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Pioneering Treatment of Osteoarthritis by Regulation of HYBID, in Hypoxia

Research Project

Project/Area Number 20K09507
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Inoue Hiroaki  京都府立医科大学, 医学(系)研究科(研究院), 客員講師 (60457968)

Co-Investigator(Kenkyū-buntansha) 松田 修  京都府立医科大学, 医学(系)研究科(研究院), 教授 (00271164)
中川 周士  京都府立医科大学, 医学(系)研究科(研究院), 助教 (30643382)
新井 祐志  京都府立医科大学, 医学(系)研究科(研究院), 准教授 (50347449)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsHYBID / 低酸素 / ヒアルロン酸 / 変形性関節症
Outline of Research at the Start

変形性関節症(osteoarthritis;OA)に対する保存療法として高分子ヒアルロン酸(hyaluronic acid;HA)の関節内注射が広く使用されている.しかし,高分子HAは関節内で速やかに分解されるため十分な効力を発揮するには分解を抑制し分子構造を維持する必要がある.HAの分解は新規分子HYBIDが中心的な役割を担い,OAでその発現が亢進している.われわれは関節内の低酸素環境がHAの薬理作用を高めることを見出した.低酸素刺激はHYBIDの制御因子も亢進させることから,低酸素環境の強化は高分子HAの効果増強に加え,分解抑制により従来のHA治療に代わる新たな治療戦略となりうる.

Outline of Final Research Achievements

HYBID plays a central role in hyaluronan degradation, and its expression is upregulated in OA compared to normal joints, which correlates with the ability to degrade hyaluronan. We hypothesized that the enhanced inhibitory effect of HYBID could be a new therapeutic strategy, and researched the factors that enhance the inhibitory effect.
We investigated the effect of hypoxia on HYBID suppression using chondrocytes in which HYBID expression was suppressed by siHYBID transfection. However, the effect of hypoxia on HYBID was not significant, suggesting that hypoxia alone is not sufficient as a regulator of HYBID and further studies are needed.

Academic Significance and Societal Importance of the Research Achievements

変形性関節症(osteoarthritis; OA)に対する保存療法として高分子ヒアルロン酸 (hyaluronic acid: HA)の関節内注射が広く使用されている.しかし,高分子 HA は関節内で速やかに分解されるため,十分な効力を発揮するには分解を抑制する必要がある.我々はHA分解抑制を増強する因子を開拓することにより,定期的な関節注射がメインである従来のHA治療を大幅に改善することが可能であると考え,HYBIDに注目し主に低酸素環境が与える影響について検討を行った.しかし,低酸素環境がHYBID抑制を増強する効果は軽微であり,低酸素環境以外の因子も含めたさらなる検討が必要である.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2022 2021 2020

All Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] Sustained hypoxia suppresses the production of pro-inflammatory cytokines in rheumatoid arthritis synovial cell via negative feedback of HIF-1α2022

    • Author(s)
      Kaihara K, Nakagawa S, Inoue H, Inoue A, Arai Y, Fujii Y, Kamada Y, Cha R, Mazda O, Takahashi K
    • Organizer
      2022 ORS annual meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of heat stress on SIRT1-transfected chondrocytes2021

    • Author(s)
      Kaihara K, Inoue H, Nakagawa S, Arai Y, Fujii Y, Mazda O, Takahashi K
    • Organizer
      2021 Annual Meeting of Orthopaedic Research Society(国際学会)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Influence of heat stress on SIRT1-transfected chondrocytes2021

    • Author(s)
      Kaihara K, Inoue H, Nakagawa S, Arai Y, Fujii Y, Mazda O, Takahashi K
    • Organizer
      2021 Annual Meeting of Orthopaedic Research Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] SIRT1導入細胞に対する温熱ストレスの検討2020

    • Author(s)
      貝原健太,井上裕章,中川周士,新井祐志,藤井雄太,松田 修,高橋謙治
    • Organizer
      第35回日本整形外科学会基礎学術集会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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