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2018 Fiscal Year Annual Research Report

Endothelial autophagy deficiency induces interleukin 6-dependent endothelial mesenchymal transition and organ fibrosis

Research Project

Project/Area Number 16K15472
Research InstitutionKanazawa Medical University

Principal Investigator

古家 大祐  金沢医科大学, 医学部, 教授 (70242980)

Co-Investigator(Kenkyū-buntansha) 金崎 啓造  金沢医科大学, 医学部, 准教授 (60589919)
Project Period (FY) 2016-04-01 – 2019-03-31
Keywords内皮細胞 / オートファジー / 腎臓 / 心臓 / 内皮間葉化 / 線維化 / IL-6
Outline of Annual Research Achievements

臓器線維化の克服は、先進諸国が抱える多彩な健康被害の克服につながる。血管内皮細胞は、サイトカインなどの刺激を受けて間葉系細胞に分化し(EndMT)、臓器線維化に寄与する事が報告されている。オートファジー機構は細胞の恒常性維持に必須であるが、我々は予備的検討でオートファジー不全(Atg5 siRNA過剰投与)が、EndMTを惹起する事を見出した。オートファジー不全誘導EndMTは予想に反して線維性増殖疾患で中心的役割を演じるtransforming growth factor(TGF)-ベータ非依存的であった。この結果はTGF-ベータ阻害を中心に立脚した抗線維化治療戦略の限界も示唆し、EndMT制御を治療標的とするにはオートファジー機構の正常化もしくは、下流のEndMT制御分子を見出す必要がある。本研究の目的はそこにある。
培養内皮細胞において、ATG5 siRNAにてオートファジー不全を惹起するとEndMTが生じること、その作用機構にオートクラインに内皮細胞から分泌されるIL-6が関与することを見出した。
さらに、内皮細胞特異的オートファジー欠損マウス(Atg5endo; Cdh5-Cre Atg5flox/flox mice)においても、EndMTを介した腎臓・心臓の線維化が惹起され、培養内皮細胞の結果と同様に、血中IL-6の増加を介していることを見出した。さらに、それら線維化は高脂肪食負荷にて増悪した。しかし、IL-6中和抗体にて介入すると、それら線維化が改善されるとともに、代謝異常も改善することを見出した。
以上の結果から、内皮細胞のオートファジー機構の保持は内皮細胞の機能保持に重要な役割を果たしていること、内皮細胞オートファジー不全はIL-6依存的にEndMTを介して腎・心臓器線維化に繋がることが明らかとなった。

  • Research Products

    (18 results)

All 2019 2018 Other

All Journal Article (17 results) (of which Peer Reviewed: 17 results,  Open Access: 3 results) Remarks (1 results)

  • [Journal Article] Identification of subgroups of patients with type 2 diabetes with differences in renal function preservation between sglt2 inhibitors and dpp4 inhibitors using a supervised machine learning algorithm (profile study): A Retrospective analysis of a japanese commercial medical database.2019

    • Author(s)
      Zhou FL, Watada H, Tajima Y, Berthelot M, Kang D, Esnault C, Shuto Y, Maegawa H, Koya D.
    • Journal Title

      Diabetes Obes Metab.

      Volume: - Pages: -

    • DOI

      10.1111/dom.13753.

    • Peer Reviewed
  • [Journal Article] The impact of dietary protein intake on longevity and metabolic health.2019

    • Author(s)
      Kitada M, Ogura Y, Monno I, Koya D.
    • Journal Title

      EBioMedicine.

      Volume: - Pages: -

    • DOI

      10.1016/j.ebiom.2019.04.005.

    • Peer Reviewed / Open Access
  • [Journal Article] βklotho is essential for the anti-endothelial mesenchymal transition effects of N-acetyl-seryl-aspartyl-lysyl-proline.2019

    • Author(s)
      Gao R, Kanasaki K, Li J, Kitada M, Okazaki T, Koya D.
    • Journal Title

      FEBS Open Bio

      Volume: 9 Pages: 1029-1038

    • DOI

      10.1002/2211-5463.12638

    • Peer Reviewed / Open Access
  • [Journal Article] Sirtuins and Type 2 Diabetes: Role in Inflammation, Oxidative Stress, and Mitochondrial Function.2019

    • Author(s)
      Kitada M, Ogura Y, Monno I, Koya D.
    • Journal Title

      Front Endocrinol (Lausanne).

      Volume: - Pages: -

    • DOI

      10.3389/fendo.2019.00187

    • Peer Reviewed / Open Access
  • [Journal Article] N-Acetyl-seryl-aspartyl-lysyl-proline is a potential biomarker of renal function in normoalbuminuric diabetic patients with eGFR above 30 ml/min/1.73 m2.2019

    • Author(s)
      Nitta K, Nagai T, Mizunuma Y, Kitada M, Nakagawa A, Sakurai M, Toyoda M, Haneda M, Kanasaki K, Koya D.
    • Journal Title

      Clin Exp Nephrol.

      Volume: - Pages: -

    • DOI

      10.1007/s10157-019-01733-6

    • Peer Reviewed
  • [Journal Article] Inhibition of Dipeptidyl Peptidase-4 Accelerates Epithelial-Mesenchymal Transition and Breast Cancer Metastasis via the CXCL12/CXCR4/mTOR Axis.2019

    • Author(s)
      Yang F, Takagaki Y, Yoshitomi Y, Ikeda T, Li J, Kitada M, Kumagai A, Kawakita E, Shi S, Kanasaki K, Koya D.
    • Journal Title

      Cancer Res

      Volume: 79 Pages: 735-746

    • DOI

      10.1158/0008-5472.CAN-18-0620.

