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The role of chondrocyte/senescent cells-derived exosomal microRNA in pathogenesis of osteoarthritis, and in silico drug discoveryathogenesis of osteoarthritis and in silico drug discovery

Research Project

Project/Area Number 19H03785
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionHiroshima University

Principal Investigator

Miyaki Shigeru  広島大学, 病院(医), 講師 (10392490)

Co-Investigator(Kenkyū-buntansha) 眞田 洋平  広島大学, 病院(医), 研究員 (50796117)
山西 芳裕  九州工業大学, 大学院情報工学研究院, 教授 (60437267)
中佐 智幸  広島大学, 病院(医), 講師 (60467769)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords変形性関節症 / microRNA / 細胞老化 / ドラックリポジショニング / 機械学習 / 老化細胞 / エクソソーム
Outline of Research at the Start

本研究は、変形性関節症(OA)の分子機構の理解と新たな治療薬開発のために老化細胞におけるmicroRNA(miRNA)やmiRNAを含む細胞外小胞(エクソソーム)に注目するものである。そこで、「老化細胞から分泌するmiRNAを含むエクソソームが関節恒常性ネットワークの破綻とOA発症に関係する」という仮説のもと、若齢および老齢サンプルなどを用いて老化細胞由来のmiRNAを含むエクソソームとOAの関係を探索する。そして、細胞内在型およびエクソソーム中のmiRNAのOAへの関与を遺伝子改変マウスを用いて明らかにする。

Outline of Final Research Achievements

Osteoarthritis (OA) is the most prevalent arthritic disease. The present study focused on the role of chondrocyte/senescent cells-derived cellular/exosomal microRNA in OA pathogenesis and in silico drug discovery for OA treatment. Although miR-23 a/b cluster and miR-26a were highly expressed in articular chondrocytes, both cellular and exsomal miRNAs (miR-23a/b and miR-26a) are not essential for OA pathogenesis associated with aging, and mechanical overload and local inflammation by trauma. However, both knock out mice exhibited accelerated aging-phenotype such as bone loss. Thus, we should further examine what function of these miRNAs including exosomal miRNAs is derived from which cells, and their target genes in order to reveal the mechanism of accelerated aging-like phenotype such as osteopenia in knock out mice. These future results might open a new insight in aging mechanisms through miR-23 a/b clusters and miR-26a.

Academic Significance and Societal Importance of the Research Achievements

これまで in vitro 実験によりOAにおけるmiR-23a/bクラスターおよびmiR-26aの機能が報告されてきたが、議論の余地があった。本研究による遺伝子改変マウスの結果から、これらmiRNAは軟骨細胞で高発現しているものの、細胞内および分泌型miRNAとしてもOA発症に本質的な役割がないことを明らかにできた。さらに、これらmiRNAのノックアウトマウスは、骨密度の低下など老化様の表現系を示すことから、今後の研究によりmiR-23 a/bクラスターとmiR-26aを介した老化メカニズムの新しい洞察を開く可能性がある。また、未だ治療薬のないOAの治療薬を探索することには意義がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (8 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results) (of which Invited: 2 results)

  • [Int'l Joint Research] Scripps Research(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] スクリプス研究所(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Therapeutic effect of targeting Substance P on the progression of osteoarthritis2021

    • Author(s)
      Shirakawa Y, Nakasa T, Kanemitsu M, Nekomoto A, Ishikawa M, Yimiti D, Miyaki S, Adachi N.
    • Journal Title

      Mod Rheumatol

      Volume: - Issue: 6 Pages: 1175-1185

    • DOI

      10.1093/mr/roab089

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pharmacological Targeting of Heme Oxygenase-1 in Osteoarthritis2021

    • Author(s)
      Sanada Yohei, Tan Sho Joseph Ozaki, Adachi Nobuo, Miyaki Shigeru
    • Journal Title

      Antioxidants

      Volume: 10 Issue: 3 Pages: 419-419

    • DOI

      10.3390/antiox10030419

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Histological scoring system for subchondral bone changes in murine models of joint aging and osteoarthritis2020

    • Author(s)
      Nagira Keita, Ikuta Yasunari, Shinohara Masahiro, Sanada Yohei, Omoto Takenori, Kanaya Haruhisa, Nakasa Tomoyuki, Ishikawa Masakazu, Adachi Nobuo, Miyaki Shigeru, Lotz Martin
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 10077-10077

    • DOI

      10.1038/s41598-020-66979-7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 変形性関節症におけるmicroRNAとエピトランスクリプトーム2022

    • Author(s)
      味八木 茂
    • Organizer
      第34回日本軟骨代謝学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 変形性関節症の発症におけるmiR-23a/b clusterの役割2022

    • Author(s)
      藤原祐輔、味八木茂、眞田洋平、Chenyang Ding、秋本崇之、中佐智幸、石川正和、亀井直輔、安達伸生
    • Organizer
      第34回日本軟骨代謝学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新たな細胞間コミュニケーション因子”エクソソーム”の関節疾患や組織再生への応用2021

    • Author(s)
      味八木 茂
    • Organizer
      第8回JAPSAM PRP・幹細胞研究会
    • Related Report
      2021 Annual Research Report
    • Invited

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Published: 2019-04-18   Modified: 2023-01-30  

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