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Elucidation of the Mechanism by Which MSC-Exosomes Facilitate Achilles Tendon Healing

Research Project

Project/Area Number 22K16767
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionHiroshima University

Principal Investigator

Hayashi Yuta  広島大学, 医系科学研究科(医), 寄附講座助教 (20881296)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsアキレス腱 / 腱修復 / 間葉系幹細胞(MSC) / 細胞外小胞 / レチノイン酸受容体作動薬 / 細胞系統解析 / 遺伝子改変マウス / 細胞系譜解析 / 糖鎖 / 骨髄間葉系幹細胞(MSC) / エクソソーム
Outline of Research at the Start

マウスアキレス腱切離モデルを用いて、骨髄間葉系幹細胞(MSC)由来エクソソームがアキレス腱修復過程で石灰化などを抑制し、その修復を促進することを明らかにした。しかし、1)腱修復促進に関与する細胞群は何か 2)MSCの継代数(細胞老化)により変化したエクソソーム上の糖鎖は、腱修復効果にどう関与するのか、などMSC由来エクソソームによる腱修復促進メカニズムは未解明な部分が多い。そこで本研究は、これらの疑問を明らかにすることで、MSC由来エクソソームによるさらなる詳細な腱修復機構やエクソソームの機能を解明するだけでなく、MSC由来エクソソームを利用した新たな治療法の開発へとつなげていく。

Outline of Final Research Achievements

Tendon injuries, such as Achilles tendon rupture, are among the most frequent sports-related musculoskeletal injuries. However, treatment methods for these injuries have not significantly changed in recent decades. This study demonstrates that the local administration of mesenchymal stem cell-derived extracellular vesicles (MSC-EVs) and retinoic acid receptor agonists facilitates Achilles tendon healing. Additionally, the involvement of tendon/ tendon progenitor cells such as Scleraxis- and Tppp3-positive cells in tendon healing is shown using newly generated genetically modified mice.

Academic Significance and Societal Importance of the Research Achievements

数十年大きく変化していない腱損傷の治療法であるが、MSC-EVやレチノイン酸受容体作動薬の局所投与がアキレス腱損傷における修復促進効果を示し、そのメカニズムの一部を明らかにしたこと、そのための解析ツールとして遺伝子改変マウスを作製したことに学術的および社会的な意義がある。

Report

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

    (2 results)

All 2024 2022

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

  • [Journal Article] The therapeutic capacity of bone marrow MSC-derived extracellular vesicles in Achilles tendon healing is passage-dependent and indicated by specific glycans.2022

    • Author(s)
      Hayashi Y, Yimiti D, Sanada Y, Ding C, Omoto T, Ogura T, Nakasa T, Ishikawa M, Hiemori K, Tateno H, Miyaki S, Adachi N.
    • Journal Title

      FEBS Lett.

      Volume: 596(8) Issue: 8 Pages: 1047-1058

    • DOI

      10.1002/1873-3468.14333

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Local Administration of CD1530, Selective RARγ Agonist, Facilitates Tendon Healing by Modulating the Healing Environment Including Reduced Heterotopic Ossification in a Mouse Achilles Rupture Model2024

    • Author(s)
      Dilimulati Yimiti, Kenta Uchibe, Minoru Toriyama, Yuta Hayashi, Yasunari Ikuta, Tomoyuki Nakasa, Haruhiko Akiyama, Chisa Shukunami, Nobuo Adachi, Shigeru Miyaki
    • Organizer
      Orthopaedic Research Society 2024 Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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