    • Peer Reviewed
  • [Journal Article] Secular changes in clinical manifestations of kidney disease among Japanese adults with type 2 diabetes from 1996 to 2014.2019

    • Author(s)
      Kume S, Araki SI, Ugi S, Morino K, Koya D, Nishio Y, Haneda M, Kashiwagi A, Maegawa H.
    • Journal Title

      J Diabetes Investig.

      Volume: - Pages: -

    • DOI

      10.1111/jdi.12977.

    • Peer Reviewed
  • [Journal Article] AMP-Activated Protein (AMPK) in Pathophysiology of Pregnancy Complications.2019

    • Author(s)
      Kumagai A, Itakura A, Koya D, Kanasaki K.
    • Journal Title

      Int J Mol Sci.

      Volume: - Pages: -

    • DOI

      10.3390/ijms19103076.

    • Peer Reviewed
  • [Journal Article] SIRT3 deficiency leads to induction of abnormal glycolysis in diabetic kidney with fibrosis.2019

    • Author(s)
      Srivastava SP, Li J, Kitada M, Fujita H, Yamada Y, Goodwin JE, Kanasaki K, Koya D.
    • Journal Title

      Cell Death Dis.

      Volume: - Pages: -

    • DOI

      10.1038/s41419-018-1057-0.

    • Peer Reviewed
  • [Journal Article] Effect of switching to teneligliptin from other dipeptidyl peptidase-4 inhibitors on glucose control and renoprotection in type 2 diabetes patients with diabetic kidney disease.2019

    • Author(s)
      Kitada M, Ogura Y, Nitta K, Fujii M, Kanasaki K, Konishi K, Iida Y, Nakagawa A, Koya D.
    • Journal Title

      J Diabetes Investig.

      Volume: - Pages: -

    • DOI

      10.1111/jdi.12917.

    • Peer Reviewed
  • [Journal Article] Role of dietary amino acid balance in diet restriction-mediated lifespan extension, renoprotection, and muscle weakness in aged mice.2018

    • Author(s)
      Yoshida S, Yamahara K, Kume S, Koya D, Yasuda-Yamahara M, Takeda N, Osawa N, Chin-Kanasaki M, Adachi Y, Nagao K, Maegawa H, Araki SI.
    • Journal Title

      Aging Cell.

      Volume: - Pages: -

    • DOI

      10.1111/acel.12796.

    • Peer Reviewed
  • [Journal Article] Renal mitochondrial oxidative stress is enhanced by the reduction of Sirt3 activity, in Zucker diabetic fatty rats.2018

    • Author(s)
      Ogura Y, Kitada M, Monno I, Kanasaki K, Watanabe A, Koya D.
    • Journal Title

      Redox Rep.

      Volume: - Pages: -

    • DOI

      10.1080/13510002.2018.1487174.

    • Peer Reviewed
  • [Journal Article] A Low-Protein Diet for Diabetic Kidney Disease: Its Effect and Molecular Mechanism, an Approach from Animal Studies.2018

    • Author(s)
      Kitada M, Ogura Y, Monno I, Koya D.
    • Journal Title

      Nutrients.

      Volume: - Pages: -

    • DOI

      10.3390/nu10050544

    • Peer Reviewed
  • [Journal Article] A ketogenic amino acid rich diet benefits mitochondrial homeostasis by altering the AKT/4EBP1 and autophagy signaling pathways in the gastrocnemius and soleus.2018

    • Author(s)
      Li J, Kanasaki M, Xu L, Kitada M, Nagao K, Adachi Y, Jinzu H, Noguchi Y, Kohno M, Kanasaki K, Koya D.
    • Journal Title

      A ketogenic amino acid rich diet benefits mitochondrial homeostasis by altering the AKT/4EBP1 and autophagy signaling pathways in the gastrocnemius and soleus.

      Volume: 1862 Pages: 1547-1555

    • DOI

      10.1016/j.bbagen.2018.03.013

    • Peer Reviewed
  • [Journal Article] A low-protein diet exerts a beneficial effect on diabetic status and prevents diabetic nephropathy in Wistar fatty rats, an animal model of type 2 diabetes and obesity.2018

    • Author(s)
      Kitada M, Ogura Y, Suzuki T, Monno I, Kanasaki K, Watanabe A, Koya D.
    • Journal Title

      Nutr Metab (Lond).

      Volume: - Pages: -

    • DOI

      10.1186/s12986-018-0255-1

    • Peer Reviewed
  • [Journal Article] Ipragliflozin improves mitochondrial abnormalities in renal tubules induced by a high-fat diet.2018

    • Author(s)
      Takagi S, Li J, Takagaki Y, Kitada M, Nitta K, Takasu T, Kanasaki K, Koya D.
    • Journal Title

      J Diabetes Investig

      Volume: 9 Pages: 1025-1032

    • DOI

      10.1111/jdi.12802.

    • Peer Reviewed
  • [Journal Article] FGFR1 is essential for N-acetyl-seryl-aspartyl-lysyl-proline regulation of mitochondrial dynamics by upregulating microRNA let-7b-5p.2018

    • Author(s)
      Hu Q, Li J, Nitta K, Kitada M, Nagai T, Kanasaki K, Koya D.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 495 Pages: 2214-2220

    • DOI

      10.1016/j.bbrc.2017.12.089.

    • Peer Reviewed
  • [Remarks] 金沢医科大学 糖尿病・内分泌内科学

    • URL

      http://www.kanazawa-med.ac.jp/~endocrin/

URL: 

Published: 2019-12-27  

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