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Regulation of osteoarthritic pain by M2 macrophages

Research Project

Project/Area Number 19K24037
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0906:Surgery related to the biological and sensory functions and related fields
Research InstitutionKitasato University

Principal Investigator

Takano Shotaro  北里大学, 医学部, 助教 (10596505)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords神経ペプチド / M2マクロファージ / 疼痛 / マクロファージ / M1 / M2
Outline of Research at the Start

OA患者の滑膜組織、OAモデルマウスを用いてM2マクロファージとOA疼痛との関連性を検討する(①、②)。M2サブタイプM2a, M2cによるOA疼痛惹起機構を明らかにする(③)。①全人工膝関節全置換術(TKA)時に採取したOA患者の滑膜組織を用いてM2マクロファージマーカーと疼痛との関連性を検討する。②薬剤誘発および自然発症OAマウス(STR/Ort)の関節内にM2マクロファージ除去剤を投与後、滑膜組織における種々の神経ペプチド発現レベルを検討する。③ゲノム編集により作製したM2a,M2c由来神経ペプチドノックアウトマウスを用いてM2由来神経ペプチドの疼痛への関与を検討する。

Outline of Final Research Achievements

We investigated role of peptide Lv in osteoarthritic pain. Bone marrow macrophages (BMM) BMM were stimulate with vehicle, LPS, or LPS + peptide Lv, and Tnfa expression and TNF-α productio. To examine the effect of peptide Lv deficiency on macrophages and synovitis, peptide Lv-deficient mice were generated using genome editing. LPS-induced Tnfa expression and TNF-α production were evaluated in BMM isolated from wildtype and peptide Lv-deficient mice. Additionally, Tnfa expression levels were compared between wildtype and peptide Lv-deficient mice with and without synovitis. Peptide Lv suppressed the LPS-mediated elevation in TNF-α. LPS stimulation significantly increased Tnfa expression and TNF-α production in BMM derived from peptide Lv-deficient mice compared to wildtype mice. Synovial TNF-α expression was elevated in peptide Lv-deficient compared to wildtype mice with synovitis. Peptide Lv may be a useful therapeutic target for synovitis.

Academic Significance and Societal Importance of the Research Achievements

変形性関節症における疼痛は患者の生活の質、日常生活動作を著しく低下させるため、健康寿命の延伸には疼痛治療は極めて重要である。本研究成果は新たな疼痛治療標的を供給するものであり、新規治療薬の開発に繋がる可能性を秘めている。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Increase in CD5L expression in the synovial membrane of knee osteoarthritis patients with obesity2021

    • Author(s)
      Shoji S, Uchida K, Inoue G, Takata K, Mukai M, Aikawa J, Iwase D, Takano S, Sekiguchi H, Takaso
    • Journal Title

      Cent Eur J Immunol

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vascular endothelial growth factor is regulated by the canonical and non-canonical transforming growth factor-β pathway in synovial fibroblasts derived from osteoarthritis patients2019

    • Author(s)
      Takano S, Uchida K, Shoji S, Itakura M, Iwase D, Aikawa J, Mukai M, Sekiguchi H, Inoue G, Takaso M.
    • Journal Title

      Biomed Res Int

      Volume: - Pages: 6959056-6959056

    • DOI

      10.1155/2019/6959056

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Osteoarthritis patients with high haemoglobin A1c have increased Toll-like receptor 4 and matrix metalloprotease-13 expression in the synovium.2019

    • Author(s)
      Murata K, Uchida K, Takano S, Shoji S, Iwase D, Aikawa J, Yokozeki Y, Sekiguchi H, Takaso M.
    • Journal Title

      Diabetes Metab Syndr Obes

      Volume: 12 Pages: 1151-1159

    • DOI

      10.2147/dmso.s209677

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 変形性膝関節症患者の滑膜組織におけるPeptide Lvの発現と疼痛への関与の検討2020

    • Author(s)
      迎 学、内田健太郎、高野昇太郎、高田研、岩瀬大、相川淳、大貫裕子、関口裕之、井上玄、高相晶士
    • Organizer
      第35回日本整形外科学会基礎学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 変形性膝関節症の滑膜組織においてTGF-βによって誘導される神経ペプチドの探索2019

    • Author(s)
      高野昇太郎、内田健太郎、相川淳、岩瀬大、迎学、宮城正行、井上玄、関口裕之、大貫裕子、高相晶士
    • Organizer
      第34回日本整形外科学会基礎学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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