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Osteoclast regulation by ITAM motif and Stat1

Research Project

Project/Area Number 20K09461
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionKumamoto University

Principal Investigator

Fujimoto Toru  熊本大学, 大学院生命科学研究部(医), 特定研究員 (00433003)

Co-Investigator(Kenkyū-buntansha) 宮本 健史  熊本大学, 大学院生命科学研究部(医), 教授 (70383768)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2023: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords整形外科 / 破骨細胞
Outline of Research at the Start

脊椎手術・人工関節手術・骨折手術・靭帯再建手術など、整形外科にはインプラントが不可欠な手術が多い。インプラントは、生体の立場からは異物であり、排除を受けず免疫寛容を促す必要がある。スクリュー等の骨内インプラントでは、ゆるみはインプラントの機能不全に直結する。ゆるみをきたさないためには、局所の骨吸収を抑制する必要がある。 ITAMとStat1の関連に関しては、破骨細胞分化並びに骨吸収制御においてはこれまでに知見がなく、新たな切り口に基づく骨吸収制御法の提案が可能になると期待できると考えている。

Outline of Final Research Achievements

Various bone-placed medical implants, such as artificial joints and bone-joint plates, are in use. Bone resorption around such in vivo bone implants causes loosening and other problems, but the mechanism underlying bone resorption around implants was not clear. In this study, we found that CTLA4-Fc, which suppresses CTLA4-CD80/86 signaling, directly inhibits osteoclast differentiation by suppressing calcium oscillation and NFATc1 expression induced by RANKL, a cytokine essential for osteoclast differentiation that is responsible for bone resorption around implants. We also found that this action of CTLA4 is mediated by FcRγ, one of the ITAMs.

Academic Significance and Societal Importance of the Research Achievements

人工関節などの骨設置型の医療用インプラントは、今日の医療に欠かせない。しかし、骨設置型の医療用インプラントの周囲で骨吸収が起こると、インプラントの抜去や再設置など、患者にとって極めて負担の大きな事態を余儀なくされることもしばしばであり、その対策は重要である。インプラント周囲の骨吸収は破骨細胞によって誘導されるが、本研究ではインプラントに反応して誘導される破骨細胞分化において、CTLA4がFcRγを介してRANKLによる破骨細胞分化を直接抑制することを見出しており学術的意義がある。また今後のインプラントのゆるみ対策の一助となるなど、社会的意義もあると考えている。

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

    (18 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (8 results) (of which Invited: 1 results)

  • [Journal Article] Objective characterization of hip pain levels during walking by combining quantitative electroencephalography with machine learning2021

    • Author(s)
      Kimura A, Mitsukura Y, Oya A, Matsumoto M, Nakamura M, Kanaji A, Miyamoto T
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-82696-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Treatment with an active vitamin D analogue blocks hypothalamic dysfunction-induced bone loss in mice2021

    • Author(s)
      Ito E, Sato Y, Kobayashi T, Nakamura S, Kaneko Y, Soma T, Matsumoto T, Kimura A, Miyamoto K, Matsumoto H, Matsumoto M, Nakamura M, Sato K, Miyamoto T
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 542 Pages: 48-53

    • DOI

      10.1016/j.bbrc.2021.01.026

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Food restriction reduces cortical bone mass and serum insulin-like growth factor-1 levels and promotes uterine atrophy in mice2021

    • Author(s)
      Ito E, Sato Y, Kobayashi T, Nakamura S, Kaneko Y, Soma T, Matsumoto T, Kimura A, Miyamoto K, Matsumoto H, Matsumoto M, Nakamura M, Sato K, Miyamoto T
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 534 Pages: 165-171

    • DOI

      10.1016/j.bbrc.2020.11.122

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] ALDH2 mutation promotes skeletal muscle atrophy in mice via accumulation of oxidative stress2021

    • Author(s)
      Kobayashi H, Nakamura S, Sato Y, Kobayashi T, Miyamoto K, Oya A, Matsumoto M, Nakamura M, Kanaji A, Miyamoto T
    • Journal Title

      Bone

      Volume: 142 Pages: 115739-115739

    • DOI

      10.1016/j.bone.2020.115739

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Meningeal Melanocytoma Occurring at Epidural Region of the Cervical Spine2020

    • Author(s)
      Tateyama M, Fujimoto T, Nakamura T, Miyamoto T
    • Journal Title

      Spine Surgery and Related Research

      Volume: 4 Issue: 4 Pages: 377-379

    • DOI

      10.22603/ssrr.2020-0027

    • NAID

      130007930882

    • ISSN
      2432-261X
    • Year and Date
      2020-10-27
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Apolipoprotein AI amyloid deposits in the ligamentum flavum in patients with lumbar spinal canal stenosis2020

