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Identification of periodontal ligament stem cells contributing to the orthodontic tooth movement

Research Project

Project/Area Number 20K23023
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0907:Oral science and related fields
Research InstitutionNiigata University

Principal Investigator

Mizukoshi Masaru  新潟大学, 医歯学総合病院, 医員 (20882731)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords歯根膜 / 増殖活性 / 幹細胞 / 矯正的歯の移動 / 細胞増殖活性 / 歯根膜組織幹細胞
Outline of Research at the Start

歯を歯槽骨に固定する歯根膜には豊富な幹細胞が存在するとされているが,矯正的な歯の移動時におけるその挙動は依然として不明である.一方,生涯成長を続けるマウス切歯の幹細胞は,その分化過程において増殖活性を大きく変化させることが知られている.そこで発生学的な起源が同一である歯根膜組織の幹細胞動態を,細胞増殖活性の解析により明らかにする方法を着想した.本研究では,矯正的歯の移動中における歯根膜細胞の増殖活性を解析することで,組織幹細胞を起点とした歯根膜細胞の分化動態を明らかにし,歯根膜組織の再構築に寄与する細胞動態を理解する.

Outline of Final Research Achievements

Proliferating cells in the periodontal ligament temporarily increased with orthodontic force, and changes in proliferative activity were observed throughout the tissue. In cell tracking experiments using RGBow, clusters of proliferatively active cells were formed throughout the tissue. Furthermore, proliferating cells expressed various differentiation markers and were composed of diverse cell groups.
This study indicates that the cellular supply of the mouse molar periodontal ligament under mechanical stimulation is not carried by specific cells, but by a variety of cells.

Academic Significance and Societal Importance of the Research Achievements

本研究が示した歯根膜細胞の力学的刺激に対する特性は,歯科臨床における組織恒常性の理解と,革新的な治療法の開発における基礎的知見として極めて意義の高いものである.

Report

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

    (3 results)

All 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] In vivo cell proliferation analysis and cell-tracing reveal the global cellular dynamics of periodontal ligament cells under mechanical-loading2021

    • Author(s)
      Mizukoshi Masaru、Kaku Masaru、Thant Lay、Kitami Kohei、Arai Moe、Saito Isao、Uoshima Katsumi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 9813-9813

    • DOI

      10.1038/s41598-021-89156-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] マウス臼歯歯根膜 における Label Retaining Cell の局在と特性2021

    • Author(s)
      水越 優,加来 賢,北見公平,新井萌生,岩間 基,魚島勝美,齋藤 功
    • Organizer
      第 80 回日本矯正歯科学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Characterization of Label Retaining Cells in Periodontal Ligament2020

    • Author(s)
      Masaru Mizukoshi, Masaru Kaku, Kohei Kitami, Moe Arai, Katsumi Uoshima, Isao Saito
    • Organizer
      9th International Orthodontic Congress
    • Related Report
      2020 Research-status Report

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Published: 2020-09-29   Modified: 2023-01-30  

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