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細胞外力学環境の微細設計と細胞のメカノタクシス制御のナノバイオメカニクス研究

Research Project

Project/Area Number 17680038
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biological material science
Research InstitutionKyushu University

Principal Investigator

木戸秋 悟  Kyushu University, 先導物質化学研究所, 教授 (10336018)

Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥26,910,000 (Direct Cost: ¥20,700,000、Indirect Cost: ¥6,210,000)
Fiscal Year 2007: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2006: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2005: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Keywords細胞メカノタクシス / バイオメカニクス / マイクロ弾性勾配ゲル / 細胞メカノタキシス
Research Abstract

本研究課題では,精密設計された細胞外環境下での細胞のメカノタキシス挙動を、超微弱光検出顕微分光・蛍光・原子間力顕微鏡法を用いて解析することで、「細胞」・「人工基材」・「細胞-人工基材間相互作用」のナノバイオメカニクスの定量的理解の拡充を図り、細胞外力学環境の微細設計とそれによる細胞行動の制御の間の相関を系統的に調べる.メカノタキシス(mechanotaxis)は細胞が周囲組織のより硬い領域を指向して移動する性質(機械的走性)であり,細胞増殖因子等の生化学分子の濃度勾配感受性のハプトタキシス(haptotaxis)とともに,細胞運動制御の方法の一つとして近年注目されつつある.第三年次である今年度は、昨年度までに確立したメカノタクシス高効率誘導マイクロ弾性勾配ゲル(MEGゲル)の作製技術を応用して、細胞運動の長距離一方向整流マトリックスの開発を検討した。マイクロ弾性パターニング用の縮小投影パルス光照射式フォトクラフィーシステムを新たに設計し、弾性率勾配の変化が鋸型の非対称な周期的パターンを示すゲルマトリックスの作製を検討した。その結果、ファイマンラチェット型弾性勾配場の作製に成功した。このような非対称弾性勾配場の細胞運動の整流への有効性を示す基礎データが得られ、細胞の運動性の差を利用した細胞クロマトグラフィーの設計の基礎指針を確立することができた。実際に、異なる細胞の共培養系での細胞分離条件の評価への応用を開始できた。

Report

(3 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (16 results)

All 2007 2006 2005 Other

All Journal Article (14 results) (of which Peer Reviewed: 3 results) Presentation (2 results)

  • [Journal Article] Microelastic gradient gelatinous gels to induce cellular mechanotaxis2007

    • Author(s)
      S, Kidoaki・T, Matsuda
    • Journal Title

      Journal of Biotechnology 133

      Pages: 225-230

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shape-engineered fibroblasts: cell elasticity and actin cytoskeletal features characterized by fluorescence and atomic force microscopy2007

    • Author(s)
      S, Kidoaki・T, Matsuda
    • Journal Title

      Journal of Biomedical Materials Research, Part A 81

      Pages: 803-810

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shape-engineered vascular endothelial cells:nitric oxide production, cell elasticity, and actin cytoskeletal features2007

    • Author(s)
      S, Kidoaki・T, Matsuda
    • Journal Title

      Journal of Biomedical Materials Research, Part A 81

      Pages: 728-735

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic force spectroscopy of the specific interaction between PDZ-domain and its recognition peptides2007

    • Author(s)
      T.Maki, S.Kidoaki, K.Usui, H.Suzuki, M.Ito, F.Ito, Y.Hayashizaki, T.Matsuda
    • Journal Title

      Langmuir 23

      Pages: 2668-2673

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Microelastic gradient gelatinous gels to induce cellular mechanotaxis2007

    • Author(s)
      S.Kidoaki, T.Matsuda
    • Journal Title

      J. Biothechnol. (投稿中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Relationship between apical membrane elasticity and stress fiber organization in fibroblasts analyzed by fluorescence and atomic force microscopy2006

    • Author(s)
      S.Kidoaki, T.Matsuda, K.Yoshikawa
    • Journal Title

      Biomechan Model Mechanobiol 5

      Pages: 263-272

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Shape-engineered fibroblasts : cell elasticity and actin cytoskeletal features characterized by fluorescence and atomic force microscopy2006

    • Author(s)
      S.Kidoaki, T.Matsuda
    • Journal Title

      J. Biomed. Mater. Res. A (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Shape-engineered vascular endothelial cells : nitric oxide production, cell elasticity, and actin cytoskeletal features2006

    • Author(s)
      S.Kidoaki, T.Matsuda
    • Journal Title

      J. Biomed. Mater. Res. A (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Characterization of the cellular biomechanical responses caused on microprocessed substrates : effect of micropatterned cell adhesiveness and microelastici gradient.2006

    • Author(s)
      S.Kidoaki, T.Matsuda
    • Journal Title

      Proceedings of the International Symposium on Micro-Nanomechatronics and Human Science (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Poly(N-isopropylacrylamide) (PNIPAAM)-grafted hydrogel surfaces : Interrelationship between microscopic structures and mechanical property of surface regions and cell adhesiveness2005

    • Author(s)
      S.Ohya, S.Kidoaki, T.Matsuda
    • Journal Title

      Biomaterials 26

      Pages: 3105-3105

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Force measurement on antigen-antibody interaction by atomic force microscopy using photograft-polymer spacer2005

    • Author(s)
      Alimjan Idiris, S.Kidoaki, K.Usui, T.Maki, H.Suzuki, M.Ito, M.Aoki, Y.Hayashizaki, T.Matsuda.
    • Journal Title

      Biomacromolecules 6

      Pages: 2776-2776

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Relationship between apical membrane elasticity and stress fiber organization in fibroblasts analyzed by fluorescence and atomic force microscopy

    • Author(s)
      S.Kidoaki, T.Matsuda, K.Yoshikawa
    • Journal Title

      Biomechanics and Modeling in Mechanobiology (発表予定)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Shape-engineered fibroblasts : cell elasticity and actin cytoskeletal features characterized by fluorescence and atomic force microscopy

    • Author(s)
      Satoru Kidoaki, Takehisa Matsuda
    • Journal Title

      Journal of Biomedical Materials Research, part A (発表予定)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Nitric oxide production, cell elasticity, and actin cytoskeletal features of the shape-engineered vascular endothelial cells cultured on microprocessed surface

    • Author(s)
      Satoru Kidoaki, Takehisa Matsuda
    • Journal Title

      Journal of Biomedical Materials Research, part A (発表予定)

    • Related Report
      2005 Annual Research Report
  • [Presentation] 生体材料表面の弾性分布設計による細胞運動のベクトル制御2007

    • Author(s)
      木戸秋悟、松田武久
    • Organizer
      第56回高分子討論会
    • Place of Presentation
      名古屋工業大学
    • Related Report
      2007 Annual Research Report
  • [Presentation] 生体材料表面の弾性分布設計による細胞行動制御2007

    • Author(s)
      木戸秋悟、松田武久
    • Organizer
      第45回日本生物物理学会年会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2007 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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