with increased expression of pSrc and pSmad1 in cultured MCs. In addition, PP2 reduced Col4 synthesis along with decreased pSrc and pSmad1 protein expression in vitro. Moreover, the addition of siRNA against c-Src significantly reduced the phosphorylation of Smad1 and the overproduction of Col4. These results provide new evidence that the activation of Src/Smad1 signaling pathway plays a key role in the development of glomerulosclerosis in experimental glomerulonephritis.
(キーワード): Animals / Blotting, Western / Disease Progression / Glomerulonephritis / 免疫組織化学 (immunohistochemistry) / Mice / Mice, Inbred C57BL / リン酸化 (phosphorylation) / Platelet-Derived Growth Factor / Proto-Oncogene Proteins pp60(c-src) / RNA, Small Interfering / シグナル伝達 (signal transduction) / Smad1 Protein
(出版サイトへのリンク): ● Publication site (DOI): 10.1371/journal.pone.0017929
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21445358; ● Search Scopus @ Elsevier (PMID): 21445358; ● Search Scopus @ Elsevier (DOI): 10.1371/journal.pone.0017929

(DOI: 10.1371/journal.pone.0017929, PubMed: 21445358) Taichi Murakami, Hideharu Abe, Kojiro Nagai, Tatsuya Tominaga, Norimichi Takamatsu, Toshikazu Araoka, Seiji Kishi, Toshikazu Takahashi, Akira Mima, Yoshimi Takai, Jeffrey B. Kopp and Toshio Doi :
Trophoblast glycoprotein: possible candidate mediating podocyte injuries in glomerulonephritis.,
American Journal of Nephrology, Vol.32, No.6, 505-521, 2010.

(要約): trophoblast glycoprotein (Tpbg), a 72-kDa transmembrane glycoprotein, is known to regulate the phenotypes of epithelial cells by modifying actin organization and cell motility. Recently, a microarray study showed that Tpbg is upregulated in Thy1 glomerulonephritis (Thy1 GN). We hypothesized that Tpbg regulates cytoskeletal rearrangement and modulates phenotypic alteration in podocytes under pathological conditions.
(キーワード): 分散分析 (analysis of variance) / Animals / Cells, Cultured / Focal Adhesions / Glomerulonephritis, Membranoproliferative / Isoantibodies / Kidney Glomerulus / Male / Membrane Glycoproteins / Mice / Models, Animal / Podocytes / RNA, Messenger / Rats / Rats, Wistar / Statistics, Nonparametric / Stress Fibers / Transfection / Transforming Growth Factor beta / Up-Regulation
(出版サイトへのリンク): ● Publication site (DOI): 10.1159/000321366
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 20980737; ● Summary page in Scopus @ Elsevier: 2-s2.0-77958492409

(DOI: 10.1159/000321366, PubMed: 20980737, Elsevier: Scopus) Norimichi Takamatsu, Hideharu Abe, Tatsuya Tominaga, Kunihiko Nakahara, Yumi Ito, Yoko Okumoto, Jiyoong Kim, Masafumi Kitakaze and Toshio Doi :
Risk factors for chronic kidney disease in Japan: a community-based study.,
BMC Nephrology, Vol.10, 34, 2009.

(要約): Chronic kidney disease (CKD) is increasingly being recognized as a predictor for both end-stage renal disease and cardiovascular disease. The present study, conducted on individuals from a community in Arita, Japan, was designed to evaluate biomarkers that can be used to determine the associated factors for CKD.
(キーワード): Adult / Aged / Aged, 80 and over / Cross-Sectional Studies / Female / Glomerular Filtration Rate / Humans / 日本 (Japan) / Kidney Failure, Chronic / Male / Middle Aged / Residence Characteristics / Risk Factors / Young Adult
(出版サイトへのリンク): ● Publication site (DOI): 10.1186/1471-2369-10-34
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 19860890; ● Search Scopus @ Elsevier (PMID): 19860890; ● Search Scopus @ Elsevier (DOI): 10.1186/1471-2369-10-34

(DOI: 10.1186/1471-2369-10-34, PubMed: 19860890) Toshio Doi, Akira Mima, Takeshi Matsubara, Tatsuya Tominaga, Hidenori Arai and Hideharu Abe :
The current clinical problems for early phase of diabetic nephropathy and approach for pathogenesis of diabetic nephropathy.,
Diabetes Research and Clinical Practice, Vol.82, No.Suppl 1, S21-4, 2008.

