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Involvement of YAP inactivation and microRNA in ethanol-induced cardiotoxicity

Research Project

Project/Area Number 17K15879
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Legal medicine
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Noritake Kanako  東京医科歯科大学, 大学院医歯学総合研究科, 特任助教 (40758067)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsアルコール / 心筋細胞障害 / YAP / microRNA / エタノール / 心筋細胞 / 心筋障害 / Hippo-YAP経路
Outline of Final Research Achievements

Excessive alcohol consumption often causes compromised myocardial contractile function, although the precise mechanism remains unknown.We have previously demonstrated that disruption of the actin cytoskeleton and inactivation of an anti-apoptotic transcriptional co-activator Yes-associated protein (YAP) are involved in ethanol cytotoxicity on cardiomyocytes.
We found that expression of miR-133a, which is the most abundant and cardiac-specific microRNA(miRNA), was decreased in HL-1 murine atrial cardiomyocytes after exposure to ethanol. In addition, mRNA levels of Hcn2 and cyclin D2, which are miR-133 targets and involved in cardiac arrhythmia (electrical remodeling), were increased in ethanol-exposed cells. In summary, our data show that miRNAs should be crucially involved in the cytotoxicity of ethanol on HL-1 cardiomyocytes.

Academic Significance and Societal Importance of the Research Achievements

エタノールに限らず、様々な薬物刺激による細胞障害機序は複数のシグナル経路が複雑なネットワークを形成している場合が多い。本研究では、個体よりもより単純化した培養細胞系を用いることで詳細な分子機構の解析が可能となり、アルコールによる心筋細胞障害に関わる新規のシグナル経路としてHippo-YAPシグナルや、microRNAが関与することを見出した。
アルコールによる心筋障害の詳細な分子機序を解明することで、臨床医学上での治療法や法医実務上での診断法の確立に貢献できると考える。また、アルコールのリスクを科学的に証明することで、アルコール乱用の抑制に寄与することが期待される。

Report

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

    (5 results)

All 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Book (2 results)

  • [Journal Article] Restoration of YAP activation rescues HL-1 cardiomyocytes from apoptotic death by ethanol2017

    • Author(s)
      Kanako Noritake, Toshihiko Aki, Moe Kimura, Takeshi Funakoshi, Kana Unuma, Koichi Uemura.
    • Journal Title

      The Journal of Toxicological Sciences

      Volume: 42 Issue: 5 Pages: 545-551

    • DOI

      10.2131/jts.42.545

    • NAID

      130006076729

    • ISSN
      0388-1350, 1880-3989
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Involvement of microRNA in ethanol-induced cardiotoxicity.2018

    • Author(s)
      Kanako Noritake, Toshihiko Aki, Koichi Uemura.
    • Organizer
      ISBRA 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エタノールによる心筋細胞死は YAP 活性化により抑制される.2017

    • Author(s)
      則竹香菜子, 秋 利彦, 上村公一.
    • Organizer
      第52回 日本アルコール・アディクション医学会学術総会
    • Related Report
      2017 Research-status Report
  • [Book] Autophagy in health and disease2018

    • Author(s)
      Toshihiko Aki, Kanako Noritake, Kana Unuma, and Koichi Uemura.
    • Total Pages
      192
    • Publisher
      Humana Press
    • ISBN
      9783319981451
    • Related Report
      2018 Annual Research Report
  • [Book] Comprehensive Toxicology, 3rd Edition2017

    • Author(s)
      Toshihiko Aki, Kanako Noritake, Takeshi Funakoshi, Koichi Uemura.
    • Total Pages
      8624
    • Publisher
      Elsevier
    • ISBN
      9780081006016
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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