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Role of plasma membrane tension in cell polarity

Research Project

Project/Area Number 16H04785
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Cell biology
Research InstitutionKobe University

Principal Investigator

Itoh Toshiki  神戸大学, バイオシグナル総合研究センター, 教授 (30313092)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Keywordsイノシトールリン脂質 / 細胞膜 / 細胞骨格 / 細胞運動 / がん / 細胞極性 / 細胞膜張力 / 細胞・組織 / 癌 / 脂質
Outline of Final Research Achievements

In this study, we focus on the membrane tension which is a physical parameter related to the cell membrane. We aim to elucidate the molecular mechanism of mechano-signaling that controls "cell polarity" which plays an essential role in cell morphogenesis and physiological functions. By monitoring the intracellular localizations of inositol phospholipids that regulate the actin cytoskeleton, we found a characteristic localization of these lipids associated with epithelial cell carcinogenesis. Specifically, PI (3,4,5) P3, a PI3-kinase product, increased remarkably on the basal side of the plasma membrane, while PI (4,5) P2 was distributed all around the cancer cell membrane that deviated from the apical surface. Our findings also suggest that the tumor suppressor gene PTEN may play a role in the invasive phenomenon associated with epithelial cell carcinogenesis.

Academic Significance and Societal Importance of the Research Achievements

癌細胞の浸潤、転移現象は悪性腫瘍の治癒を困難にする主要因となっている。本研究では、癌細胞の運動を司る機構として、細胞膜に係る物理的な張力に着目することでその理解を目指した。その結果、癌遺伝子の活性化に伴い細胞膜直下のアクチン細胞骨格を制御するイノシトールリン脂質の劇的な変化が起こること、その分布が癌細胞の移動と密接に関連していることが明らかになった。また、イノシトールリン脂質を制御する酵素活性を有するがん抑制遺伝子であるPTENの欠損実験から、これまで知られていない成果が得られた。これらの知見により、悪性腫瘍の浸潤、転移現象に対する従来にない対策につながることが期待される。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (12 results)

All 2019 2018 2017 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] SH3YL1 cooperates with ESCRT-I in the sorting and degradation of the EGF receptor2019

    • Author(s)
      Hasegawa Junya、Jebri Imen、Yamamoto Hikaru、Tsujita Kazuya、Tokuda Emi、Shibata Hideki、Maki Masatoshi、Itoh Toshiki
    • Journal Title

      Journal of Cell Science

      Volume: 132 Issue: 19 Pages: 229179-229179

    • DOI

      10.1242/jcs.229179

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An influenza-derived membrane tension-modulating peptide regulates cell movement and morphology via actin remodeling2019

    • Author(s)
      Masuda Toshihiro、Baba Kentarou、Nomura Takeshi、Tsujita Kazuya、Murayama Tomo、Itoh Toshiki、Takatani-Nakase Tomoka、Sokabe Masahiro、Inagaki Naoyuki、Futaki Shiroh
    • Journal Title

      Communications Biology

      Volume: 2 Issue: 1 Pages: 243-243

    • DOI

      10.1038/s42003-019-0486-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A curvature-dependent membrane binding by tyrosine kinase Fer involves an intrinsically disordered region.2018

    • Author(s)
      Yamamoto, H., Kondo, A., Itoh, T.
    • Journal Title

      Biochem. Biophys. Res. Commun.

      Volume: 495 Issue: 1 Pages: 1522-1527

    • DOI

      10.1016/j.bbrc.2017.12.009

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] メカノバイオロジー研究の新展開 ―"力"による生命現象制御の理解深化に向けて―2019

    • Author(s)
      辻田和也、伊藤俊樹
    • Organizer
      第92回日本生化学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] リン脂質結合タンパク質SH3YL1の機能解析2019

    • Author(s)
      伊藤俊樹、山本 光、ジェブリイメン
    • Organizer
      第60回日本組織細胞化学会総会・学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The Dynamic Changes in PI(4,5)P2 and PI(3,4,5)P3 are Required for the Elimination of RasG12V Transformed Cells by Cell Competition2019

    • Author(s)
      閻 露、伊藤俊樹
    • Organizer
      1.第42回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 細胞死におけるSH3YL1の機能解析2018

    • Author(s)
      伊藤俊樹、山本光
    • Organizer
      第70回日本細胞生物学会・第51回日本発生生物学会合同大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 細胞死におけるSH3YL1のミトコンドリア移行2018

    • Author(s)
      伊藤俊樹
    • Organizer
      第91回日本生化学会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Zドリフトコンペンセーターを用いた細胞膜辺縁部の動態観察2018

    • Author(s)
      伊藤俊樹
    • Organizer
      第59回日本組織細胞化学会総会・学術集会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 細胞膜変形タンパク質によるアクチン重合と細胞運動の制御2017

    • Author(s)
      伊藤俊樹
    • Organizer
      第122回日本解剖学会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Role of membrane-bending proteins and tyrosine kinase in cell migration2017

    • Author(s)
      伊藤俊樹
    • Organizer
      The 1st Biosignal Research Center International Symposium
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 神戸大学バイオシグナル総合研究センター 伊藤研究室

    • URL

      http://www.research.kobe-u.ac.jp/brce-itoh/papers.html

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

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