(要約): The important clinical problems of diabetic nephropathy are both proteinuria and decrease of renal function. Pathological analysis showed decrease of GFR was correlated to degree of mesangial expansion but not thickening of GBM nor the other findings in human type 1 diabetic nephropathy. From the perspective in renal dysfunction, mesangial matrix expansion was crucial for diabetic nephropathy. However, there was no difference of mesangial expansion between normal and microalbuminuria stage in type 1 and 2 diabetes mellitus (DM). On the other hand, microalbuminuria definitely shows a key related factor for cardiovascular events, but it does not indicate a clear interaction for glomerulosclerosis. We need to search a new clinical marker for renal injury. We have first shown that Smad1 is a transcription factor for alpha1 and 2 of type 4 collagen (Col4), which is a major component of glomerulosclerosis. We have also identified Smad1 is a critical responsible molecule for developing glomerulosclerosis in rat diabetic nephropathy. We have found the good correlation between glomerulosclerosis and urinary Smad1 but not between glomerulosclerosis and urine albumin. These data suggests that urine Smad1 is a promising clinical marker for underlying glomerular damages in early stage diabetic nephropathy. The study also implicates that angiotensin II (AngII)-Src-Smad1 signaling pathway has played a key role for development of diabetic nephropathy. These suggest that it is necessary to clarify the whole mechanism related to Smad1 to identify the pathogenesis of diabetic nephropathy.
(キーワード): Animals / 動脈硬化 (atherosclerosis) / Biological Markers / Diabetic Nephropathies / Disease Models, Animal / Glomerular Mesangium / Kidney Glomerulus / Mesangial Cells / Rats / Smad1 Protein
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.diabres.2008.09.013
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18842318; ● Search Scopus @ Elsevier (PMID): 18842318; ● Search Scopus @ Elsevier (DOI): 10.1016/j.diabres.2008.09.013

(DOI: 10.1016/j.diabres.2008.09.013, PubMed: 18842318) Akira Mima, Hidenori Arai, Takeshi Matsubara, Hideharu Abe, Kojiro Nagai, Yukinori Tamura, Kazuo Torikoshi, Makoto Araki, Hiroshi Kanamori, Toshikazu Takahashi, Tatsuya Tominaga, Motokazu Matsuura, Noriyuki Iehara, Atsushi Fukatsu, Toru Kita and Toshio Doi :
Urinary Smad1 is a novel marker to predict later onset of mesangial matrix expansion in diabetic nephropathy.,
Diabetes, Vol.57, No.6, 1712-1722, 2008.

(要約): We reported that Smad1 is a key transcriptional factor for mesangial matrix expansion in diabetic nephropathy. In this study, we examined whether urinary Smad1 in an early phase of diabetes can predict later development of glomerulosclerosis in diabetic nephropathy and how an angiotensin II type 1 receptor blocker (ARB) can modulate structural changes and urinary markers.
(キーワード): Angiotensin II Type 1 Receptor Blockers / Animals / Biological Markers / Diabetes Mellitus, Experimental / Diabetic Nephropathies / Glomerular Mesangium / Imidazoles / Kidney / Male / Mice / Mice, Inbred C57BL / Rats / Rats, Sprague-Dawley / Smad1 Protein / Tetrazoles
(出版サイトへのリンク): ● Publication site (DOI): 10.2337/db07-1726
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 18285555; ● Search Scopus @ Elsevier (PMID): 18285555; ● Search Scopus @ Elsevier (DOI): 10.2337/db07-1726

(DOI: 10.2337/db07-1726, PubMed: 18285555)

MISC

研究者総覧に該当データはありませんでした。

総説・解説

荒岡利和, 安部秀斉, 長井幸二郎, 美馬晶, 冨永辰也, 松浦元一, 村上太一, 岸誠司, 繁田令子, 岸史, 吉川和寛, 土井俊夫 :
2型糖尿病原因遺伝子TCF7L2を介した糖尿病性腎症感受性遺伝子ALK1の分子調節機構の解析,
Diabetes Frontier, Vol.21, No.5, 614, 2010年10月.

