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Endoplasmic reticulum selective autophagy alleviates chronic heart failure

Research Project

Project/Area Number 20K08399
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

MAEJIMA YASUHIRO  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (40401393)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsがん治療関連心筋障害 / アントラサイクリン系抗がん剤 / 慢性心不全 / 小胞体ストレス / 小胞体選択的オートファジー / オートファジー / ドキソルビシン / 心不全 / ERファジー / ERストレス / CCPG1 / 薬剤性心筋症
Outline of Research at the Start

小胞体(ER)ストレスは心不全の発症や病状進展に重要な役割を果たしており、その制御機構が創薬の標的として注目されている。申請者はオートファジーの制御異常による心筋細胞におけるタンパクの品質管理低下や、障害を受けたミトコンドリアを選択的に分解するオートファジーの機能異常が心筋細胞の生存を脅かし、心不全を発症するに至ることとその分子機序を解明してきた。本研究ではこれらの成果を発展させ、心筋細胞においてストレスに曝されてダメージを受けたERが選択的オートファジーによって除去される分子機序を解明する。さらに、このメカニズムを標的とした新しい心不全治療法の開発に向けた基礎研究を行う。

Outline of Final Research Achievements

Administration of Doxorubicin (Dox) induces progressive and dose-related cardiac damage through several cytotoxic mechanisms, including endoplasmic reticulum (ER) stress. We aimed to clarify whether ER-selective autophagy machinery (ER-phagy) serves as an alternative system to protect cardiomyocytes from ER stress caused by anthracycline drugs. Dox-induced cardiomyopathy models of ER-phagy reporter mice showed marked activation of ER-phagy in the myocardium compared to those of saline-treated mice. Dox enhanced the expression of CCPG1 in H9c2 cells and ablation of CCPG1 in H9c2 cells resulted in the reduced ER-phagy activity, accumulation of pro-apoptotic proteins and deterioration of cell survival against Dox administration. CCPG1-hypomorphic mice developed more severe deterioration in systolic function in response to Dox compared to wild-type mice.
Our findings highlight a compensatory role of CCPG1-driven ER-phagy in reducing Dox toxicity.

Academic Significance and Societal Importance of the Research Achievements

本研究で見いだすことのできたERファジーの制御異常による心不全の発症および病状進展を引き起こす分子機序の解明は、難治性疾患である慢性心不全の治療のみにとどまらず、動脈硬化症、神経変性疾患、悪性腫瘍などERストレスが重要な役割を果たしていると考えられている疾患全般の治療に応用可能な治療法の開発の端緒になり得る重要な知見であると考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (2 results)

  • [Journal Article] Neutrophil extracellular traps-mediated Beclin-1 suppression aggravates atherosclerosis by inhibiting macrophage autophagy2022

    • Author(s)
      Sano Masataka、Maejima Yasuhiro、Nakagama Shun、Shiheido-Watanabe Yuka、Tamura Natsuko、Hirao Kenzo、Isobe Mitsuaki、Sasano Tetsuo
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 10 Pages: 876147-876147

    • DOI

      10.3389/fcell.2022.876147

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Pathophysiological Significance of “Mitochondrial Ejection” from Cells2022

    • Author(s)
      Fan Qintao、Maejima Yasuhiro、Wei Lai、Nakagama Shun、Shiheido-Watanabe Yuka、Sasano Tetsuo
    • Journal Title

      Biomolecules

      Volume: 12 Issue: 12 Pages: 1770-1770

    • DOI

      10.3390/biom12121770

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The role of the Hippo pathway in autophagy in the heart.2022

    • Author(s)
      Maejima Y, Zablocki D, Nah J, Sadoshima J.
    • Journal Title

      Cardiovasc Res.

      Volume: N/A Issue: 17 Pages: 3320-3330

    • DOI

      10.1093/cvr/cvac014

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rivaroxaban, a Direct Oral Factor Xa Inhibitor, Attenuates Atherosclerosis by Alleviating Factor Xa-PAR2-Mediated Autophagy Suppression.2021

    • Author(s)
      Ito Y, Maejima Y, Nakagama S, Shiheido-Watanabe Y, Tamura N, Sasano T.
    • Journal Title

      JACC Basic Transl Sci.

      Volume: 6 Issue: 12 Pages: 964-980

    • DOI

      10.1016/j.jacbts.2021.09.010

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ser9 phosphorylation of GSK-3β promotes aging in the heart through suppression of autophagy.2021

    • Author(s)
      Chen Y, Maejima Y, Shirakabe A, Yamamoto T, Ikeda Y , Sadoshima J, Zhai P.
    • Journal Title

      J Cardiovasc Aging

      Volume: 1:9. Pages: 9-9

    • DOI

      10.20517/jca.2021.13

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Plasma apolipopotein C-2 elevation is associated with Takayasu arteritis.2021

    • Author(s)
      Tamura N, Maejima Y, Shiheido-Watanabe Y, Nakagama S, Isobe M, Sasano T.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 18958-18958

    • DOI

      10.1038/s41598-021-98615-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Linagliptin, A Xanthine-Based Dipeptidyl Peptidase-4 Inhibitor, Ameliorates Experimental Autoimmune Myocarditis.2021

    • Author(s)
      Shiheido-Watanabe Y, Maejima Y, Kasama T, Tamura N, Nakagama S, Ito Y, Hirao K, Isobe M, Sasano T.
    • Journal Title

      JACC Basic Transl Sci.

      Volume: 6 Issue: 6 Pages: 527-542

    • DOI

      10.1016/j.jacbts.2021.04.006

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 小胞体選択的オートファジーの分子機構および疾患の関わり2020

    • Author(s)
      前嶋康浩
    • Journal Title

      BIO Clinica

      Volume: 35 Pages: 1149-1153

    • Related Report
      2020 Research-status Report
  • [Presentation] Endoplasmic reticulum (ER)-selective autophagy alleviates ER stress-mediated myocardial injury2021

    • Author(s)
      Shun Nakagama, Yasuhiro Maejima, Tetsuo Sasano
    • Organizer
      The 5th JCS Council Forum on Basic CardioVascular Research
    • Related Report
      2021 Research-status Report
  • [Presentation] The critical role of endoplasmic reticulum (ER)-selective autophagy in response to ER stress-mediated myocardial injury2021

    • Author(s)
      中釜瞬、前嶋康浩、渡辺由佳、田村夏子、笹野哲郎
    • Organizer
      第85回日本循環器学会学術集会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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