    • Author(s)
      Tasaki Masayoshi、Okada Masamitsu、Yanagisawa Akihiro、Nomura Toshiya、Matsushita Hiroaki、Ueda Akihiko、Inoue Yasuteru、Masuda Teruaki、Misumi Yohei、Yamashita Taro、Nakamura Takayuki、Miyamoto Takeshi、Obayashi Konen、Ando Yukio、Ueda Mitsuharu
    • Journal Title

      Amyloid

      Volume: 28 Issue: 2 Pages: 1-6

    • DOI

      10.1080/13506129.2020.1858404

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of Scx+/Sox9+ cells as potential progenitor cells for postnatal supraspinatus enthesis formation and healing after injury in mice2020

    • Author(s)
      Ideo K, Tokunaga T, Shukunami C, Takimoto A, Yoshimoto Y, Yonemitsu R, Karasugi T, Mizuta H, Hiraki Y, Miyamoto T
    • Journal Title

      PLoS One

      Volume: 15 Issue: 12 Pages: 1-14

    • DOI

      10.1371/journal.pone.0242286

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tooth extraction in mice administered zoledronate increases inflammatory cytokine levels and promotes osteonecrosis of the jaw2020

    • Author(s)
      Soma T, Iwasaki R, Sato Y, Kobayashi T, Nakamura S, Kaneko Y, Ito E, Okada H, Watanabe H, Miyamoto K, Matsumoto M, Nakamura M, Asoda S, Kawana H, Nakagawa T, Miyamoto T
    • Journal Title

      J Bone Miner Metab

      Volume: - Issue: 3 Pages: 372-384

    • DOI

      10.1007/s00774-020-01174-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Smoking cessation increases levels of osteocalcin and uncarboxylated osteocalcin in human sera2020

    • Author(s)
      Kiyota Y, Muramatsu H, Sato Y, Kobayashi T, Miyamoto K, Iwamoto T, Matsumoto M, Nakamura M, Tateno H, Sato K, Miyamoto T
    • Journal Title

      Sci Rep

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-73789-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vitamin D protects against immobilization-induced muscle atrophy via neural crest-derived cells in mice2020

    • Author(s)
      Nakamura S, Sato Y, Kobayashi T, Kaneko Y, Ito E, Soma T, Okada H, Miyamoto K, Oya A, Matsumoto M, Nakamura M, Kanaji A, Miyamoto T
    • Journal Title

      Sci Rep

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-69021-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 腰部脊柱管狭窄症患者の黄色靭帯・硬膜外脂肪に対するTransthyretinの影響2023

    • Author(s)
      前田和也、杉本一樹、中村孝幸、谷脇琢也、藤本徹、宮本健史
    • Organizer
      第52回日本脊椎脊髄病学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アミロイドーシス患者における腰椎固定術後経過の検討2023

    • Author(s)
      中村孝幸、立山 誠、谷脇琢也、藤本 徹、宮本健史
    • Organizer
      第52回日本脊椎脊髄病学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 腰部脊柱管狭窄症患者の黄色靭帯・硬膜外脂肪に対するTransthyretinの影響2023

    • Author(s)
      前田和也、宮本健史、藤本 徹、谷脇 琢也、中村 孝幸、杉本 一樹、立山 誠
    • Organizer
      第38回日本整形外科学会基礎学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 抗血小板薬が腰椎手術に与える影響の検討2022

    • Author(s)
      中村孝幸、杉本一樹、谷脇琢也、藤本徹、宮本健史
    • Organizer
      第51回日本脊椎脊髄病学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 頚椎症性筋萎縮症患者における術前針筋電図と術後麻痺改善の程度との関連についての検討2021

    • Author(s)
      中村孝幸、杉本一樹、谷脇琢也、藤本徹、宮本健史
    • Organizer
      第50回日本脊椎脊髄病学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 4歳Down症児の環軸椎亜脱臼に対して環椎後弓切除を行った一例2021

    • Author(s)
      高木寛、中村孝幸、呉屋亮太、杉本一樹、谷脇琢也、藤本徹、宮本健史
    • Organizer
      第141回西日本整形・災害外科学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 転移性脊椎腫瘍の治療経験2021

    • Author(s)
      富野航太、杉本一樹、中村孝幸、谷脇琢也、藤本徹、宮本健史
    • Organizer
      第142回西日本整形・災害外科学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 頚椎・頚胸椎移行部に発生した脊髄腫瘍における周術期合併症について2020

    • Author(s)
      藤本徹、谷脇琢也、中村孝幸、杉村一樹、宮本健史
    • Organizer
      第140回西日本整形・災害外科学会学術集会
    • Related Report
      2020 Research-status Report
    • Invited

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

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