講演・発表

Masanori Tamaki, Tatsuya Tominaga, Yui Fujita, Taichi Murakami, Seiji Kishi, Hideharu Abe, Kojiro Nagai and Toshio Doi :
A Novel All-Trans Retinoic Acid Therapy Directly Suppresses Bone Morphogenetic Protein 4 in Mouse Diabetic Nephropathy,
KIDNEY WEEK 2019 American Society of Nephrology, Nov. 2019. Masanori Tamaki, Tatsuya Tominaga, Yui Fujita, Seiji Kishi, Taichi Murakami, Kojiro Nagai, Hideharu Abe and Toshio Doi :
Mesangial Matrix Expansion Attenuated by All-Trans Retinoic Acid Through Direct Suppression of Bone Morphogenetic Protein 4 in Mouse Diabetic Nephropathy,
KIDNEY WEEK 2018 American Society of Nephrology, Oct. 2018. Yui Fujita, Tatsuya Tominaga, Masanori Tamaki, Taichi Murakami, Seiji Kishi, Kojiro Nagai, Hideharu Abe and Toshio Doi :
Palovarotene, Selective Retinoic Receptor- Agonist, Inhibited Both BMP4 and TGF- Signaling Pathways in Diabetic Nephropathy,
KIDNEY WEEK 2017 American Society of Nephrology, Nov. 2017. Masanori Tamaki, Tatsuya Tominaga, Yui Fujita, Seiji Kishi, Taichi Murakami, Kojiro Nagai, Hideharu Abe and Toshio Doi :
Glomerulosclerosis Attenuated by Retinoic Acid through Bone Morphogenetic Protein 4 Suppression in Mice with Streptozotocin-Induced Diabetes,
KIDNEY WEEK 2017 American Society of Nephrology, Nov. 2017. Kojiro Nagai, Tatsuya Tominaga, Taichi Murakami, Eriko Shibata, Seiji Kishi, Motokazu Matsuura, Hideharu Abe and Toshio Doi :
In vivo evidence of mTORC1-S6 kinase pathway involvement in the development of glomerulosclerosis in human IgA nephropathy,
KIDNEY WEEK 2016 American Society of Nephrology, Nov. 2016. Yui Fujita, Tatsuya Tominaga, Taichi Murakami, Seiji Kishi, Kojiro Nagai, Hideharu Abe and Toshio Doi :
The Role of BMP4 Signal Pathway on the Podocyte Injury in Diabetic Early Stage,
ASN Kidney week 2016, Nov. 2016. Tatsuya Tominaga, Toshio Doi and Kanwar S Yashpal :
Myo-inositol oxygenase (MIOX) contributes to renal tubular injury through ER stress and a hyaluronic acid (HA) production,
American Society of Nephrology Kidney Week 2015, Nov. 2015. Tupe Santosh Rashmi, Tatsuya Tominaga and Kanwar S. Yashpal :
Advanced Glycation End Products Induces Myo-Inositol Oxygenase via Activation of PI3K Pathwayin Proximal Tubular Epithelial Cells,
American Society of Nephrology Kidney Week 2014, Nov. 2014. Zhan Ming, Tatsuya Tominaga, Sun Lin and Kanwar S Yashpal :
Myo-Inositol Oxygenase (MIOX) Modulates Mitochondrial Dynamics and Autophagy in Diabetic Tubulopathy,
American Society of Nephrology Kidney Week 2013, Nov. 2013. Tatsuya Tominaga, Zhan Ming and Kanwar S Yashpal :
Relevance of Myo-Inositol Oxigenase (MIOX) in Renal Tubular Injury in Obesity/Metabolic Syndrome,
American Society of Nephrology Kidney Week 2013, Nov. 2013. Tatsuya Tominaga, Hideharu Abe, Kojiro Nagai, Akira Mima, Seiji Kishi, K Jishage, N Fukushima and Toshio Doi :
Role of BMP4 for regulating podocyte injury in the diabetic nephropathy.,
American Society for Cell biology, San Francisco, Dec. 2012. Masashi Miyoshi, Kojiro Nagai, Takei Kake, Naoshi Fukushima, Motokazu Matsuura, Eriko Shibata, Satoshi Yamada, Kazuhiro Yoshikawa, Akira Mima, Fumi Kishi, Seiji Kishi, Tatsuya Tominaga, Hideharu Abe and Toshio Doi :
Expression of Gas6 and Axl in Human IgA Nephropathy. ~A Possible Involvement of Gas6 in Podocyte Injury~,
American Society of Nephrology Kidney Week 2012, San Diego, Nov. 2012. Tatsuya Tominaga, Hideharu Abe, Kojiro Nagai, Seiji Kishi, Akira Mima and Toshio Doi :
BMP4 regulates podocyte injury in the diabetic nephropathy,
