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Elucidation of the mechanism by which the RNA-binding protein Musashi prevents skeletal muscle atrophy

Research Project

Project/Area Number 20H04079
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59020:Sports sciences-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Furuichi Yasuro  東京都立大学, 人間健康科学研究科, 助教 (40733035)

Co-Investigator(Kenkyū-buntansha) 眞鍋 康子  東京都立大学, 人間健康科学研究科, 准教授 (60467412)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords骨格筋 / RNA結合タンパク質 / 筋線維タイプ / 筋萎縮 / 糖代謝 / 幹細胞 / 筋再生 / 筋幹細胞 / RNA結合タンパク
Outline of Research at the Start

骨格筋の萎縮は、運動機能を低下させて生活の質の低下を招くため、その分子生物学的な原因の解明と治療方法の開発が求められている。申請者はこれまで、筋萎縮を引き起こす新規因子を探索してきた結果、Musashi2(Msi2)を発見した。Msi2は筋の再生と肥大を担うサテライト細胞という骨格筋の幹細胞に発現し、Msi2の欠損は筋損傷後に萎縮を引き起こすことが明らかとなってきた。そこで本研究では、Msi2はサテライト細胞の運命決定因子として、筋再生を促進する役割を担うことを証明する。Msi2が筋の恒常性を保つ新規遺伝子であることが実証されると、筋萎縮の予防と治療を実現させる新たな戦略がうまれる。

Outline of Final Research Achievements

This study aimed to elucidate the mechanism by which the cell fate determinant Musashi2 (Msi2), an RNA binding protein, maintains skeletal muscle mass and prevents muscle wasting. Analysis of skeletal muscles from Msi2-deficient mice revealed that the loss of Msi2 not only atrophied the muscles but also caused them to turn white, and impaired muscle strength and glucose metabolism. In addition, type IIa fibers, which have the characteristics of fast but slow muscle, were reduced in the Msi2-deficient mice. In addition, RNA sequencing and cell culture experiments showed that Msi2 regulates the expression of genes important for muscle metabolism. These results suggest that Msi2 is a novel regulator of skeletal muscle atrophy and metabolic capacity.

Academic Significance and Societal Importance of the Research Achievements

不活動や加齢による骨格筋の萎縮は、運動機能を低下させて、生活の質の低下を招く。高齢化社会が進む日本において、高齢者の骨格筋を健常に保つことは、労働力の確保や医療費の削減につながるため、最も重要な課題のひとつとされている。Musashi-2(Msi2)が筋量や筋代謝能力の維持に必要な新規因子であるという発見は、筋萎縮の治療薬や効果的な運動プログラムの策定に応用される。特に、Msi2は運動によって増加するType IIa線維の量を制御することが示唆されたため、運動適応に必要な因子であると推察される。Msi2が制御する細胞内情報伝達機構の解明は、筋萎縮の予防と治療を実現させる新たな戦略につながる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (26 results)

All 2023 2022 2021 2020 Other

All Journal Article (14 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 13 results,  Open Access: 12 results) Presentation (7 results) (of which Invited: 5 results) Remarks (5 results)

  • [Journal Article] Lack of Musashi‐2 induces type IIa fiber‐dominated muscle atrophy2023

    • Author(s)
      Furuichi Yasuro、Furutani Ayana、Tamura Kotaro、Manabe Yasuko、Fujii Nobuharu L.
    • Journal Title

      The FASEB Journal

      Volume: 37 Issue: 9

    • DOI

      10.1096/fj.202300563r

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of mechanically patterned hydrogels for controlling the self-condensation of cells2023

    • Author(s)
      Matsuzaki Takahisa, Kawano Yuma, Horikiri Momoka, Shimokawa Yuko, Yamazaki Takashi, Okuma Nao, Koike Hiroyuki, Kimura Masaki, Kawamura Ryuzo, Yoneyama Yosuke, Furuichi Yasuro, Hakuno Fumihiko, Takahashi Shin-Ichiro, Nakabayashi Seiichiro, Okamoto Satoshi, Nakauchi Hiromitsu, Taniguchi Hideki, Takebe Takanori, et al
    • Journal Title

