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Elucidation of scaffold-dependent pulmonary growth mechanisms in osteosarcoma and their application to therapy for inhibiting pulmonary metastasis

Research Project

Project/Area Number 21K09290
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research Institution医療法人徳洲会野崎徳洲会病院(附属研究所)

Principal Investigator

Yui Yoshihiro  医療法人徳洲会野崎徳洲会病院(附属研究所), 研究所, 主任研究員 (20547757)

Project Period (FY) 2021-04-01 – 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 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords骨肉腫 / 肺転移 / CRISPR活性化スクリーニング / RNA-seq解析 / 機械的シグナル伝達
Outline of Research at the Start

本研究では、転移先臓器の腫瘍外環境の軟らかさという工学的性質と腫瘍増殖の関係性に焦点を当て、新規の治療標的分子を探索する。肺の軟らかく足場の乏しい環境での足場依存的増殖メカニズムから導き出された治療標的分子は、転移を特異的に抑える分子標的薬の開発など新規の治療法開発の足掛かりとなる。また、本研究の成果は、肺線維化抑制療法と組み合わせを検討することで、より効果的な肺転移抑制療法の礎となる。

Outline of Final Research Achievements

The 5-year survival rate of osteosarcoma has not shown significant improvement over the past 30 years, and the establishment of novel therapeutic strategies to suppress pulmonary metastasis, the primary cause of mortality, is desired. In this study, we attempted to elucidate scaffold-dependent, mechanically insensitive growth mechanisms of osteosarcoma cells in environments poor in collagen fibers, where they serve as soft scaffolds, using in vivo CRISPR activation screening and in vitro RNA-seq analysis. RNA-seq analysis revealed increased expression of multiple Cdc42GEFs and decreased expression of multiple Cdc42GAPs in highly metastatic LM8 cells. Furthermore, it was found that ribosome activity is enhanced in soft environments. CRISPR activation screening also confirmed amplification of ribosome-related gene clusters in metastatic osteosarcoma cells.

Academic Significance and Societal Importance of the Research Achievements

本研究は、骨肉腫の肺転移メカニズムに対する工学的な新規のアプローチである。この研究によりリボソーム活性やCdc42活性が、“足場の乏しい軟らかい環境”での骨肉腫細胞の増殖を促進し、肺転移を増加させるメカニズムを明らかになれば、肺組織の軟らかさに対応した増殖メカニズムという新たな治療標的を発見し、骨肉腫肺転移の抑制療法を開発することができる。

Report

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

    (7 results)

All 2024 2023 2022 2021 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (2 results) Remarks (1 results)

  • [Journal Article] Mechanosensitive hormone signaling promotes mammary progenitor expansion and breast cancer risk2024

    • Author(s)
      Northey Jason J.、Hayward Mary-Kate、Yui Yoshihiro、Stashko Connor、Kai FuiBoon、Mouw Janna K.、Thakar Dhruv、Lakins Jonathon N.、Ironside Alastair J.、Samson Susan、Mukhtar Rita A.、Hwang E. Shelley、Weaver Valerie M.
    • Journal Title

      Cell Stem Cell

      Volume: 31 Issue: 1 Pages: 106-126.e13

    • DOI

      10.1016/j.stem.2023.12.002

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic characterization of a novel organoid from human malignant giant-cell tumor2023

    • Author(s)
      Suzuki Rie、Wakamatsu Toru、Yoshida Keiichi、Matsuoka Yukiko、Takami Haruna、Nakai Sho、Tamiya Hironari、Kakunaga Shigeki、Yagi Toshinari、Yoshida Ken-ichi、Imura Yoshinori、Yui Yoshihiro、Sasagawa Satoru、Takenaka Satoshi
    • Journal Title

      Journal of Bone Oncology

      Volume: 41 Pages: 100486-100486

    • DOI

      10.1016/j.jbo.2023.100486

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Establishment of organoids from human epithelioid sarcoma with the air-liquid interface organoid cultures.2022

    • Author(s)
      Wakamatsu T, Ogawa H, Yoshida K, Matsuoka Y, Shizuma K, Imura Y, Tamiya H, Nakai S, Yagi T, Nagata S, Yui Y, Sasagawa S, Takenaka S
    • Journal Title

      Front. Oncol.

      Volume: 12 Pages: 893592-893592

    • DOI

      10.3389/fonc.2022.893592

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lung fibrosis is a novel therapeutic target to suppress lung metastasis of osteosarcoma2022

    • Author(s)
      Yui Yoshihiro、Kumai Jun、Watanabe Kenta、Wakamatsu Toru、Sasagawa Satoru
    • Journal Title

      International Journal of Cancer

      Volume: - Issue: 5 Pages: 739-751

    • DOI

      10.1002/ijc.34008

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 肺線維化は骨肉腫肺転移の治療標的になりうる2022

    • Author(s)
      Yoshihiro Yui, Toru Wakamatsu, Satoru Sasagawa
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 線維化抑制剤による骨肉腫の肺転移抑制の可能性2021

    • Author(s)
      Yui Yoshihiro、Kumai Jun、Watanabe Kenta、Wakamatsu Toru、Sasagawa Satoru
    • Organizer
      第30回日本がん転移学会学術集会・総会
    • Related Report
      2021 Research-status Report
  • [Remarks] 野崎徳洲会病院附属研究所

    • URL

      https://nozaki.tokushukai.or.jp/rint/

    • Related Report
      2023 Annual Research Report 2021 Research-status Report

URL: 

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

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