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Elucidation of anterior-posterior polarity creation mechanism of migrating cells using artificial cell manipulation

Research Project

Project/Area Number 17KT0110
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Constructive Systems Biology
Research InstitutionYamaguchi University

Principal Investigator

Iwadate Yoshiaki  山口大学, 大学院創成科学研究科, 准教授 (40298170)

Project Period (FY) 2017-07-18 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsアメーバ運動 / 細胞運動 / ミオシン / アクチン / メカノセンシング / 細胞遊走 / ケラトサイト / ストレスファイバ
Outline of Final Research Achievements

Keratocytes migrate while maintaining their shape with a vast crescent-shaped lamellipodium in front of the spindle-shaped cell body. In a migrating keratocyte, stress fibers, which are bundles of actomyosin, are always arranged perpendicular to the migration direction of the cell. In this study, we investigated the mechanism by which cells sense mechanical stimuli such as the rigidity of substrate and generate the anterior-posterior polarity of cells by the function of actomyosin. Artificial destruction of the stress fibers in keratocytes resulted in unstable anterior-posterior polarity of the cells. In addition, when Amoeba proteus cells, which are completely different from keratocytes, are dispersed on an elastic substrate and the elastic substrate is repeatedly stretched in order to give a mechanical stimulus from the substrate, the cells retract the pseudopodia and has anterior-posterior polarity in the direction perpendicular to the stretch.

Academic Significance and Societal Importance of the Research Achievements

オオアメーバが繰り返し基質伸展に応答して前後極性を形成したことから、外部からの機械的刺激に応答して前後極性を形成させるメカニズムは、ケラトサイトにとどまらない普遍的な前後極性形成メカニズムであることがわかった。さらに、オオアメーバが外部からの機械的な刺激に対して前後極性を形成させる時に、ストレスファイバ(アクトミオシン)の自律的形成がどのように起きるか検討している。本研究をさらに発展させれば、化学的な試薬を用いない非侵襲な方法で、細胞の移動方向の制御が可能になる。これはがん転移の制御や、傷跡の残らない傷修復など新しい医療応用に発展する可能性を持つ。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (19 results)

All 2020 2019 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (13 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Actin-binding domains mediate the distinct distribution of two Dictyostelium Talins through different affinities to specific subsets of actin filaments during directed cell migration2019

    • Author(s)
      Tsujioka, M., Uyeda, T.Q.P., Iwadate, Y., Patel, H., Shibata, K., Yumoto, T. and Yonemura, S.
    • Journal Title

      PloS one

      Volume: 14 Issue: 4 Pages: e0214736-e0214736

    • DOI

      10.1371/journal.pone.0214736

    • NAID

      120006812012

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stress-Fiber Wheel Rotation in Keratocytes2019

    • Author(s)
      沖村千夏,谷口篤史,野中茂紀,岩楯好昭
    • Journal Title

      Seibutsu Butsuri

      Volume: 59 Issue: 2 Pages: 094-096

    • DOI

      10.2142/biophys.59.094

    • NAID

      130007620405

    • ISSN
      0582-4052, 1347-4219
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rotation of stress fibers as a single wheel in migrating fish keratocytes2018

    • Author(s)
      Okimura, C., Taniguchi, A., Nonaka, S. and Iwadate, Y.
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 10615-10615

    • DOI

      10.1038/s41598-018-28875-z

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sensing of substratum rigidity and directional migration by fast-crawling cells.2018

    • Author(s)
      Okimura, C., Sakumura, Y., Shimabukuro, K. and Iwadate, Y.
    • Journal Title

      Physical Review E

      Volume: 97 Issue: 5 Pages: 052401-052401

    • DOI

      10.1103/physreve.97.052401

    • NAID

      120006537398

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Directional cell migration in response to repeated substratum stretching2017

    • Author(s)
      Okimura C. and Iwadate Y.
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 10 Pages: 101002-101002

    • DOI

      10.7566/jpsj.86.101002

    • NAID

      210000134518

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Rigidity sensing for directional migration in fast crawling cell2020

    • Author(s)
      Iwadate Y.
    • Organizer
      Active Matter Workshop 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 魚類表皮ケラトサイトのストレスファイバの回転に伴う核と細胞膜の運動2020

    • Author(s)
      沖村千夏、岩楯好昭
    • Organizer
      生体運動合同班会議
    • Related Report
      2019 Research-status Report
  • [Presentation] エレポマシン雷神(ハンディエレクトロポレーター)2019

    • Author(s)
      岩楯好昭
    • Organizer
      イノベーションジャパン2019 -大学見本市-
    • Related Report
      2019 Research-status Report
  • [Presentation] Movement of inner nucleus and outer cell membrane of a rotating stress fiber-wheel in a migrating keratocyte2019

    • Author(s)
      Okimura C. and Iwadate Y.
    • Organizer
      第57回生物物理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] アメーバ運動する線虫精子の牽引力測定2019

    • Author(s)
      ジャニサ、吉村翠、江本光、沖村千夏、岩楯好昭 、島袋勝弥
    • Organizer
      生体運動合同班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] ゾウリムシ表層シート繊毛の頭から広がるメタクロナールウェーブ2019

    • Author(s)
      中尾 元、沖村千夏、堀 学、岩楯好昭
    • Organizer
      生体運動合同班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 速いアメーバ細胞の Rigidity Sensing2019

    • Author(s)
      沖村千夏、作村諭一、島袋勝弥、岩楯好昭
    • Organizer
      生体運動合同班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 魚類ケラトサイトの遊走メカニズムに微小管は必要ない2018

    • Author(s)
      中嶋仁珠、沖村千夏、岩楯好昭
    • Organizer
      生物物理学会第56回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 細胞性粘菌や好中球の基質の硬さ感知2018

    • Author(s)
      沖村千夏、作村諭一、島袋勝弥、岩楯好昭
    • Organizer
      生物物理学会第56回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 魚類ケラトサイトのストレスファイバの車輪2018

    • Author(s)
      沖村 千夏、 谷口 篤史、野中 茂紀、 岩楯 好昭
    • Organizer
      生体運動合同班会議
    • Related Report
      2017 Research-status Report
  • [Presentation] 魚類表皮の遊走細胞ケラトサイトの車輪2017

    • Author(s)
      沖村千夏、谷口篤史、野中茂紀、岩楯好昭
    • Organizer
      第69回日本細胞生物学会大会シンポジウム「先端イメージングが解き明かす新しい細胞像」
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A wheel for migration in fish keratocyte2017

    • Author(s)
      沖村 千夏、 谷口 篤史、野中 茂紀、 岩楯 好昭
    • Organizer
      生物物理学会第55回年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Sources of metachronal wave in Paramecium cilia2017

    • Author(s)
      日俣直彦、沖村千夏、堀学、岩楯好昭
    • Organizer
      生物物理学会第55回年会
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] エレクトロポレーション用電極付きキュベット2020

    • Inventor(s)
      山本朋彦、岩楯好 昭、沖村千夏、継山 晴進、二階堂正隆、清木信行
    • Industrial Property Rights Holder
      株式会社ヤマガタプラスチック、山口大学
    • Industrial Property Rights Type
      意匠
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report

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Published: 2017-07-21   Modified: 2022-12-28  

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