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Molecular mechanisms of cellular mechanosensing through Rho-GEF Solo

Research Project

Project/Area Number 17K15118
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Cell biology
Research InstitutionOsaka University

Principal Investigator

Fujiwara Sachiko  大阪大学, 基礎工学研究科, 特別研究員(PD) (40771879)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
KeywordsRhoファミリー活性化因子 / メカノセンシング / 細胞骨格 / 中間径フィラメント / 細胞-基質間接着 / 細胞収縮力 / 細胞-基質間接着 / 上皮細胞 / シグナル伝達 / 蛋白質
Outline of Final Research Achievements

Cells sense and respond to their mechanical environment (mechanosensing), which can regulate the various physiological functions of the cells and the tissues. This study focused on the cell signaling pathway of Rho family GTPases and analyzed the involvement of Solo, a Rho family GTPases exchange factor, in mechanosensing. We elucidate the molecular mechanisms of the interaction of Solo and keratin intermediate filaments and showed their importance in mechanosensing and in the force generation in cells. This study revealed a novel mechanism and the physiological roles of cellular mechanosensing.

Academic Significance and Societal Importance of the Research Achievements

生体を形成、維持する過程において、力学的環境に対する細胞や組織の応答(メカノセンシング)は必須の役割を果たしている。本研究では細胞内Rhoファミリーシグナル伝達経路と細胞骨格のケラチン中間径フィラメントに着目し、メカノセンシングの新たな分子機構と生理的役割を解明した。本研究成果は、メカノセンシングの破綻により引き起こされる疾患のメカニズムを理解するための新規な基礎的知見を得たものである。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (15 results)

All 2019 2018 2017 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Keratin-binding ability of the N-terminal Solo domain of Solo is critical for its function in cellular mechanotransduction2019

    • Author(s)
      Fujiwara, S., Matsui, T. S., Ohashi, K., Mizuno, K., and Deguchi, S.
    • Journal Title

      Genes Cells

      Volume: 印刷中 Issue: 5 Pages: 390-402

    • DOI

      10.1111/gtc.12682

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solo, a RhoA-targeting guanine nucleotide exchange factor, is critical for hemidesmosome formation and acinar development in epithelial cells2018

    • Author(s)
      Sachiko Fujiwara, Tsubasa S. Matsui, Kazumasa Ohashi, Shinji Deguchi, and Kensaku Mizuno
    • Journal Title

      PLOS ONE

      Volume: 印刷中 Issue: 4 Pages: e0195124-e0195124

    • DOI

      10.1371/journal.pone.0195124

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of Intermediate Filaments in Cell Locomotion2017

    • Author(s)
      Sachiko Fujiwara and Kensaku Mizuno
    • Journal Title

      eLS. John Wiley & Sons, Ltd: Chichester.

      Volume: - Pages: 1-9

    • DOI

      10.1002/9780470015902.a0026365

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Rho-signaling plays crucial roles for cellular mechanotransduction and regulates actin and intermediate filament cytoskeletal reorganization2018

    • Author(s)
      Sachiko Fujiwara, Hiyori Abiko, Tsubasa S. Matsui, Kazumasa Ohashi, Kensaku Mizuno, Shinji Deguchi
    • Organizer
      2018 World Congress of Biomechanics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hemidesmosomal cell-substrate adhesion and acinar morphogenesis of epithelial cells are organized by Rho-signaling through controlling mechanotransduction2018

    • Author(s)
      Sachiko Fujiwara, Hiyori Abiko, Tsubasa S. Matsui, Kazumasa Ohashi, Kensaku Mizuno, Shinji Deguchi
    • Organizer
      2018 World Congress of Biomechanics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rho-signaling organizes hemidesmosomal cell-substrate adhesion and acinar morphogenesis of epithelial cells through controlling mechanotransduction2018

    • Author(s)
      Sachiko Fujiwara, Tsubasa S. Matsui, Kazumasa Ohashi, Thomas M. Magin, Kensaku Mizuno, Shinji Deguchi
    • Organizer
      DGZ 2018 (International Meeting of the German Society for Cell Biology)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RhoA-GEFのSoloは上皮細胞集団移動の速度を制御する2018

    • Author(s)
      磯崎友亮、藤原佐知子、水野健作、大橋一正
    • Organizer
      第91回日本生化学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Solo (ARHGEF40)はケラチン8/18ネットワークの再構築に関与し細胞集団移動の速度を制御する2018

    • Author(s)
      磯崎友亮、酒井高輝、藤原佐知子、水野健作、大橋一正
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Physiological roles of Rho-GEF Solo in mechanotransduction and hemidesmosomal cell-substrate adhesion in epithelial cells2018

    • Author(s)
      藤原佐知子、松井翼、大橋一正、Thomas Magin、水野健作、出口真次
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 細胞収縮力の発生と上皮腺房形成における細胞内Rhoシグナルの制御機構と生理機能2018

    • Author(s)
      藤原佐知子、松井翼、大橋一正、Thomas Magin、水野健作、出口真次
    • Organizer
      日本機械学会 第31回バイオエンジニアリング講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 力覚応答に関与するRhoGEF, Solo の上皮細胞の集団移動における機能解析2017

    • Author(s)
      磯崎友亮、藤原佐知子、水野健作、大橋一正
    • Organizer
      第83回日本生化学会東北支部回例会
    • Related Report
      2017 Research-status Report
  • [Presentation] 上皮細胞の細胞-基質間接着と腺房形成におけるRho-GEF Soloの機能2017

    • Author(s)
      藤原佐知子、勝野真美、大橋一正、水野健作
    • Organizer
      第69回日本細胞生物学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] SoloはミオシンIIを介して上皮管腔の形態を制御する2017

    • Author(s)
      西村亮祐、加藤輝、藤原佐知子、大橋一正、水野健作
    • Organizer
      第69回日本細胞生物学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Rho-GEF Soloは細胞-基質間接着における力覚応答に関与し上皮腺房形成を制御する2017

    • Author(s)
      藤原佐知子、松井翼、出口真次、水野健作
    • Organizer
      2017年度 生命科学系学会合同年次大会
    • Related Report
      2017 Research-status Report
  • [Remarks] 大阪大学大学院基礎工学研究科 出口研究室ホームページ

    • URL

      http://mbm.me.es.osaka-u.ac.jp

    • Related Report
      2018 Annual Research Report 2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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