Diabetes, Philadelphia, May 2012. Tatsuya Tominaga, Hideharu Abe, Kojiro Nagai, Seiji Kishi and Toshio Doi :
BMP4 regulates podocyte injury in the diabetic nephropathy,
The 1st Asia-Pacific Vascular Biology Meeting, Dec. 2011. Tatsuya Tominaga, Hideharu Abe, Kojiro Nagai, Seiji Kishi, Taichi Murakami and Toshio Doi :
BMP4 regulates podocyte injury in the diabetic nephropathy,
Journal of the American Society of Nephrology, Nov. 2011. Akira Mima, H Arai, T Matsubara, Hideharu Abe, H Kanamori, E Sumi, Tatsuya Tominaga, T Takahashi, Motokazu Matsuura, N Iehara, A Fukatsu, T Kita and Toshio Doi :
Angiotensin II type I receptor blocker decreases urinary Smad1, a marker for mesangial matrix expansion in diabetic nephropathy,
2007 World Congress of Nephrology, リオデジャネイロ, Apr. 2007. 宮城将展, 若林龍矢, 櫻井明子, 冨永辰也 :
腎脂質代謝異常とERストレスの作用機序について「ApoE欠損動脈硬化症モデルマウスでの検討」,
第46回徳島県医学検査学会, 2022年12月. 越智ありさ, 櫻井明子, 太田浩二, 飛永恭兵, 若林龍矢, 𦚰野修, 右手浩一, 冨永辰也 :
高吸水性ポリマーを用いた新規エクソソーム精製法,
第45回日本分子生物学会年会, 2022年12月. 若林龍矢, 櫻井明子, 越智ありさ, 冨永辰也 :
腎硬化症における小胞体ストレス分子メカニズムの解析,
第45回日本分子生物学会年会, 2022年12月. 若林龍矢, 櫻井明子, 越智ありさ, 冨永辰也 :
小胞体ストレス誘導下における腎線維化とBMP4/CHOPの機能解析,
第95回日本生化学会大会, 2022年11月. 高橋朔良, 瀧澤伶奈, 辻大輔, 伊藤孝司, 冨永辰也, 柏田良樹, 田中直伸 :
神田茶「茶汁」に含まれるカテキン代謝物の構造と生物活性,
第9回食品薬学シンポジウム, 118-120, 2022年10月. 若林龍矢, 田村花菜子, 櫻井明子, 冨永辰也 :
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第45回徳島県医学検査学会, 2021年12月. 田村花菜子, 若林龍矢, 櫻井明子, 冨永辰也 :
血管内皮特異的BMP4発現マウスへの高脂肪食負荷による影響について,
第45回徳島県医学検査学会, 2021年12月. 田蒔昌憲, 小野広幸, 西村賢二, 柴田恵理子, 上田紗代, 越智ありさ, 冨永辰也, 長井幸二郎, 安部秀斉 :
骨形成因子4(BMP4)はメサンギウム細胞のミトコンドリア障害を惹起する,
日本腎臓学会誌, Vol.62, No.4, 282, 2020年7月. 武村真季, 冨永辰也, 三橋英, 長井幸二郎, 安部秀斉 :
糖尿病における高タンパク食が腎臓に与える影響について②,
徳島県臨床検査技師会誌第43回徳島県医学検査学会抄録集, 2019年12月. 三橋英, 冨永辰也, 武村真季, 長井幸二郎, 安部秀斉 :
糖尿病における高タンパク食が腎臓に与える影響について①,
徳島県臨床検査技師会誌第43回徳島県医学検査学会抄録集, 2019年12月. 小野広幸, 安部秀斉, 田蒔昌憲, 冨永辰也, 岸史, 岸誠司, 村上太一, 長井幸二郎, 土井俊夫 :
Smad1とSmad3の新規相互リン酸化制御機構による糖尿病性腎症の病態解析,
第62回日本腎臓学会学術総会, 2019年6月. 岸史, 長井幸二郎, 冨永辰也, 田蒔昌憲, 柴田恵理子, 村上太一, 岸誠司, 肥塚靖彦, 皆川直人, 一圓剛, 高松典通, 土井俊夫 :
尿中IV型コラーゲンは非糖尿病一般住民における糸球体濾過率低下に関与する,
第61回日本腎臓学会学術総会, 2018年6月. 田蒔昌憲, 冨永辰也, 藤田結衣, 岸史, 岸誠司, 村上太一, 長井幸二郎, 安部秀斉, 土井俊夫 :
レチノイン酸はBmp4遺伝子発現を直接制御して糖尿病マウスの糸球体硬化を改善する,
第61回日本腎臓学会学術総会, 2018年6月. 藤田結衣, 冨永辰也, 櫻井明子, 長井幸二郎, 安部秀斉, 土井俊夫 :
BMP4シグナルが作用するポドサイト障害発生機序の解析,
第255回徳島医学会学術集会, 2017年8月. 田蒔昌憲, 冨永辰也, 藤田結衣, 松浦元一, 岸誠司, 村上太一, 長井幸二郎, 安部秀斉, 土井俊夫 :
レチノイン酸による糖尿病性糸球体硬化分子BMP4制御機構の検討,
第60回日本腎臓学会学術総会, 2017年5月. 中川裕美, 冨永辰也, 櫻井明子, 藤田結衣, 安部秀斉, 長井幸二郎, 土井俊夫 :
ポドサイトへのBMP4過剰発現による腎組織への影響,
徳島県臨床検査技師会誌第40回徳島県医学検査学会抄録集, 28, 2016年12月. 櫻井明子, 安部秀斉, 冨永辰也, 三好雅士, 土井俊夫 :
糖尿病のポドサイト障害におけるCXCR7シグナル異常,
中四国支部医学検査学会(第48回), 2015年11月. 櫻井明子, 林早苗, 冨永辰也, 藤田結衣, 安部尚子, 土井俊夫, 安部秀斉 :
糖尿病性腎症におけるmiR-21のポドサイトに対するPDCD4制御を介した抗アポトーシス効果,
第36回日本分子生物学会年会, 2013年12月. Fujita Yui, Akiko Sakurai, Tatsuya Tominaga, Hayashi Sanae, Naoko Abe, Toshio Doi and Hideharu Abe :
Multiple regulatory pathways of BMP-Smad axis through a sclerosis-specific basic HLH transcription factor in diabetic nephropathy.,
第86回日本生化学会大会, Sep. 2013. 三好雅士, 長井幸二郎, 掛武威, 福島直, 松浦元一, 柴田恵理子, 吉川和寛, 山口邦久, 井崎博文, 美馬晶, 冨永辰也, 安部秀斉, 土井俊夫 :
ヒトIgA腎症におけるGas6とその受容体Dtkの関与,
第56回日本腎臓学会学術総会, 2013年5月. 冨永辰也, 安部秀斉, 長井幸二郎, 岸誠司, 美馬晶, 土井俊夫 :
BMP4シグナル活性化はポドサイト障害およびメサンギウム基質増生を進展させる,
第3回分子腎臓フォーラム, 2012年9月. 冨永辰也, 安部秀斉, 長井幸二郎, 岸誠司, 美馬晶, 土井俊夫 :
糖尿病性腎症におけるポドサイト障害に作用するBMP4の分子機構,
第4回腎疾患と高血圧研究会, 2012年7月. 武田英二, 山本浩範, 大谷彩子, 香西美奈, 池田翔子, 中橋乙起, 竹谷豊, 冨永辰也, 土井俊夫 :
1.局所的CYP27B1発現亢進による異所性石灰化(第334回会議研究発表要旨,脂溶性ビタミン総合研究委員会),
ビタミン, Vol.86, No.5, 358-359, 2012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): 1390282680677126528

