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Establishment of intravital imaging for enchondral ossification

Research Project

Project/Area Number 20K09479
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Kaito Takashi  大阪大学, 大学院医学系研究科, 特任准教授 (70623982)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords骨再生 / 骨芽細胞 / 軟骨細胞 / 生体内イメージング / in vivo / imaging / chondrocyte / osteoblast / bone / trans differentiation / bone regeneration / 内軟骨骨化 / 成長軟骨 / 骨折モデル / 異所性骨化モデル / transdifferentiation / 骨折 / 異所性骨化 / 内軟骨性骨化 / 肥大軟骨細胞
Outline of Research at the Start

体の骨の大部分は、まず軟骨組織形成された後に軟骨が骨に置換されるといる内軟骨性骨化によって作られる。以前は先に形成された軟骨組織は完全に吸収され消失した後に新たに骨を作る細胞が誘導され骨が形成されると考えられていたが、近年の研究結果により軟骨を形成する軟骨細胞の一部が骨を形成する細胞に変化することが明らかになった。しかしこの過程を生体内で動的に観察した報告はない。本研究の目的は、2 光子励起顕微鏡を用いて内軟骨性骨化の過程を生体内で可視化し、軟骨由来の骨形成細胞と軟骨を経ない骨形成細胞の機能的・形態的違いを明らかにすること、各種薬剤介入による内軟骨性骨化の最適化手法を検討することである。

Outline of Final Research Achievements

In the healing and regeneration of bones, observing the process of bone formation is of great significance for maximizing therapeutic effects. Previously, we established a method for in vivo imaging of BMP-induced ectopic ossification process by visualizing osteoblasts, blood vessels, and newly formed bone over time. However, to elucidate the process of endochondral ossification, which is a major part of bone formation, visualization of cartilage was deemed necessary. Therefore, we created double-labeled transgenic mice with typeX collagen labeled in red and type I collagen labeled in green, and successfully observed chondrocytes and osteoblasts simultaneously in vivo. This research outcome suggests that by optimizing both cartilage formation and bone formation, efficient bone regeneration can be achieved.

Academic Significance and Societal Importance of the Research Achievements

広範囲骨欠損の治療や脊椎固定術において、骨癒合の獲得は患者QOLの向上に欠かせない。骨芽細胞による骨形成が起こる前段階として軟骨細胞による軟骨形成が生じ、その軟骨を足場として骨形成が行われる。我々は軟骨による足場形成を合わせた評価系として、骨形成過程における軟骨細胞と骨芽細胞の両者を同時に生体内で可視化する遺伝子改変動物モデルを作製した。骨癒合・骨再生過程において、両者を可視化する系が確立されたことは、骨形成の最適化を可能とし、今後の研究の進展により難治性広範囲骨欠損の治療法や、脊椎固定における早期骨癒合獲得法の開発につながる点で意義が大きい。

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

    (22 results)

All 2024 2023 2022 2021 2020

All Journal Article (7 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (15 results) (of which Int'l Joint Research: 3 results,  Invited: 12 results)

  • [Journal Article] Advances in bone regeneration with growth factors for spinal fusion: A literature review2023

    • Author(s)
      Tateiwa D, Kaito T
    • Journal Title

      N Am Spine Soc J

      Volume: 13 Pages: 100193-100193

    • DOI

      10.1016/j.xnsj.2022.100193

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 特集 PLIF・TLIF-手術手技の原点とエキスパートの工夫 自家骨を超える骨移植材料-近未来の脊椎固定術2022

    • Author(s)
      海渡貴司
    • Journal Title

      脊椎脊髄ジャーナル

      Volume: 35 Issue: 7 Pages: 503-507

    • DOI

      10.11477/mf.5002201885

    • ISSN
      0914-4412
    • Year and Date
      2022-12-23
    • Related Report
      2022 Research-status Report
  • [Journal Article] Effect of rhBMP-2-loaded hydroxyapatite granules/beta-tricalcium phosphate hydrogel (HA-b-TCP/hydrogel) composite on a rat model of caudal intervertebral fusion.2022

    • Author(s)
      Nakagawa S, Okada R, Kushioka J, Kodama J, Tsukazaki H, Bal Z, Tateiwa D, Ukon Y, Hirai H, Makino T, Takenaka S, Okada S, Kaito T.
    • Journal Title

      Sci Rep

      Volume: 12 Issue: 1 Pages: 7906-7906

    • DOI

      10.1038/s41598-022-12082-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-Siglec-15 antibody suppresses bone resorption by inhibiting osteoclast multinucleation without attenuating bone formation2021

