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Identifying the Role of GRK-5 in the Pathogenesis of Osteoarthritis and Therapeutic Potential

Research Project

Project/Area Number 21K16658
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Sueishi Takuya  九州大学, 医学研究院, 共同研究員 (40896700)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords変形性膝関節症 / 疾患修飾治療薬 / GRK5 / Amlexanox / ヒアルロン酸 / Osteoarthritis
Outline of Research at the Start

変形性関節症(以下OA)の軟骨変性進行を抑制できる有効な治療法は、現在までのところ確立されていない。本研究の先行実験において、G protein-coupled receptor kinase 5(以下GRK5)がOAの発症と進行に深く関与し、その阻害薬の関節内投与による変性抑制効果を証明した。しかしながら、GRK5のOA病態形成における働くメカニズムは解明できていない。本研究では、網羅解析手法を行いOAにおけるGRK5の機能解析を進めるとともに、阻害薬を原薬とした疾患修飾治療薬の創出へ向け、関節内投与薬の製品候補を新規に開発し、各種動物OAモデルを用いて濃度や溶媒についての効果最適化を行う。

Outline of Final Research Achievements

We aimed to develop a drug for OA disease modification using a GRK5 inhibitor as the active ingredient. In the process, we validated the optimized concentration and dosage of Amlexanox. Furthermore, the use of hyaluronic acid as a solvent for Amlexanox was found to have a synergistic effect on cartilage protection compared to a single agent.
It has been previously reported that meniscus degeneration is closely related to the pathogenesis of knee osteoarthritis, and we tested whether GRK5 is involved in meniscus degeneration. The results suggest that GRK5 does not have anabolic or catabolic effects on meniscus cells in experimental systems using human and mouse meniscus cells. Therefore, we did not proceed to further validation.

Academic Significance and Societal Importance of the Research Achievements

変形性膝関節症は膝関節の軟骨が変性摩耗する病気で、高齢者の生活の質を低下させる代表的な疾患である。現状の薬物治療は、内服(NSAID、非麻薬性鎮痛薬)と関節内注射(ヒアルロン酸、ステロイド)があるが症候改善薬であり、疾患修飾治療薬はない。
Amlexanoxはすでに他科領域において安全性が確認されており、生産コストの面でも臨床応用しやすいという利点がある。また全く違う分野の疾患の治療に役立てる試みは創造性に富んでいる。GRK5阻害薬(アンレキサノクス)とヒアルロン酸の混合によるOA進行抑制効果は相乗的であり、疾患修飾性OA治療の候補としてさらなる検証が必要である。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (4 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Promotion of Knee Cartilage Degradation by <scp>IκB</scp> Kinase ε in the Pathogenesis of Osteoarthritis in Human and Murine Models2023

    • Author(s)
      Uchida Taisuke、Akasaki Yukio、Sueishi Takuya、Kurakazu Ichiro、Toya Masakazu、Kuwahara Masanari、Hirose Ryota、Hyodo Yuki、Tsushima Hidetoshi、Lotz Martin K.、Nakashima Yasuharu
    • Journal Title

      Arthritis &amp; Rheumatology

      Volume: Online ahead of print Issue: 6 Pages: 937-949

    • DOI

      10.1002/art.42421

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] C10orf10/DEPP activates mitochondrial autophagy and maintains chondrocyte viability in the pathogenesis of osteoarthritis2022

    • Author(s)
      Kuwahara Masanari、Akasaki Yukio、Kurakazu Ichiro、Sueishi Takuya、Toya Masakazu、Uchida Taisuke、Tsutsui Tomoaki、Hirose Ryota、Tsushima Hidetoshi、Teramura Takeshi、Nakashima Yasuharu
    • Journal Title

      The FASEB Journal

      Volume: 36 Issue: 2 Pages: 22145-22161

    • DOI

      10.1096/fj.202100896r

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fluvastatin promotes chondrogenic differentiation of adipose-derived mesenchymal stem cells by inducing bone morphogenetic protein 22022

    • Author(s)
      Kuwahara Masanari、Akasaki Yukio、Goto Norio、Kurakazu Ichiro、Sueishi Takuya、Toya Masakazu、Uchida Taisuke、Tsutsui Tomoaki、Hirose Ryota、Tsushima Hidetoshi、Nakashima Yasuharu
    • Journal Title

      BMC Pharmacology and Toxicology

      Volume: 23 Issue: 1

    • DOI

      10.1186/s40360-022-00600-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Patent(Industrial Property Rights)] 変形性関節症の進行抑制剤及び進行抑制キット2021

    • Inventor(s)
      居石 卓也、他7名
    • Industrial Property Rights Holder
      居石 卓也、他7名
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2024-01-30  

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