(CiNii: 1390282680677126528) 三好雅士, 長井幸二郎, 掛武威, 福島直, 松浦元一, 柴田恵理子, 山田諭, 渡瀬謙仁, 吉川和寛, 岸史, 岸誠司, 山口邦久, 井崎博文, 冨永辰也, 安部秀斉, 土井俊夫 :
ヒトIgA腎症における増殖因子Gas6とその受容体Axlの発現,
第55回日本腎臓学会学術総会, 2012年6月. 武田英二, 山本浩範, 大谷彩子, 香西美奈, 池田翔子, 中橋乙起, 竹谷豊, 冨永辰也, 土井俊夫 :
局所的CYP27B1発現亢進による異所性石灰化,
ビタミン, Vol.86, No.5-6, 358-359, 2012年6月. 冨永辰也, 安部秀斉, 長井幸二郎, 岸誠司, 土井俊夫 :
ポドサイト障害におけるアポトーシス誘導メカニズムに関する新しい知見,
第4回四国ネフロロジー研究会, 2012年3月. 大谷彩子, 山本浩範, 香西美奈, 池田翔子, 中橋乙起, 竹谷豊, 冨永辰也, 土井俊夫, 武田英二 :
リン·ビタミンD代謝異常による異所性石灰化発症の分子機構の解明,
第244回徳島医学会学術集会, 2012年2月. 冨永辰也, 安部秀斉 :
BMP4における糖尿病性腎症の発症とアルブミン尿排泄に関する新たな機序,
第54回日本糖尿病学会年次学術集会, 2011年5月. 冨永辰也, 安部秀斉, 長井幸二郎, 岸誠司, 土井俊夫 :
糖尿病性腎症発症とアルブミン尿排泄に関与するBMP4の分子機構,
第52回日本生化学会中国・四国支部例会, 2011年5月. 冨永辰也, 安部秀斉, 村上太一, 岸誠司, 長井幸二郎, 土井俊夫 :
BMP4における糖尿病性腎症の発症とアルブミン尿排泄機序に関する新たな機序,
糖尿病, Vol.54, No.Suppl.1, S-326, 2011年4月. 冨永辰也, 安部秀斉 :
腎発生に必須なBMP4が関与する糖尿病性腎症発症の分子機構,
第83回日本生化学会大会, 2010年12月. 冨永辰也, 安部秀斉 :
腎発生に必須なBMP4が関与する糖尿病性腎症発症の分子機構,
第33回日本分子生物学会年会, 2010年12月. 松原雄, 安部秀斉, 上田乙也, 寺社下浩一, 冨永辰也, 後藤千里, 美馬晶, 長井幸二郎, 荒木真, 鳥越和雄, 松浦元一, 家原典之, 木野崎雅彦, 福島直, 深津敦司, 荒井秀典, 土井俊夫 :
IV型コラーゲンの転写制御因子Smad1は骨形成因子BMP4を介して糖尿病性腎症進展に中心的役割を果たす,
糖尿病合併症, Vol.24, No.Suppl.1, 107, 2010年10月. 吉川和寛, 安部秀斉, 冨永辰也 :
CKD患者の血中MGPおよび関連分子と，病態に関する検討,
第55回日本透析医学会学術集会・総会, 2010年6月. 高松典通, 安部秀斉, 冨永辰也, 長井幸二郎, 土井俊夫 :
地域住民健診におけるアルブミン尿検出の有用性,
第53回日本腎臓学会学術総会, 2010年6月. 岸誠司, 安部秀斉, 岸史, 吉川和寛, 荒岡利和, 村上太一, 冨永辰也, 長井幸二郎, 美馬晶, 家原典之, 秋山治彦, 土井俊夫 :
メサンギウム細胞(MCs)の軟骨細胞形質獲得と低酸素下での不可逆的な腎機能低下の関連,
日本腎臓学会誌, Vol.52, No.3, 322, 2010年5月. 松原雄, 安部秀斉, 上田乙也, 寺社下浩一, 美馬晶, 後藤千里, 冨永辰也, 荒木真, 鳥越和雄, 長井幸二郎, 家原典之, 福島直, 木野崎雅彦, 深津敦司, 荒井秀典, 土井俊夫 :
糖尿病性腎症に関わる新たな治療標的分子の検討,
