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Development of a new treatment for sarcopenia based on the regulation of O-linked glycosylation

Research Project

Project/Area Number 22K19754
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 59:Sports sciences, physical education, health sciences, and related fields
Research InstitutionKyushu University

Principal Investigator

Kinugawa Shintaro  九州大学, 医学研究院, 准教授 (60399871)

Co-Investigator(Kenkyū-buntansha) 松島 将士  九州大学, 医学研究院, 助教 (80552869)
Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsサルコペニア / 翻訳後修飾 / O結合グリコシル化 / 健康寿命 / 翻訳語修飾
Outline of Research at the Start

本研究は、『加齢における骨格筋萎縮の進展にタンパク合成や分解に関わる種々のタンパクのO-GLcNAc化修飾が重要な役割を果たしている』という仮説を立て、O-GlcNAc化の制御による骨格筋萎縮の予防・治療法を開発することを目的とする。骨格筋が生体の代謝の中心であることに注目し、その代謝産物による翻訳後修飾であり、リン酸化と競合的に働くO-GlcNAc化修飾に着目した点が、本研究の新規性である。本研究では、これまで注目されていなかったO-GlcNAc化修飾に注目して、加齢における骨格筋萎縮にO-GlcNAc化修飾が重要な役割を果たしているのではないか、という学術的に根本的な疑問の解決に挑戦する。

Outline of Final Research Achievements

Skeletal muscle atrophy (decreased skeletal muscle weight, decreased skeletal muscle cell diameter) was observed in C57BL/6J mice as they aged, and the balance between protein synthesis and protein degradation was disrupted. O-GlcNAcylation of skeletal muscle proteins tended to increase overall, but there were differences in increases and decreases depending on the molecular weight. GFAT1, a rate-limiting enzyme in the hexosamine biosynthesis pathway, was increased in skeletal muscle, and OGA, which removes O-GlcNac, was decreased. When 6-Diazo-5-oxo-L-norleucin (DON), a GFAT inhibitor, was administered to aging mice for 3 months, a decrease in skeletal muscle weight and a decrease in cell diameter were attenuated compared to the vehicle-administered group.

Academic Significance and Societal Importance of the Research Achievements

サルコペニア患者に対する有効な予防・治療法はなく、筋力トレーニングを併用した運動療法を継続するしかないが、その効果は不十分であり、継続が困難な場合も多い。本研究では、これまで注目されていなかったO-GlcNAc化修飾に注目して、加齢における骨格筋萎縮にO-GlcNAc化修飾が重要な役割を果たしていることを明らかにした点で学術的意義が高い。骨格筋萎縮に対するO-GlcNAc化修飾制御という我々独自のパラダイムに基づく予防・治療法の基礎的基盤を築くことができれば、サルコペニアの新規予防・治療法の臨床応用の実現性は高く、健康寿命の実現に大きく寄与すると考えられ、社会的意義が大きい。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (6 results)

All 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (2 results) (of which Invited: 2 results)

  • [Journal Article] Ergogenic effects of caffeine are mediated by myokines2022

    • Author(s)
      Takada Shingo、Fumoto Yoshizuki、Kinugawa Shintaro
    • Journal Title

      Frontiers in Sports and Active Living

      Volume: 4 Pages: 1-8

    • DOI

      10.3389/fspor.2022.969623

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cross-disease communication between cancer and heart failure provides a rational approach to prevention and treatment of both diseases2022

    • Author(s)
      Takada Shingo、Kinugawa Shintaro、Handa Haruka、Yokota Takashi、Sabe Hisataka
    • Journal Title

      Frontiers in Oncology

      Volume: 12 Pages: 1-5

    • DOI

      10.3389/fonc.2022.1006322

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Succinyl-CoA-based energy metabolism dysfunction in chronic heart failure2022

    • Author(s)
      Takada Shingo、Maekawa Satoshi、Furihata Takaaki、Kakutani Naoya、Setoyama Daiki、Ueda Koji、Nambu Hideo、Hagiwara Hikaru、Handa Haruka、Fumoto Yoshizuki、Hata Soichiro、Masunaga Tomoka、Fukushima Arata、Yokota Takashi、Kang Dongchon、Kinugawa Shintaro、Sabe Hisataka
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 41 Pages: 1-9

    • DOI

      10.1073/pnas.2203628119

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Protective roles of MITOL against myocardial senescence and ischemic injury partly via Drp1 regulation2022

    • Author(s)
      Tokuyama T、Uosaki H、Sugiura A、Nishitai G、Takeda K、Nagashima S、Shiiba I、Ito N、Amo T、Mohri S、Nishimura A、Nishida M、Konno A、Hirai H、Ishido S、Yoshizawa T、Shindo T、Takada S、Kinugawa S、Inatome R、Yanagi S
    • Journal Title

      iScience

      Volume: 25 Issue: 7 Pages: 104582-104582

    • DOI

      10.1016/j.isci.2022.104582

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 心不全における骨格筋エネルギー代謝異常2022

    • Author(s)
      絹川真太郎
    • Organizer
      日本心不全学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Skeletal muscle abnormalities and myokines in heart failure2022

    • Author(s)
      絹川真太郎
    • Organizer
      日本循環器学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-07-05   Modified: 2025-01-30  

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