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Novel role of SIRT1 in regulation of autophagy and its role in heart failure

Research Project

Project/Area Number 17K08600
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General pharmacology
Research InstitutionSapporo Medical University

Principal Investigator

Kuno Atsushi  札幌医科大学, 医学部, 准教授 (30468079)

Co-Investigator(Kenkyū-buntansha) 堀尾 嘉幸  札幌医科大学, 医学部, 教授 (30181530)
矢野 俊之  札幌医科大学, 医学部, 講師 (40444913)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsオートファジー / SIRT1 / 心不全 / マイトファジー / オートファゴソーム / リソソーム / mTOR
Outline of Final Research Achievements

We investigated how SIRT1 regulates autophagy/mitophagy and its role in heart diseases. We found that administration of the SIRT1 activator to mdx mice, a model of muscular dystrophy, restored mitophagy in the heart and led to the improvement in cardiac function. In cardiomyocytes, knockdown of SIRT1 blocked CCCP-induced mitophagy and interrupted fusion of autophagosomes and lysosomes. These results suggest that SIRT1 is involved in autophagosome-lysosome fusion to promotes autophagy/mitophagy and protects the heart via autophagy/mitophagy activation.

Academic Significance and Societal Importance of the Research Achievements

本研究では、SIRT1がオートファジーの進行に重要であるオートファゴソームとリソソームの融合に重要な役割を果たすことを見出した。心不全心筋ではオートファジー不全が心機能障害性に作用するが、オートファジーの新たな調節機構の解明は新たな心疾患治療の開発につながる。
心疾患以外にもオートファジー不全が関与する病態は数多く存在することも最近わかってきていることから、本研究の成果は様々な疾患における新しい病態の発見やSIRT1-オートファジー/マイトファジーを介した新しい治療法の開発に結び付く可能性がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2020 2019 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Resveratrol Decreases Oxidative Stress by Restoring Mitophagy and Improves the Pathophysiology of Dystrophin-Deficient mdx Mice.2018

    • Author(s)
      Sebori R, Kuno A, Hosoda R, Hayashi T, Horio Y.
    • Journal Title

      Oxid Med Cell Longev.

      Volume: 2018 Issue: 1 Pages: 9179270-9179270

    • DOI

      10.1155/2018/9179270

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Resveratrol Ameliorates Mitophagy Disturbance and Improves Cardiac Pathophysiology of Dystrophin-deficient mdx Mice.2018

    • Author(s)
      Kuno A, Hosoda R, Sebori R, Hayashi T, Sakuragi H, Tanabe M, Horio Y.
    • Journal Title

      Sci Rep.

      Volume: 8 Issue: 1 Pages: 15555-15555

    • DOI

      10.1038/s41598-018-33930-w

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] SIRT1, a protein deacetylase, contributes to mitophagy by promotion of autophagosome-lysosome fusion in the cardiomyocyte.2020

    • Author(s)
      Atsushi Kuno
    • Organizer
      第93回 日本薬理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マイトファジーにおける 蛋白脱アセチル化酵素SIRT1の役割2019

    • Author(s)
      久野 篤史
    • Organizer
      第70回 日本薬理学会北部会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 蛋白脱アセチル化酵素SIRT1はオーファゴソームの分解を介してマイトファジーを制御する2019

    • Author(s)
      久野 篤史
    • Organizer
      第42回 日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] SIRT1の活性化はマイトファジーにより障害ミトコンドリアを除去して筋ジストロフィー心筋障害を軽減する2018

    • Author(s)
      久野篤史
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Sirt1 Activation Restores Mitophagy-Mediated Clearance of Damaged Mitochondria and Ameliorates Dystrophic Cardiomyopathy in Mice2018

    • Author(s)
      Atsushi Kuno
    • Organizer
      American Heart Association Scientific Sessions 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] レスベラトロールによる筋ジストロフィー治療2018

    • Author(s)
      久野篤史
    • Organizer
      第69回 日本薬理学会北部
    • Related Report
      2018 Research-status Report
  • [Presentation] The SIRT1 activator resveratrol ameliorates dystrophic cardiomyopathy by promoting mitophagy. 久野 篤史2018

    • Author(s)
      Atsushi Kuno
    • Organizer
      European Society of Cardiology Congress 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Role of impaired autophagosome clearance in cardomyopathy of dystrophin-deficient mice.2018

    • Author(s)
      久野篤史、細田隆介、堀尾嘉幸
    • Organizer
      第82回日本循環器学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 筋ジストロフィー心筋におけるオートファジー不全の意義2017

    • Author(s)
      久野篤史、細田隆介、瀬堀理生、堀尾嘉幸
    • Organizer
      第68回日本薬理学会北部会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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