日本腎臓学会誌, Vol.52, No.3, 288, 2010年5月. 高松典通, 安部秀斉, 冨永辰也, 長井幸二郎, 土井俊夫 :
地域住民健診におけるアルブミン尿検出の有用性,
日本腎臓学会誌, Vol.52, No.3, 299, 2010年5月. 吉川和寛, 安部秀斉, 冨永辰也, 岸誠司, 岸史, 荒岡利和, 村上太一, 近藤直樹, 松浦元一, 長井幸二郎, 土井俊夫, 中村雅将, 土田健司, 水口潤, 川島周 :
CKD患者の血中MGPおよび関連分子と，病態に関する検討,
日本透析医学会雑誌, Vol.43, No.Suppl.1, 682, 2010年5月. 冨永辰也, 安部秀斉, 長井幸二郎, 美馬晶, 村上太一, 荒岡利和, 岸誠司, 繁田令子, 土井俊夫 :
糖尿病性腎症の発症・進展にBMP4/Smad1経路が重要な作用をおよぼす,
日本臨床分子医学会学術総会プログラム・抄録集, 66, 2010年4月. 高松典通, 安部秀斉, 冨永辰也, 奥本陽子 :
65歳以上の腎機能低下関連因子--横断的研究による検討,
第21回日本老年医学会四国地方会総会, 2010年2月. 村上太一, 安部秀斉, 冨永辰也, 荒岡利和, 岸誠司, 高松典通, 美馬晶, 長井幸二郎, 高井義美, 土井俊夫 :
糸球体上皮細胞のアクチン骨格制御におけるTrophoblast glycoproteinの機能,
日本生化学会大会プログラム・講演要旨集, 2P-697, 2009年10月. 荒岡利和, 安部秀斉, 松浦元一, 村上太一, 岸誠司, 岸史, 吉川和寛, 繁田令子, 長井幸二郎, 冨永辰也, 土井俊夫 :
2型糖尿病原因遺伝子TCF7L2を介した糖尿病性腎症感受性遺伝子ALK1の分子調節機構の解析,
日本生化学会大会プログラム・講演要旨集, 4T10a-18, 2009年9月. 冨永辰也, 安部秀斉, 長井幸二郎, 美馬晶, 村上太一, 荒岡利和, 岸誠司, 繁田令子, 上田乙也, 後藤千里, 寺社下浩一, 木野崎雅彦, 福島直, 土井俊夫 :
糖尿病性腎症の発症・進展にBMP4/Smad1経路が重要な作用をおよぼす,
日本生化学会大会プログラム・講演要旨集, 4T10a-14, 2009年9月. 荒岡利和, 安部秀斉, 冨永辰也, 村上太一, 繁田令子, 岸誠司, 吉川和寛, 岸史, 近藤直樹, 松浦元一, 高橋利和, 長井幸二郎, 美馬晶, 平野隆弘, 土井俊夫 :
糖尿病性腎症の疾患感受性分子ALK1/Smad1のTCF7L2による分子調整機構の解析,
日本腎臓学会誌, Vol.51, No.3, 241, 2009年4月. 荒岡利和, 安部秀斉, 松浦元一, 村上太一, 岸誠司, 冨永辰也, 繁田令子, 吉川和寛, 岸史, 美馬晶, 長井幸二郎, 高橋利和, 平野隆弘, 高松典通 :
TCF7L2を介した糖尿病性腎症における疾患感受性因子ALK1の分子調整機構の解析,
糖尿病, Vol.52, No.Suppl.1, S-220, 2009年. 冨永辰也, 安部秀斉, 長井幸二郎, 村上太一, 荒岡利和, 岸誠司, 繁田令子, 吉川和寛, 岸史, 近藤直樹, 松浦元一, 高橋利和, 上田乙也, 寺社下浩一, 福島直, 美馬晶, 土井俊夫 :
糖尿病性腎症発症・進展に関わる分子機構の解析,
日本腎臓学会誌, Vol.51, No.3, 276, 2009年. 村上太一, 吉川和寛, 繁田令子, 岸誠司, 荒岡利和, 冨永辰也, 安部秀斉, 土井俊夫 :
メサンギウム増殖性腎炎モデルにおける腎糸球体上皮細胞でのアクチン関連分子Trophoblast glycoprotein(Tpbg)の検討,
生化学, Vol.80, No.7, 687, 2008年7月.