    • Author(s)
      Tsukazaki Hiroyuki、Kikuta Junichi、Ao Tomoka、Morimoto Akito、Fukuda Chie、Tsuda Eisuke、Minoshima Masafumi、Kikuchi Kazuya、Kaito Takashi、Ishii Masaru
    • Journal Title

      Bone

      Volume: 152 Pages: 116095-116095

    • DOI

      10.1016/j.bone.2021.116095

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 痛みの機序 骨由来の痛みを引き起こす病態の可視化2021

    • Author(s)
      塚崎 裕之, 石井 優, 海渡 貴司
    • Journal Title

      医学のあゆみ

      Volume: 278(1) Pages: 21-27

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] In vivo dynamic analysis of BMP-2-induced ectopic bone formation.2020

    • Author(s)
      Hashimoto K, Kaito T, Furuya M, Seno S, Okuzaki D, Kikuta J, Tsukazaki H, Matsuda H, Yoshikawa H, Ishii M.
    • Journal Title

      Sci Rep.

      Volume: 10 Issue: 1 Pages: 4751-4751

    • DOI

      10.1038/s41598-020-61825-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intravital imaging of orthotopic and ectopic bone2020

    • Author(s)
      Hashimoto Kunihiko、Kaito Takashi、Kikuta Junichi、Ishii Masaru
    • Journal Title

      Inflammation and Regeneration

      Volume: 40 Issue: 1 Pages: 26-26

    • DOI

      10.1186/s41232-020-00135-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] How will biotechnology change the future spinal fusion surgery?2024

    • Author(s)
      海渡貴司
    • Organizer
      第53回日本脊椎脊髄病学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 最新の骨再生技術がもたらす脊椎固定術の「変化」2023

    • Author(s)
      海渡貴司
    • Organizer
      第52回日本脊椎脊髄病学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 脊椎外科領域での骨組織再生の現状と近未来の展望2022

    • Author(s)
      海渡貴司
    • Organizer
      第51回日本脊椎脊髄病学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 脊椎で骨をつくる-科学に基づく手術手技と生物学的骨癒合促進剤が変える近未来の固定術-2022

    • Author(s)
      海渡貴司
    • Organizer
      第7回 四国脊椎外科研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Selective Retinoic Acid Receptor γ Antagonists enhances BMP-induced Endochondral Bone Formation2022

    • Author(s)
      Takashi Kaito, Daisuke Tateiwa, Satoru Otsuru, Masahiro Iwamoto
    • Organizer
      ABJS annual meeting
    • Related Report
      2022 Research-status Report
  • [Presentation] Effects of a novel BMP-2 sustained release biomaterial (NOVOSIS Putty) for spinal fusion2022

    • Author(s)
      Takashi Kaito
    • Organizer
      AOSpine Asia Pacific East Asia Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] BMP signaling pathway and its implication on bone regeneration2022

    • Author(s)
      Takashi Kaito
    • Organizer
      The 13th ASIA SPINE, A Joint Meeting with the 36th Annual Meeting of the KSNS Neurospine Session
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 次世代の骨組織工学 ー骨軟骨の形成促進・抑制による疾患治療ー2022

    • Author(s)
      海渡貴司
    • Organizer
      第4回御茶ノ水脊椎研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 骨組織再生への情熱 -1ヵ月での脊椎骨癒合を目指して-2022

    • Author(s)
      海渡貴司
    • Organizer
      第37回ちば脊椎カンファレンス
    • Related Report
      2021 Research-status Report
  • [Presentation] 閉経後骨粗鬆症がBMP誘導骨形成に及ぼす影響2021

    • Author(s)
      塚崎 裕之, 海渡 貴司, 橋本 国彦, 石井 優
    • Organizer
      第50回日本脊椎脊髄病学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 新規徐放性BMP-2製剤の開発 -脊椎固定術における本邦承認を目指して-2021

    • Author(s)
      海渡貴司
    • Organizer
      第36回日本整形外科基礎学術集会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Biological enhancement of Spinal fusion2021

    • Author(s)
      Takashi Kaito
    • Organizer
      Eurasian Orthopedic Forum
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 骨形成biologics時代の到来にどう備えるか?2020

    • Author(s)
      海渡貴司
    • Organizer
      第49回日本脊椎脊髄病学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 脊柱機能再建におけるtreat-to-target 脊柱バランスと生体機能バランス2020

    • Author(s)
      海渡貴司
    • Organizer
      第93回日本整形外科学会学術総会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] How to manage bone union in spine fusion surgery2020

    • Author(s)
      Takashi Kaito
    • Organizer
      European Orthopaedic Research Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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

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