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Inhibition for progressive mandibular condylar resorption by selective cartilage destruction inhibition using modified TIMP-3

Research Project

Project/Area Number 21K10135
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionKanazawa University

Principal Investigator

Ooi Kazuhiro  金沢大学, 附属病院, 講師 (90451450)

Project Period (FY) 2021-04-01 – 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 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords進行性下顎頭吸収 / マウスモデル / 発症メカニズム / 発症抑制 / STR/ortマウス / [-1A]TIMP-3 / 下顎頭軟骨破壊 / 抑制効果 / STR/Ortマウス / CBAマウス / アグリカネーゼ / 変形性顎関節症 / 改変型TIMP-3 / 選択的軟骨破壊抑制
Outline of Research at the Start

進行性下顎頭吸収 (PCR)は、顎関節を構成する下顎頭の吸収が進行性に短期間で生じ、下顎後退や開咬により咀嚼障害などの著しいQOLの低下を招く難治性疾患であるが、発症原因はほとんど不明で根本的な治療法は確立されていない。本研究では、ヒトとSTR/ortマウスのPCR組織を比較解析してPCRの疾患マウスモデルを確立させ、アグリカネーゼを選択的に阻害する改変型TIMP-3([-1A]TIMP-3)を遺伝子導入し、メカニカルストレス刺激下に骨・軟骨・筋・腱などの多種組織を解析する。[-1A]TIMP-3による下顎頭軟骨破壊の抑制効果を多角的に分子レベルで解明し、PCRの新たな分子標的薬の開発を目指す

Outline of Final Research Achievements

We investigated whether STR/ort mice spontaneously develop mandibular condylar resorption in the temporomandibular joint as part of an international research project in collaboration with the University of Liverpool. We found that STR/Ort mice showed a higher incidence of mandibular condylar resorption after 20 weeks of age than control CBA mice. We also demonstrated that [-1A]TIMP-3, which selectively inhibits aggrecanase, suppresses the progression of condylar resorption in STR/Ort mice. These data suggest that aggrecanase is the major cartilage-degrading enzyme in mandibular condylar resorption and that [-1A]TIMP-3 may be an effective treatment for progressive mandibular condylar resorption.

Academic Significance and Societal Importance of the Research Achievements

進行性下顎頭吸収(以下PCR)は顎関節を構成する下顎頭の吸収が進行性に短期間で生じ、下顎後退や開咬により咀嚼障害などの著しいQOLの低下を招く難治性疾患で、患者は顎関節の痛み、開口障害、不正咬合などで食事や会話に支障をきたす。これまでPCRの発症メカニズムが十分に明らかにされていなかったため発症を抑制する根本的な治療はなかったが、本研究の結果により今後、PCRの薬物療法などにつながる可能性が示唆された。

Report

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

    (7 results)

All 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] University of Liverpool(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Liverpool/Lifecourse and Medical Sciences/Musculoskeletal and Ageing Science(英国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Metalloelastase-12 is involved in the temporomandibular joint inflammatory response as well as cartilage degradation by aggrecanases in STR/Ort mice2021

    • Author(s)
      Yamashita-futani Yoko、Jokaji Rei、Ooi Kazuhiro、Kobayashi Kazuhiko、Kanakis Ioannis、Liu Ke、Kawashiri Shuichi、Bou-gharios George、Nakamura Hiroyuki
    • Journal Title

      Biomedical Reports

      Volume: 14 Issue: 6 Pages: 1-8

    • DOI

      10.3892/br.2021.1427

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Targeted inhibition of aggrecanases inhibits the progression of age-dependent cartilage degradation in a temporomandibular joint in the STR/Ort mice2023

    • Author(s)
      1.Kazuhiro Ooi, Yutaka Kobayashi, Kazuhiro Yamamoto, Ioannis Kanakis, Yoko Yamashita, Takao Sakai, Fadi Jarad, Hiroyuki Nakamura, George Bou-Gharios, Shuichi Kawashiri
    • Organizer
      Cutting Edge Osteoarthritis
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Targeted inhibition of aggrecanases inhibits the progression of age-dependent cartilage degradation in a temporomandibular joint in the STR/Ort mice2023

    • Author(s)
      3.Kazuhiro Ooi, Yutaka Kobayashi, Kazuhiro Yamamoto, Ioannis Kanakis, Yoko Yamashita, Takao Sakai, Fadi Jarad, Hiroyuki Nakamura, Shuichi Kawashiri, George Bou-Gharios
    • Organizer
      European Society for Temporomandibular Joint Surgeons meeting 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Targeted inhibition of aggrecanases inhibits the progression of age-dependent cartilage degradation in a temporomandibular joint in the STR/Ort mice2022

    • Author(s)
      Yutaka Kobayashi1,2, Kazuhiro Yamamoto1, Ioannis Kanakis3, Akinobu Kawano2, Yoko Yamashita2, Takao Sakai4, Fadi Jarad5, Hiroyuki Nakamura6, Shuichi Kawashiri2, George Bou-Gharios1, Kazuhiro Ooi2.
    • Organizer
      Cutting Edge Osteoarthritis Meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 遺伝子改変STR/Ortマウスを用いた変形性顎関節症の病態解明と発症抑制の試み2022

    • Author(s)
      大井一浩
    • Organizer
      第35回一般社団法人日本顎関節学会総会・学術大会
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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