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Investigation of cellular curvature recognition and response mechanism based on cellular traction force measurement

Research Project

Project/Area Number 21K18041
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionKeio University

Principal Investigator

Yamashita Tadahiro  慶應義塾大学, 理工学部(矢上), 准教授 (00827339)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords血管平滑筋細胞 / 曲率 / 表現型 / メカノバイオロジー
Outline of Research at the Start

近年、従来細胞の挙動に影響を与えることがないと見做されてきた直径数百μm以上の曲面上で、様々な細胞が平面と異なる振る舞いを示すことが報告されてきたが、その分子機構は不明である。申請者は「細胞の自律的な張力が細胞内小器官に及ぼす力が、培養面曲率に依存した細胞の挙動を生み出す」という仮説の下、曲面上で細胞張力を測定可能な新しい計測技術を開発し、「細胞張力ー細胞の曲率依存的な挙動ー各種細胞内シグナルの増減」の相関を精査することで、細胞が曲面を認識する仕組みを明らかにすることを目指す。

Outline of Final Research Achievements

We developed a new measurement technique of cellular traction force applied onto the cell adhering surface with a curvature of several hundred microns. We then investigated the influence of the substrate curvature onto the collective cellular deformation and phenotype change. The substrate curvature at several hundred microns did not have a considerable impact on the cellular traction force. On the other hand, such substrate curvature significantly changed the expression levels of cellular phenotype marker including alpha Smooth muscle actin. These findings will be of importance in designing scaffold material with curvatures that aim to control cellular complex behaviours in tissue engineering in the future.

Academic Significance and Societal Importance of the Research Achievements

本研究成果により、これまでに細胞の振る舞いに影響を与えることがないと考えられてきた培養面のわずかな曲率が、細胞の集団的な変形や表現型の変化に強い影響を与えることが明らかになった。凹状曲面上で細胞の変形挙動がシンプルな力学に従って剥離・凝集挙動を示す一方で、凸状曲面上に存在する細胞は細胞内小器官の変形をきっかけにその表現型を変えることを示唆する結果が得られた。本研究を通じて得られた成果は、組織工学や再生医療において、複雑な形状の足場を製作し、細胞の振る舞いを望み通りに誘導するための基盤的な知見となることが期待される。

Report

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

    (11 results)

All 2023 2022 2021 Other

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

  • [Int'l Joint Research] Heinrich Heine University Duesseldorf(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Multicellular dynamics on structured surfaces: Stress concentration is a key to controlling complex microtissue morphology on engineered scaffolds2023

    • Author(s)
      Matsuzawa Ryosuke、Matsuo Akira、Fukamachi Shuya、Shimada Sho、Takeuchi Midori、Nishina Takuya、Kollmannsberger Philip、Sudo Ryo、Okuda Satoru、Yamashita Tadahiro
    • Journal Title

      Acta Biomaterialia

      Volume: 166 Pages: 301-316

    • DOI

      10.1016/j.actbio.2023.05.012

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Semantic segmentation using deep convolutional neural network towards trajectory tracking in dense cell population2023

    • Author(s)
      Nobuyuki Tanaka, Nobuko Fujita, Tadahiro Yamashita, Koichi Takahashi
    • Organizer
      6th Japan-Switzerland Workshop on Biomechanics (JSB2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Particle-based cellular model to simulate microtissue deformation on structured surfaces2023

    • Author(s)
      Tadahiro Yamashita, Ryosuke Matsuzawa, Akira Matsuo, Shuya Fukamachi, Sho Shimada, Midori Takeuchi, Takuya Nishina, Philip Kollmannsberger, Ryo Sudo, Satoru Okuda
    • Organizer
      6th Japan-Switzerland Workshop on Biomechanics (JSB2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Particle-based modelling approach to understanding the detaching mechanism of microtissue from structured surfaces2022

    • Author(s)
      Ryosuke Matsuzawa, Akira Matsuo, Shuya Fukamachi, Midori Takeuchi, Takuya Nishina, Philip Kollmannsburger, Ryo Sudo, Satoru Okuda, Tadahiro Yamashita
    • Organizer
      CurvoBio 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] マイクロ構造体上での組織変形を記述する粒子ベース力学モデルの開発2022

    • Author(s)
      山下忠紘, 松澤 諒介, 松尾 瑛, 深町 崇耶, Philip Kollmannsberger, 須藤 亮, 奥田 覚
    • Organizer
      化学とマイクロ・ナノシステム学会 第46回研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Modelling multicellular dynamics for versatile prediction of microtissue morphology formed on 3D engineered scaffolds2022

    • Author(s)
      Tadahiro Yamashita
    • Organizer
      Mechano-X BIO&CHEM
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 曲面上での血管平滑筋細胞の振る舞いを解析するマイクロデバイスの開発2021

    • Author(s)
      山下忠紘
    • Organizer
      日本機械学会 第33回バイオエンジニアリング講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 曲面培養面上の細胞張力計測手法の開発2021

    • Author(s)
      竹内翠, 須藤 亮, 山下 忠紘
    • Organizer
      日本機械学会 第32回 バイオフロンティア講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 接着面の曲率が血管平滑筋細胞の表現型に及ぼす影響の調査2021

    • Author(s)
      仁科 拓哉, 鈴木 駿太, 須藤 亮, 山下 忠紘
    • Organizer
      日本機械学会 第32回 バイオフロンティア講演会
    • Related Report
      2021 Research-status Report
  • [Book] Material-based Mechanobiology, Chapter 10 Curvature Mechanobiology2022

    • Author(s)
      Ryosuke Matsuzawa, Midori Takeuchi, Takuya Nishina, Tadahiro Yamashita
    • Total Pages
      26
    • Publisher
      The Royal Society of Chemistry
    • ISBN
      9781839161858
    • Related Report
      2022 Research-status Report

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

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