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Theory and experiment on directional accuracy in collective chemotaxis of eukaryotic cells

Research Project

Project/Area Number 16K17777
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biological physics/Chemical physics/Soft matter physics
Research InstitutionThe University of Tokyo

Principal Investigator

Hiraiwa Tetsuya  東京大学, 大学院理学系研究科(理学部), 助教 (20612154)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords生物物理 / アクティブマター / ソフトマター / 真核細胞の遊走 / 集団挙動 / モデリング / 実験との比較 / 数理シミュレーション / 細胞間コミュニケーション / 自己駆動体の理論 / 集団遊走 / 走化性 / 数値シミュレーション / 細胞遊走
Outline of Final Research Achievements

We constructed a mathematical model to investigate how populations of self-propelled elements, including cells migrating around on the substrate, behave with comparing the results with experimental observations. Furthermore, we apply this model to study spontaneously-emerging population behaviors of migrating cells and their responses to external stimuli. In particular, the study on the case with a kind of intercellular communications called contact inhibition of locomotion revealed that, when the cells are performing this communication, migration directions of the cells naturally aligns with each other, and that such cell population can much more accurately respond to external stimuli than when the cells are isolated each other. These results have been published in a peer-reviewed journal.
We also performed a migration assay of HL60 cells, and dynamic clusters have been observed. Computer simulations based on the above model have partially succeeded in reproducing it.

Academic Significance and Societal Importance of the Research Achievements

細胞間でコミュニケーションしながら遊走する真核細胞の集団挙動を、実験と比較しつつ調べるための理論モデリングのフレームワークが確立されました。さらに計画時の予想を超えた成果として、構築した理論の汎用さのため、モデルを適切に微調整することで社会性遊走細胞である細胞性粘菌やバクテリアの集団挙動も再現できる可能性が見えてきました。さらには細胞のみでなく、同じく自ら動き回る要素の集団とみなせる細胞骨格系の運動アッセイの結果にも適用できることもわかり、対応する実験グループとの共同研究も始まりました。このように本研究により、集団移動挙動について理論と実験を比較しつつ研究するための汎用的方法が確立されました。

Report

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

    (19 results)

All 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results)

  • [Int'l Joint Research] シンガポール国立大学メカノバイオロジー研究所(シンガポール)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Two types of exclusion interactions for self-propelled objects and collective motion induced by their combination2019

    • Author(s)
      Tetsuya Hiraiwa
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 1

    • DOI

      10.1103/physreve.99.012614

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Wave Propagation of Junctional Remodeling in Collective Cell Movement of Epithelial Tissue: Numerical Simulation Study2017

    • Author(s)
      Hiraiwa Tetsuya、Kuranaga Erina、Shibata Tatsuo
    • Journal Title

      Front Cell Dev Biol.

      Volume: 5 Pages: 1-15

    • DOI

      10.3389/fcell.2017.00066

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Numerical modeling and simulations for active behaviors of cells2019

    • Author(s)
      Tetsuya Hiraiwa
    • Organizer
      VISTEC ESE Seminar 2019 Special Lectures
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Collective cell movement driven by left-right asymmetric shrinkage of cell-cell junctions2018

    • Author(s)
      Tetsuya Hiraiwa
    • Organizer
      Universal Biology Institute-Mechanobiology Institute Joint Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory on chemotactic migration of eukaryotic cells2018

    • Author(s)
      Tetsuya Hiraiwa
    • Organizer
      Fundamental Problems in Active Matter
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory on chemotactic migration of eukaryotic cells2018

    • Author(s)
      平岩徹也
    • Organizer
      Active Matter Workshop 2018
    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Presentation] 真核細胞の走化性遊走の理論2018

    • Author(s)
      平岩徹也
    • Organizer
      日本物理学会 2018年次大会
    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Presentation] 互いに孤立した遊走細胞の集団の挙動2018

    • Author(s)
      平岩徹也
    • Organizer
      日本物理学会 2018秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Theory on collective behavior of migrating eukaryotic cells2018

    • Author(s)
      平岩徹也
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Theory on chemotactic migration of eukaryotic cells2018

    • Author(s)
      T. Hiraiwa
    • Organizer
      Fundamental Problems in Active Matter
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Motor-induced contraction of the actomyosin cytoskeleton2018

    • Author(s)
      T. Hiraiwa
    • Organizer
      International Symposium on Fluctuation and Structure out of Equilibrium 2017 (SFS2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 真核細胞のアクティブメカニクス2017

    • Author(s)
      平岩徹也
    • Organizer
      アクティブマター研究会
    • Place of Presentation
      九州大学西新プラザ(福岡県福岡市)
    • Year and Date
      2017-01-20
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Theory on chemotactic migration of eukaryotic cells2017

    • Author(s)
      T. Hiraiwa
    • Organizer
      Liquids 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Theory on chemotactic migration of eukaryotic cells2017

    • Author(s)
      平岩徹也
    • Organizer
      新学術ゆらぎと構造 第4回領域会議
    • Related Report
      2017 Research-status Report
  • [Presentation] 細胞骨格ネットワークにおけるモーター誘起応力の理論2017

    • Author(s)
      平岩徹也
    • Organizer
      新学術領域研究``ゆらぎと構造の協奏''A02班A03班合同研究会「アクティブマターの概念で繋ぐ生命機能の階層性」
    • Related Report
      2017 Research-status Report
  • [Presentation] Theory for chemotactic migration of eukaryotic cells2017

    • Author(s)
      平岩徹也
    • Organizer
      第 11 回物性領域横断研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] アクトミオシン細胞骨格のモーター誘起応力に関する理論2017

    • Author(s)
      平岩徹也
    • Organizer
      つくばソフトマター2017
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] アクトミオシン細胞骨格におけるモーター誘起応力の理論2017

    • Author(s)
      平岩徹也
    • Organizer
      第55回日本生物物理学会年会
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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