(キーワード): Pregnancy-Specific Beta 1-Glycoproteins / トロホブラスト / 腎糸球体(病理学) / 糸球体腎炎(実験的,病理学) / 疾患モデル(動物) / 上皮細胞(病理学) / 免疫組織化学 (immunohistochemistry) / RT-PCR法 / 糸球体腎炎-増殖性(実験的,病理学) / ラット (rat) / 動物 (animal)

荒岡利和, 安部秀斉, 冨永辰也, 村上太一, 土井俊夫 :
糖尿病性腎症の進行決定因子ALK1の発現調節機構の解析,
日本腎臓学会誌, Vol.50, No.3, 265, 2008年. 松浦元一, 安部秀斉, 冨永辰也, 安部尚子, 高橋利和, 福島直, 土井俊夫 :
糖尿病性腎症の進行過程におけるElf3の役割,
日本腎臓学会誌, Vol.48, No.3, 286, 2006年. 冨永辰也, 安部秀斉, 土井俊夫 :
早期腎症診断における尿中Smad1の有用性,
医学検査, Vol.54, No.4, 642, 2005年. 冨永辰也, 安部秀斉, 松浦元一, 土井俊夫 :
糖尿病性腎症の進行過程におけるBMP4の役割,
日本腎臓学会誌, Vol.47, No.3, 259, 2005年. 坂東美和, 細井英司, 竹中真由美, 冨永辰也, 松本真弓, 廣瀬政雄 :
血液細胞分化過程における血液型H抗原の発現解析,
日本輸血学会雑誌, Vol.50, No.6, 799-800, 2004年.

研究会・報告書: 冨永辰也, 土井俊夫, Kanwar S Yashpal :
メタボリックシンドロームにおける尿細管障害でのMyo-inositol oxygenase (MIOX)の発現メカニズム,
第7回四国ネフロロジー研究会, 2015年3月. 武田英二, 山本浩範, 大谷彩子, 香西美奈, 池田翔子, 中橋乙起, 竹谷豊, 冨永辰也, 土井俊夫 :
局所的CYP27B1発現亢進による異所性石灰化,
第334回脂溶性ビタミン総合研究委員会, 2012年3月. 冨永辰也, 安部秀斉, 長井幸二郎, 美馬晶, 村上太一 :
腎発生に必須なBMP4が関与する糖尿病性腎症発症の分子機構,
第3回四国ネフロロジー研究会, 2011年3月. 安部秀斉, 冨永辰也, 土井俊夫 :
BMP4活性化によるアルブミン尿出現の新規メカニズムの解明,
第2回腎疾患と高血圧研究会, 2010年7月. 美馬晶, 荒井秀典, 松原雄, 金森弘志, 角栄里子, 家原典之, 深津敦司, 安部秀斉, 高橋利和, 冨永辰也, 北徹, 土井俊夫 :
アンギオテンシンII受容体拮抗薬は糖尿病性腎症においてSrc/Smad1系を抑制することにより糸球体硬化を抑制する,
シンポジウム糖尿病, 2005年10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: 多元的フェロトーシス治療に基づく慢性腎臓病治療戦略の開発 (研究課題/領域番号: 23K07674 )
ポドサイトの活性化シグナルの解析による各種腎障害の鑑別法の開発 (研究課題/領域番号: 21K07367 )
DKDが近年増加している原因の分子メカニズムの解明 (研究課題/領域番号: 20K08593 )
メサンギウム細胞でのオートファジーを介した慢性腎臓病の病態解明と評価治療法の樹立 (研究課題/領域番号: 19K08705 )
糖尿病における進行性腎障害の病態特異的バイオマーカー樹立と修復機構解明 (研究課題/領域番号: 18K08245 )
糖尿病性腎症における特異的ポドサイト障害分子の同定と尿中バイオマーカーの樹立 (研究課題/領域番号: 18K07415 )
サイトカインプロセシング酵素を標的にした新規CKD治療薬の開発 (研究課題/領域番号: 17K09700 )
新規遺伝子改変法によるメサンギウムの糸球体形成と糖尿病性腎症への系譜的役割の解明 (研究課題/領域番号: 16K09619 )
慢性腎臓病(CKD)における糖尿病血管合併症の成因解明 (研究課題/領域番号: 24790848 )
慢性腎臓病糸球体硬化におけるメサンギウム細胞での細胞伝達経路の解析 (研究課題/領域番号: 24591202 )
尿中エクソゾーム解析による非侵襲的腎臓病診断法の確立 (研究課題/領域番号: 23659445 )
RA系非依存的な糖尿病性腎症の発症予測バイオマーカーと分子標的治療法の開発 (研究課題/領域番号: 22390169 )
新規ポドサイト膜糖蛋白Tpbgの機能解析および新規腎炎治療の探索 (研究課題/領域番号: 21591032 )
糖尿病性血管合併症における血中Smad1の測定系構築と有効性の評価 (研究課題/領域番号: 21590628 )
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研究者総覧で最新データを確認する

