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Elucidation of sex-specific signaling pathways in female-specific osteoblasts and their application to osteoporosis therapies.

Research Project

Project/Area Number 19K09659
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionMatsumoto Dental University (2021)
Kindai University (2019-2020)

Principal Investigator

Ishida Masayoshi  松本歯科大学, 総合歯科医学研究所, 講師 (50643251)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords骨粗鬆症 / 骨芽細胞 / シグナル伝達因子 / 性差 / 骨代謝
Outline of Research at the Start

骨粗鬆症の病態には顕著な性差がみられる。しかし、閉経後骨粗鬆症へエストロゲン補充療法の治療効果が限定的であることから、性ホルモンのみで性差を説明することができない。つまり骨芽細胞や破骨細胞自身に何らかの特異的な因子やシグナル系に性差が存在することが考えられた。雌由来骨芽細胞における骨芽細胞の表現型を負に抑制させるメカニズムを明らかにすれば、糖尿病やステロイド剤長期投与による骨粗鬆症発症機序を解明することにつながることが考えられる。また、新規雌骨芽細胞由来シグナル因子の解明を通して骨粗鬆症の病態解明と治療法の開発につなげる。

Outline of Final Research Achievements

PAI-1 is an inhibitor of plasminogen activator (PA), which is important for the fibrinolytic system and is known to be involved in the pathogenesis of various diseases other than hemostasis such as osteoporosis. We previously showed that PAI-1 is involved in the pathogenesis of diabetic osteoporosis only in female mice and suppresses osteoblast differentiation and function only in female-derived osteoblasts.
Therefore, we used comprehensive gene expression analysis to extract genes whose expression was increased by PAI-1 stimulation in female osteoblasts, and RanBP3L was extracted, and functional analysis of the RanBP3L gene showed that it suppressed osteoblast function and differentiation, suggesting that the RanBP3L gene is involved in the PAI-1-mediated differentiation of osteoblasts in females. This suggests that the RanBP3L gene is involved in the pathogenesis of diabetic osteoporosis.

Academic Significance and Societal Importance of the Research Achievements

骨粗鬆症の病態形成において、明らかな性差が認められ、これまでは、多くの研究において、性ホルモンの作用機構という観点から、多くの研究が進められてきた。しかし、性ホルモン以外の性差を説明する機構については、ほとんど何もわかっていないのが現状である。本研究成果は性ホルモン関連以外の骨粗鬆症病態を説明する新規な因子を見出したところに学術的意義があり、骨粗鬆症の発症の機序を解明し、治療薬の開発につながる点において社会的意義がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (1 results)

  • [Journal Article] Role of peripheral myelin protein 22 in chronic exercise‐induced interactions of muscle and bone in mice2022

    • Author(s)
      Kawaguchi Miku、Kawao Naoyuki、Muratani Masafumi、Takafuji Yoshimasa、Ishida Masayoshi、Kinoshita Yuko、Takada Yuto、Mizukami Yuya、Ohira Takashi、Kaji Hiroshi
    • Journal Title

      Journal of Cellular Physiology

      Volume: - Issue: 5 Pages: 1-11

    • DOI

      10.1002/jcp.30706

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of tissue factor in delayed bone repair induced by diabetic state in mice2021

    • Author(s)
      Ehara Hiroki、Tatsumi Kohei、Takafuji Yoshimasa、Kawao Naoyuki、Ishida Masayoshi、Okada Kiyotaka、Mackman Nigel、Kaji Hiroshi
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 12 Pages: e0260754-e0260754

    • DOI

      10.1371/journal.pone.0260754

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of Angptl1 on osteoclast formation and osteoblastic phenotype in mouse cells2021

    • Author(s)
      Ishida Masayoshi、Kawao Naoyuki、Mizukami Yuya、Takafuji Yoshimasa、Kaji Hiroshi
    • Journal Title

      BMC Musculoskeletal Disorders

      Volume: 22 Issue: 1 Pages: 398-398

    • DOI

      10.1186/s12891-021-04278-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serpinb1a suppresses osteoclast formation2021

    • Author(s)
      Ishida Masayoshi、Kawao Naoyuki、Mizukami Yuya、Takafuji Yoshimasa、Kaji Hiroshi
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 26 Pages: 101004-101004

    • DOI

      10.1016/j.bbrep.2021.101004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Roles of Dkk2 in the linkage from muscle to bone during mechanical unloading in mice2020

    • Author(s)
      Kawao N, Morita H, Iemura S, Ishida M, Kaji H
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 7 Pages: 2547-2547

    • DOI

      10.3390/ijms21072547

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Myonectin inhibits the differentiation of osteoblasts and osteoclasts in mouse cells2020

    • Author(s)
      Kawaguchi M, Kawao N, Takafuji Y, Ishida M, Kaji H.
    • Journal Title

      Heliyon.

      Volume: 6 Issue: 5 Pages: e03967-e03967

    • DOI

      10.1016/j.heliyon.2020.e03967

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PAI-1 is involved in delayed bone repair induced by glucocorticoids in mice.2020

    • Author(s)
      Okada K, Okamoto T, Okumoto K, Takafuji Y, Ishida M, Kawao N, Matsuo O, Kaji H.
    • Journal Title

      Bone

      Volume: 134 Pages: 115310-115310

    • DOI

      10.1016/j.bone.2020.115310

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Roles of olfactomedin 1 in muscle and bone alterations induced by gravity change in mice2020

    • Author(s)
      Shimode T, Kawao N, Morita H, Ishida M, Takafuji Y, Kaji H
    • Journal Title

      Calcified Tissue International

      Volume: 27 Issue: 2 Pages: 180-190

    • DOI

      10.1007/s00223-020-00710-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] RanBP3LはPlasminogen activator inhibitor(PAI)-1のマウス骨芽細胞作用における性差に関与する2019

    • Author(s)
      石田昌義、河尾直之、岡田清孝、辰巳公平、松尾 理、高藤義正、峯 嘉宏、梶 博史
    • Organizer
      第37回日本骨代謝学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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