      STAR Protocols

      Volume: 4 Issue: 3 Pages: 102471-102471

    • DOI

      10.1016/j.xpro.2023.102471

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stable isotope-labeled carnitine reveals its rapid transport into muscle cells and acetylation during contraction2023

    • Author(s)
      Furuichi Yasuro、Goto-Inoue Naoko、Uchida Saki、Masuda Shun、Manabe Yasuko、Fujii Nobuharu L.
    • Journal Title

      Heliyon

      Volume: 9 Issue: 4 Pages: e15281-e15281

    • DOI

      10.1016/j.heliyon.2023.e15281

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 骨格筋恒常性における Musashi の役割2023

    • Author(s)
      古市泰郎, 古谷綾菜
    • Journal Title

      Medical Science Digest

      Volume: 49 Pages: 43-45

    • Related Report
      2023 Annual Research Report
  • [Journal Article] PDGF-B secreted from skeletal muscle enhances myoblast proliferation and myotube maturation via activation of the PDGFR signaling cascade2023

    • Author(s)
      Hamaguchi Hiroki、Dohi Kitora、Sakai Takaomi、Taoka Masato、Isobe Toshiaki、Matsui Tsubasa S.、Deguchi Shinji、Furuichi Yasuro、Fujii Nobuharu L.、Manabe Yasuko
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 639 Pages: 169-175

    • DOI

      10.1016/j.bbrc.2022.11.085

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Muscle immobilization delays abrupt change in myoglobin saturation at onset of muscle contraction2022

    • Author(s)
      Takakura H, Yamada T, Furuichi Y, Hashimoto T, Iwase S, Jue T and Masuda K
    • Journal Title

      The Journal of Physical Fitness and Sports Medicine

      Volume: 11 Issue: 2 Pages: 87-96

    • DOI

      10.7600/jpfsm.11.87

    • ISSN
      2186-8123, 2186-8131
    • Year and Date
      2022-03-25
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of chronic muscle contraction on expression of contractile and metabolic proteins in mouse primary cultured myotubes2022

    • Author(s)
      Mita Yoshitaka、Ito Miyuki、Yamada Mio、Fujii Nobuharu L.、Manabe Yasuko、Furuichi Yasuro
    • Journal Title

      The Journal of Physical Fitness and Sports Medicine

      Volume: 11 Issue: 1 Pages: 51-56

    • DOI

      10.7600/jpfsm.11.51

    • NAID

      130008141537

    • ISSN
      2186-8123, 2186-8131
    • Year and Date
      2022-01-25
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical guidance of self-condensation patterns of differentiating progeny2022

    • Author(s)
      Matsuzaki Takahisa、Shimokawa Yuko、Koike Hiroyuki、Kimura Masaki、Kawano Yuma、Okuma Nao、Kawamura Ryuzo、Yoneyama Yosuke、Furuichi Yasuro、Hakuno Fumihiko、Takahashi Shin-Ichiro、Nakabayashi Seiichiro、Okamoto Satoshi、Nakauchi Hiromitsu、Taniguchi Hideki、Takebe Takanori、Yoshikawa Hiroshi Y.
    • Journal Title

      iScience

      Volume: 25 Issue: 10 Pages: 105109-105109

    • DOI

      10.1016/j.isci.2022.105109

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Establishment of a system evaluating the contractile force of electrically stimulated myotubes from wrinkles formed on elastic substrate2022

    • Author(s)
      Hamaguchi Hiroki、Matsui Tsubasa S.、Deguchi Shinji、Furuichi Yasuro、Fujii Nobuharu L.、Manabe Yasuko
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 13818-13818

    • DOI

      10.1038/s41598-022-17548-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] R-spondin3 is a myokine that differentiates myoblasts to type I fibres2022

    • Author(s)
      Mita Yoshitaka、Zhu Haonan、Furuichi Yasuro、Hamaguchi Hiroki、Manabe Yasuko、Fujii Nobuharu L.
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 13020-13020

    • DOI

      10.1038/s41598-022-16640-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mass spectrometry imaging reveals local metabolic changes in skeletal muscle due to chronic training.2022

    • Author(s)
      Goto-Inoue N, Morisasa M, Kimura K, Mori T, Furuichi Y, Manabe Y, Fujii NL.
    • Journal Title

      Biosci Biotechnol Biochem.

