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Role of STAT6 in the regulatory mechanisms of myoblast fusion that form skeletal muscle

Research Project

Project/Area Number 18K10904
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59020:Sports sciences-related
Research InstitutionSt. Marianna University School of Medicine

Principal Investigator

Kurosaka Mitsutoshi  聖マリアンナ医科大学, 医学部, 助教 (40553970)

Co-Investigator(Kenkyū-buntansha) 小倉 裕司  聖マリアンナ医科大学, 医学部, 講師 (90509952)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords骨格筋 / 筋芽細胞 / 筋芽細胞融合 / STAT6 / IL-4 / 筋サテライト細胞 / 筋再生 / 細胞融合 / 筋管細胞
Outline of Final Research Achievements

While myoblast fusion is necessary for muscle genesis, development and regeneration, the clarification of the mechanisms of myoblast fusion is required. This study was conducted elucidate the role of STAT6 in myoblast fusion in in vitro and in vivo. STAT6 overexpression decreased, but STAT6 knockdown increased the differentiation index and the fusion index. Furthermore, STAT6 inhibited myogenin protein expression. Results of in vivo experiments show that STAT6 knockout mice exhibited better regeneration than wild-type mice 5 days after cardiotoxin-induced injury. Results suggest that STAT6 functions as an inhibitor of myoblast fusion.

Academic Significance and Societal Importance of the Research Achievements

本研究ではSTAT6が筋芽細胞の融合を抑制していることを明らかにした。筋芽細胞の融合は、筋の発生、成長や再生に必須であることが知られている。したがって、筋芽細胞の融合の機序を解明することは、筋の発生の理解あるいは効果的な筋肥大や筋再生方法の確立のために重要である。高齢社会を迎えた我が国において、加齢に伴う筋萎縮を抑制し、筋肉量を増加させることは健康寿命延伸のために重要である。また、スポーツ選手における筋損傷後の競技への早期復帰のためには筋再生を促進させることが重要である。本研究の成果はそれら問題を解決するために役立てられる。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Transcription factor signal transducer and activator of transcription 6 (STAT6) is an inhibitory factor for adult myogenesis2021

    • Author(s)
      Mitsutoshi Kurosaka, Yuji Ogura, Shuichi Sato, Kazuhisa Kohda, Toshiya Funabashi.
    • Journal Title

      Skeletal Muscle

      Volume: 11 Issue: 1 Pages: 14-14

    • DOI

      10.1186/s13395-021-00271-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ketogenic diet feeding improves aerobic metabolism property in extensor digitorum longus muscle of sedentary male rats2020

    • Author(s)
      Ogura Yuji、Kakehashi Chiaki、Yoshihara Toshinori、Kurosaka Mitsutoshi、Kakigi Ryo、Higashida Kazuhiko、Fujiwara Sei-Etsu、Akema Tatsuo、Funabashi Toshiya
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 10 Pages: 1-16

    • DOI

      10.1371/journal.pone.0241382

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Age-related decrease in muscle satellite cells is accompanied with diminished expression of early growth response 3 in mice2020

    • Author(s)
      Ogura Y., Sato S., Kurosaka M., Kotani T., Fujiya H., Funabashi T.
    • Journal Title

      Mol. Biol. Rep.

      Volume: 47 Issue: 2 Pages: 977-986

    • DOI

      10.1007/s11033-019-05189-5

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long-Term Effects of ACL Transection on the Gastrocnemius Muscle in Rats2019

    • Author(s)
      Kotani T, Goto K, Ohno M, Ogura Y, Kurosaka M, Yatabe K, Kumai T, Niki H
    • Journal Title

      Sports Injuries & Medicine

      Volume: 5 Pages: 1-7

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 黒坂光寿, 小倉裕司, 幸田和久, 舩橋利也2020

    • Author(s)
      STAT6は筋芽細胞の分化・融合を負に制御する
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] ACL断裂症例のオーダーメイドリハプログラムの実現に向けて(第5報)-健側脚伸展筋力と筋線維タイプの関係-2019

    • Author(s)
      小林哲士, 植原健二, 木城智, 皆川直毅, 鈴木智裕, 小倉祐司, 黒坂光寿, 後藤勝正, 仁木久照
    • Organizer
      第92回日本整形外科学会学術総会
    • Related Report
      2019 Research-status Report
  • [Presentation] ACL切断がラット腓腹筋に及ぼす長期的影響-切断側と対側の比較-2019

    • Author(s)
      小谷貴史, 大野真弘, 小倉裕司, 黒坂光寿, 後藤勝正, 谷田部かなか, 熊井隆智, 藤谷博人, 仁木久照
    • Organizer
      第34回日本整形外科学会基礎学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ACL断裂症例のオーダーメイドリハプログラムの実現に向けて(第6報)-筋線維タイプからみた至適な手術日 -2019

    • Author(s)
      小林哲士, 植原健二, 木城智, 皆川直毅, 鈴木智裕, 小倉裕司, 黒坂光寿, 後藤勝正, 仁木久照
    • Organizer
      第34回日本整形外科学会基礎学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] STAT6 promotes myoblast fusion via regulating myoblast differentiation2019

    • Author(s)
      Mitsutoshi Kurosaka, Yuji Ogura, Kazuhisa Kohda, Toshiya Funabashi
    • Organizer
      FAOPS2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ketogenic diet induces slow-type shift of skeletal muscle in male rat2019

    • Author(s)
      Yuji Ogura, Mitsutoshi Kurosaka, Chiaki Kakehashi, Ryo Kakigi, Tatsuo Akema, Toshiya Funabashi
    • Organizer
      FAOPS2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Involvement of early growth response 3 in myoblast proliferation2018

    • Author(s)
      Yuji Ogura, Mitsutoshi kurosaka, Tatsuo Akema, Toshiya Funabashi
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Possible involvement of early growth response 3 in age-related reduction of muscle satellite cells2018

    • Author(s)
      Yuji Ogura, Mitsutoshi Kurosaka, Shuichi Ssato, Takashi Kotani, Hiroto Fujiya, Toshiya Funabashi
    • Organizer
      2018 New Directions in Biology and Disease of Skeletal Muscle Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-01-30  

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