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Novel therapeutic approaches for rheumatoid arthritis through regulation of gap junction proteins and exercise therapy

Research Project

Project/Area Number 20K11214
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Tsuchida Shinji  京都府立医科大学, 医学(系)研究科(研究院), 助教 (10719834)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsギャップ結合 / コネキシン / 関節リウマチ / 運動療法 / リハビリテーション治療 / 細胞間コミュニケーション制御
Outline of Research at the Start

関節リウマチ(RA)の滑膜炎,骨破壊が,免疫異常による細胞間コミュニ ケーションの破綻により生じることに着目し,細胞間情報伝達に重要なギャップ結合(GJ)の研究をすすめてきた.GJタンパクがヒトRA滑膜に高発現していることを明らかにし,RA動物モデルの滑膜におけるGJタンパクを局所的に発現阻害することで 一定の治療効果を得た.運動療法にも注目し,トレッドミル走行時のRA動物モデル関節内における分子生物学的な影響を解析し,疾患活動性をコントロールできる運動量を示してきた.本研究ではGJの機能制御と運動療法の組み合わせによるhybrid RA治療法にむけた基礎データを構築することを目的とする.

Outline of Final Research Achievements

We assessed the differences in the efficasy of treadmill running on rheumatoid arthritis at various phases, using rat rheumatoid arthritis models. Rats with collagen-induced arthritis were used , and the phase after immunization was divided as pre-arthritis and established phases. Histologically, the groups with forced treadmill running in the established phase had significantly inhibited joint destruction compared with the other groups. The group with forced treadmill running in only the established phase had significantly better bone morphometry and reduced expression of connexin 43 and tumor necrosis factor α in the synovial membranes compared with the no treadmill group. Furthermore, few cells were positive for cathepsin K immunostaining in the groups with forced treadmill running in the established phase. Our results suggest that the efficacy of exercise therapy may differ depending on rheumatoid arthritis disease activity.

Academic Significance and Societal Importance of the Research Achievements

研究代表者らはCx43が滑膜におけるTNF-α.IL-6,IL-1βなど炎症性サイトカインを介して関節破壊を誘導することを明らかにしてきた.しかしRAにおいて運動負荷におけるCx43の発現動態は不明であった.本研究でRA動物モデルにおいて一定の運動療法により滑膜内におけるCx43の産生を抑制し,TNF-αの発現を抑制した.また,関節炎期における運動療法によりcathepsin K陽性細胞は減少し,骨形態評価で骨破壊を抑制する効果も明らかにした.臨床上,RA患者の関節炎を経時的に評価し運動療法の施行時期や負荷量を決定することで,Cx43の発現を制御しながら効率的な治療を施行できる可能性がある.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] A Natural Organic Compound “Decursin” Has Both Antitumor and Renal Protective Effects: Treatment for Osteosarcoma2023

    • Author(s)
      Hayashi Daichi、Shirai Toshiharu、Terauchi Ryu、Tsuchida Shinji、Mizoshiri Naoki、Mori Yuki、Shimomura Seiji、Mazda Osam、Takahashi Kenji
    • Journal Title

      Journal of Oncology

      Volume: 2023 Pages: 1-15

    • DOI

      10.1155/2023/5445802

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hypoxia promotes differentiation of pure cartilage from human induced pluripotent stem cells.2022

    • Author(s)
      Shimomura S, Inoue H, Arai Y, Nakagawa S, Fujii Y, Kishida T, Shin-Ya M, Ichimaru S, Tsuchida S, Mazda O, Kubo T.
    • Journal Title

      Mol Med Rep

      Volume: 26 Issue: 1 Pages: 229-229

    • DOI

      10.3892/mmr.2022.12745

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical stimulation of chondrocytes regulates HIF-1α under hypoxic conditions2021

    • Author(s)
      Shimomura S, Inoue H, Arai Y, Nakagawa S, Fujii Y, Kishida T, Shin-Ya M, Ichimaru S, Tsuchida S, Mazda O, Takahashi K.
    • Journal Title

      Tissue Cell .

      Volume: Aug;71:101574. Pages: 101574-101574

    • DOI

      10.1016/j.tice.2021.101574

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Treadmill Running in Established Phase Arthritis Inhibits Joint Destruction in Rat Rheumatoid Arthritis Models2019

    • Author(s)
      Fujii Yuta、Inoue Hiroaki、Arai Yuji、Shimomura Seiji、Nakagawa Shuji、Kishida Tsunao、Tsuchida Shinji、Kamada Yoichiro、Kaihara Kenta、Shirai Toshiharu、Terauchi Ryu、Toyama Shogo、Ikoma Kazuya、Mazda Osam、Mikami Yasuo
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 20 Issue: 20 Pages: 5100-5100

    • DOI

      10.3390/ijms20205100

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Iodine-loaded implants in prevention and treatment of surgical site infections for compromised hosts2023

    • Author(s)
      Shirai T, Tsuchiya H, Terauchi R, Tsuchida S, Shimomura S, Takahashi K
    • Organizer
      2023 Annual Meeting of the American Academy of Orthopaedic Surgeons
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Treadmill running suppressed joint destruction in a rheumatoid arthritis rat model2020

    • Author(s)
      Fujii Y, Inoue H, Arai Y, Shimomura S, Nakagawa S, Tsuchida S, Kamada Y, Kaihara K, Mazda O, Mikami Y
    • Organizer
      Transaction of 65th Annual Meeting of the Orthopaedic Research Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of hif-1α stabilization by deferoxamine on chondrocyte and articular cartilage2020

    • Author(s)
      Kaihara K, Nakagawa S, Arai Y, Fujii Y, Inoue H, Tsuchida S, Kamada Y, Mazda O, Mikami Y
    • Organizer
      Transaction of 65th Annual Meeting of the Orthopaedic Research Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of reaction to tensile stress in chondrocytes in hypoxic environment2020

    • Author(s)
      Kamada Y, Inoue H, Arai Y, Shimomura S, Nakagawa S, Tsuchida S, Fujii Y, Kaihara K, Mazda O, Mikami Y
    • Organizer
      Transaction of 65th Annual Meeting of the Orthopaedic Research Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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