      Volume: in press Issue: 6 Pages: 730-738

    • DOI

      10.1093/bbb/zbac037

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excess Glucose Impedes the Proliferation of Skeletal Muscle Satellite Cells Under Adherent Culture Conditions.2021

    • Author(s)
      Furuichi Y, Kawabata Y, Aoki A, Mita Y, Fujii NL, Manabe.
    • Journal Title

      Front. Cell Dev. Biol.

      Volume: 9 Pages: 640399-640399

    • DOI

      10.3389/fcell.2021.640399

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Trans-omic Analysis Reveals ROS-Dependent Pentose Phosphate Pathway Activation after High-Frequency Electrical Stimulation in C2C12 Myotubes2020

    • Author(s)
      Hoshino Daisuke、Kawata Kentaro、Kunida Katsuyuki、Hatano Atsushi、Yugi Katsuyuki、Wada Takumi、Fujii Masashi、Sano Takanori、Ito Yuki、Furuichi Yasuro、Manabe Yasuko、Suzuki Yutaka、Fujii Nobuharu L.、Soga Tomoyoshi、Kuroda Shinya
    • Journal Title

      iScience

      Volume: 23 Issue: 10 Pages: 101558-101558

    • DOI

      10.1016/j.isci.2020.101558

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of treatment with conditioned media derived from C2C12 myotube on adipogenesis and lipolysis in 3T3-L1 adipocytes2020

    • Author(s)
      Tamura K, Goto-Inoue N, Miyata K, Furuichi Y, Fujii NL, Manabe Y.
    • Journal Title

      PLoS One

      Volume: 15 Issue: 8 Pages: e0237095-e0237095

    • DOI

      10.1371/journal.pone.0237095

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Musashi2の欠損はType IIa線維の減少と糖代謝量の低下を誘導する2023

    • Author(s)
      古谷 綾菜, 眞鍋 康子, 藤井 宣晴, 古市 泰郎
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 身体活動・運動が骨格筋量を維持する機序 ―糖代謝との関係に注目して―2022

    • Author(s)
      古市泰郎
    • Organizer
      第174回日本体力医学会関東地方会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 糖濃度が筋幹細胞の増殖能力に与える影響2022

    • Author(s)
      古市泰郎, 眞鍋康子, 藤井宣晴
    • Organizer
      第77回日本体力医学会医学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 骨格筋の「質」を制御するマイオカイン2021

    • Author(s)
      古市泰郎, 三田佳貴, 眞鍋康子, 藤井宣晴
    • Organizer
      第76回日本体力医学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 筋幹細胞の増殖におけるグルコースの意義2021

    • Author(s)
      古市泰郎, 川端有紀,眞鍋康子,藤井宣晴
    • Organizer
      日本筋学会第7回学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] RNA結合タンパクMusashiが骨格筋量の維持に果たす役割2020

    • Author(s)
      古市泰郎
    • Organizer
      第75回日本体力医学会大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 高グルコースは骨格筋幹細胞の増殖を抑制する2020

    • Author(s)
      古市泰郎、川端有紀、青木美穂、眞鍋康子、藤井宣晴
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 【研究発表】骨格筋の量と質を制御する新たなカギ因子を発見

    • URL

      https://www.tmu.ac.jp/news/topics/35952.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] EurekAlert! 記事

    • URL

      https://www.eurekalert.org/news-releases/1000614

    • Related Report
      2023 Annual Research Report
  • [Remarks] EurekAlert! 記事

    • URL

      https://www.eurekalert.org/news-releases/987378

    • Related Report
      2023 Annual Research Report
  • [Remarks] 東京都立大学運動分子生物学研究室

    • URL

      https://www.comp.tmu.ac.jp/muscle/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 筋肉の再生能力に関わる新たなメカニズムを発見 ―高血糖は筋幹細胞の増殖を悪化させるー

    • URL

      https://www.tmu.ac.jp/news/topics/30726.html

    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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