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Investigating the molecular mechanism of cardiomyocyte dedifferentiation induced by a novel transcription factor

Research Project

Project/Area Number 21K08144
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

Principal Investigator

Ogawa Masahito  国立研究開発法人国立循環器病研究センター, 研究所, 上級研究員 (00898009)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords再生 / 心筋細胞 / 増殖 / 脱分化 / ゼブラフィッシュ / 心筋再生 / 心筋細胞脱分化 / 心筋細胞増殖
Outline of Research at the Start

ゼブラフィッシュの心臓は心筋細胞の脱分化・増殖を介して再生する。心筋脱分化は一時的に未分化様となる形態の変化であり、増殖能を活性させると考えられている。しかし、脱分化誘導のプロセスや、脱分化への介入による増殖能への影響は明らかにされてない。本研究では新たに同定された心筋脱分化を特異的に誘導可能な転写因子に着目し、この誘導機序を網羅的なエピゲノムおよび遺伝子発現解析により明らかにする。この分子の発現抑制・亢進は心筋細胞増殖機能の不全・更なる向上を示すかを解析する。この新規転写因子の機能解析から脱分化誘導プログラムを理解し、心筋再生における心筋脱分化の機能の一端を明らかにすることを目標としている。

Outline of Final Research Achievements

Here, we identified a transcription factor (TF) that possesses a novel role in cardiomyocyte (CM) dedifferentiation and could know how the TF can cause the phenomenon. CM dedifferentiation and proliferation, the key events to achieve cardiac regeneration in zebrafish were controlled by distinct genetic pathways. The genetically modified zebrafish models can specifically promote or impede CM dedifferentiation through the loss of and gain of function of the TF demonstrating the important role of dedifferentiation during cardiac regeneration. Epigenomic approaches highlighted the induction mechanism of CM dedifferentiation caused by the TF.

Academic Significance and Societal Importance of the Research Achievements

これまで心臓再生時において心筋脱分化が観察されており再生機構に重要であると考えられてきたが、その機能はまだ詳しく理解されていない。本研究は心筋脱分化の重要性を明らかにする事に成功した。これにより心筋自己再生を応用した再生療法を開発するために重要な制御機構の解明になると言え、新たな心不全治療の確立に役立つと考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] HOPX-associated molecular programs control cardiomyocyte cell states underpinning cardiac structure and function2024

    • Author(s)
      Friedman CE. Cheetham SW. Negi S. Mills RJ. Ogawa M. Redd MA. Chiu HS. Shen S. Sun Y. Mizikovsky D. Bouveret R. Chen X. Voges HK. Paterson S. De Angelis JE. Andersen SB. Cao Y. Wu Y. Jafrani YMA. Yoon S. Faulkner GJ. Smith KA. Porrello E. Harvey RP. Hogan BM. Nguyen Q. Zeng J. Kikuchi K. Hudson JE. Palpant NJ.
    • Journal Title

      Developmental Cell

      Volume: 59 Issue: 1 Pages: 91-107.e6

    • DOI

      10.1016/j.devcel.2023.11.012

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generation of Conditional Knockout Zebrafish Using an Invertible Gene-Trap Cassette2023

    • Author(s)
      Ogawa Masahito. Kikuchi Kazu
    • Journal Title

      Methods Molecular Biology

      Volume: 2707 Pages: 205-214

    • DOI

      10.1007/978-1-0716-3401-1_13

    • ISBN
      9781071634004, 9781071634011
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Zebrafish <i>Heme Oxygenase 1a</i> Is Necessary for Normal Development and Macrophage Migration2022

    • Author(s)
      Luo Kaiming、Ogawa Masahito、Ayer Anita、Britton Warwick J.、Stocker Roland、Kikuchi Kazu、Oehlers Stefan H.
    • Journal Title

      Zebrafish

      Volume: 19 Issue: 1 Pages: 7-17

    • DOI

      10.1089/zeb.2021.0058

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] HOPX governs a molecular and physiological switch between cardiomyocyte progenitor and maturation gene programs2022

    • Author(s)
      Friedman CE. Cheetham SW. Mills RJ. Ogawa M. Redd MA. Chiu HS, Shen S. Sun Y. Mizikovsky D. Bouveret R. Chen X. Voges H. Paterson S. De Angelis JE. Andersen SB. Yoon S. Faulkner GJ. Smith KA. Harvey RP. Hogan BM. Nguyen Q. Kikuchi K. Hudson JE. Palpant NJ.
    • Journal Title

      BioRxiv

      Volume: -

    • DOI

      10.1101/2022.04.17.488603

    • Related Report
      2022 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] Elucidating mechanism of cardiomyocyte renewal induced by transcription factor Klf12022

    • Author(s)
      Masahito Ogawa, Kazu Kikuchi
    • Organizer
      第28回小型魚類学会
    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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