2024年5月3日更新

専門分野・研究分野: 保健学 (Health Studies)
腎臓病学 (Nephrology)
所属学会・所属協会: 日本臨床衛生検査技師会
日本生化学会
一般社団法人徳島県臨床検査技師会
委員歴・役員歴: 日本臨床衛生検査技師会 ( [2016年4月〜2024年3月])
日本生化学会 ( [2016年4月〜2024年3月])
一般社団法人徳島県臨床検査技師会 (理事 [2016年4月〜2024年3月])
受賞: 2009年10月, 日本生化学会大会優秀プレゼンテーション賞 (日本生化学会)
2010年4月, 日本臨床分子医学会学術奨励賞 (日本臨床分子医学会)
2011年2月, 保健学科教育賞 (徳島大学医学部保健学科)
2012年3月, 岡奨学賞 (大学院ヘルスバイオサイエンス研究部)
2012年3月, Best Teacher of The Year 2011 (大学院ヘルスバイオサイエンス研究部)
2012年7月, 研究奨励賞 (財団法人地域医学研究基金)
2015年12月, Kidney Summit 2015 優秀賞 (Kidney Summit)
2016年3月, 徳島大学大学院医歯薬学研究部長表彰 (徳島大学大学院医歯薬学研究部)
2019年2月, 保健学科教育賞 (徳島大学医学部保健学科)
2021年3月, 令和2年度保健学科教育賞 (徳島大学医学部保健学科)
2021年3月, 徳島大学医学部 (Best Teacher of the Year 2020)
2021年5月, 令和2年度教養教育賞 (教養教育院)
2022年4月, 令和3年度教養教育賞 (教養教育院)
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研究者番号: 80425446

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: 2023/4/1 : 徳島大学, 大学院医歯薬学研究部(医学域), 教授
2018/4/1 – 2022/4/1 : 徳島大学, 大学院医歯薬学研究部(医学域), 准教授
2017/4/1 : 徳島大学, 大学院医歯薬学研究部(医学系), 准教授
2017/4/1 : 徳島大学, 大学院医歯薬学研究部, 准教授
2016/4/1 : 徳島大学, 大学院医歯薬学研究部(医学系), 助教
2011/4/1 – 2014/4/1 : 徳島大学, ヘルスバイオサイエンス研究部, 助教
2012/4/1 : 徳島大学, 大学院・へルスバイオサイエンス研究部, 助教
2010/4/1 – 2012/4/1 : 徳島大学, 大学院・ヘルスバイオサイエンス研究部, 助教
2011/4/1 : 徳島大学, 大学院・ヘルスバイオサイエンス研究科, 助教

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 / 腎臓内科学
小区分53040:腎臓内科学関連

研究代表者以外

生物系 / 医歯薬学 / 境界医学 / 病態検査学
生物系 / 医歯薬学 / 内科系臨床医学 / 腎臓内科学
小区分52010:内科学一般関連
小区分53040:腎臓内科学関連

キーワード

研究代表者

Bmp4 / ポドサイト障害 / アポトーシス / アルブミン尿 / 糖尿病性腎症 / 慢性腎臓病 / サイトカイン / BMP4 / PACE4 / 糖尿病 / 腎硬化症 / DKD / ERR / Estrogen / 糖尿病性腎臓病(DKD) / 動脈硬化 / 高血圧

研究代表者以外

糖尿病 / 血管合併症 / Smad1 / バイオマーカー / BMP4 / MGP / 糸球体腎炎 / 糖膜蛋白 / ポドサイト / Tpbg / アクチン骨格 / TGFβ / 抗体治療 / TGF-β / 糖尿病性腎症 / Sox9 / 抗体医療 / BMP / ALK3/6 / 分子標的治療 / 慢性腎臓病 / エクソゾーム / CKD / エクソソーム / ALK1 / 細胞伝達経路 / メサンギウム細胞 / 糸球体硬化 / mTOR経路 / smad1 / 細胞内シグナル伝達 / 内科 / 発生・分化 / シグナル伝達 / 糸球体用スフェロイド / exosome / Liquid Biopsy / 糸球体様スフェロイド / 早期老化 / nephroid / 修復 / オートファジー / 糖尿病性腎臓病 / ループス腎炎 / 細胞老化 / フェロトーシス

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