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Elucidation of the mechanism in which mechanostress modulates cardiac microtubules dynamics

Research Project

Project/Area Number 18K08105
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionNational Cardiovascular Center Research Institute (2019-2020)
Osaka University (2018)

Principal Investigator

SHINTANI YASUNORI  国立研究開発法人国立循環器病研究センター, 研究所, 部長 (20712243)

Co-Investigator(Kenkyū-buntansha) 塚本 蔵  大阪大学, 生命機能研究科, 准教授 (80589151)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsAMPK / 介在板 / メカノストレス / 心臓介在板 / 微小管
Outline of Final Research Achievements

In this study, we identified an active form of AMP-activated protein kinase (AMPK) localized at the intercalated disks in the heart, a specific cell–cell junction present between cardiomyocytes. A contractile inhibitor, MYK-461, prevented the localization of AMPK at the intercalated disks, suggesting that the localization of AMPK is regulated by mechanical stress. MYK-461 increased the individual cell area of cardiomyocytes in CLIP-170 phosphorylation-dependent manner. Moreover, heart-specific CLIP-170 S311A transgenic mice demonstrated elongation of cardiomyocytes along with accumulated microtubules (MTs), leading to progressive decline in cardiac contraction. In conclusion, AMPK regulates the cell shape and aspect ratio of cardiomyocytes by modulating the turnover of MTs through homeostatic phosphorylation of CLIP-170 at the intercalated disks.

Academic Significance and Societal Importance of the Research Achievements

介在板を発信源とするAMPKメカノシグナルによる心筋微小管の動的制御機構を明らかにし、その基質としてCLIPリン酸化が心疾患の病態形成に関わる可能性を示した。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results)

  • [Journal Article] The CR9 element is a novel mechanical load‐responsive enhancer that regulates natriuretic peptide genes expression2021

    • Author(s)
      Miyashita Y, Tsukamoto O, Matsuoka K, Kamikubo K, Kuramoto Y, Fu HY, Tsubota T, Hasuike H, Takayama T, Ito H, Hitsumoto T, Okamoto C, Kioka H, Oya R, Shinomiya H, Hakui H, Shintani Y, Kato H, Kitakaze M, Sakata Y, Asano Y, Takashima S
    • Journal Title

      The FASEB Journal

      Volume: 35 Issue: 4

    • DOI

      10.1096/fj.202002111rr

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] AMPK regulates cell shape of cardiomyocytes by modulating turnover of microtubules through CLIP‐1702020

    • Author(s)
      Yashirogi Shohei、Nagao Takemasa、Nishida Yuya、Takahashi Yusuke、Qaqorh Tasneem、Yazawa Issei、Katayama Toru、Kioka Hidetaka、Matsui Tsubasa S、Saito Shigeyoshi、Masumura Yuki、Tsukamoto Osamu、Kato Hisakazu、Ueda Hiromichi、Yamaguchi Osamu、Yashiro Kenta、Yamazaki Satoru、Takashima Seiji、Shintani Yasunori
    • Journal Title

      EMBO reports

      Volume: 22 Issue: 1

    • DOI

      10.15252/embr.202050949

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vivo real‐time ATP imaging in zebrafish hearts reveals G0s2 induces ischemic tolerance2020

    • Author(s)
      Kioka Hidetaka、Kato Hisakazu、Fujita Takeshi、Asano Yoshihiro、Shintani Yasunori、Yamazaki Satoru、Tsukamoto Osamu、Imamura Hiromi、Kogo Mikihiko、Kitakaze Masafumi、Sakata Yasushi、Takashima Seiji
    • Journal Title

      The FASEB Journal

      Volume: 34 Issue: 2 Pages: 2041-2054

    • DOI

      10.1096/fj.201901686r

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Higd1a improves respiratory function in the models of mitochondrial disorder2019

    • Author(s)
      Nagao Takemasa、Shintani Yasunori、Hayashi Takaharu、Kioka Hidetaka、Kato Hisakazu、Nishida Yuya、Yamazaki Satoru、Tsukamoto Osamu、Yashirogi Shohei、Yazawa Issei、Asano Yoshihiro、Shinzawa‐Itoh Kyoko、Imamura Hiromi、Suzuki Takeo、Suzuki Tsutomu、Goto Yu‐ichi、Takashima Seiji
    • Journal Title

      The FASEB Journal

      Volume: 34 Issue: 1 Pages: 1859-1871

    • DOI

      10.1096/fj.201800389r

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Endocardium differentiation through Sox17 expression in endocardium precursor cells regulates heart development in mice2019

    • Author(s)
      Saba Rie、Kitajima Keiko、Rainbow Lucille、Engert Silvia、Uemura Mami、Ishida Hidekazu、Kokkinopoulos Ioannis、Shintani Yasunori、Miyagawa Shigeru、Kanai Yoshiakira、Kanai-Azuma Masami、Koopman Peter、Meno Chikara、Kenny John、Lickert Heiko、Saga Yumiko、Suzuki Ken、Sawa Yoshiki、Yashiro Kenta
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 11953-11953

    • DOI

      10.1038/s41598-019-48321-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A molecular triage process mediated by RING finger protein 126 and BCL2-associated athanogene 6 regulates degradation of G0/G1 switch gene 22019

    • Author(s)
      Kamikubo Kenta、Kato Hisakazu、Kioka Hidetaka、Yamazaki Satoru、Tsukamoto Osamu、Nishida Yuya、Asano Yoshihiro、Imamura Hiromi、Kawahara Hiroyuki、Shintani Yasunori、Takashima Seiji
    • Journal Title

      Journal of Biological Chemistry

      Volume: 294 Issue: 40 Pages: 14562-14573

    • DOI

      10.1074/jbc.ra119.008544

    • Related Report
      2019 Research-status Report
    • Peer Reviewed

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Published: 2018-04-23   Modified: 2022-01-27  

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