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Functional analysis of environmental response of photosynthetic cells by on-chip spatiotemporal control

Research Project

Project/Area Number 18H03762
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 20:Mechanical dynamics, robotics, and related fields
Research InstitutionThe University of Tokyo (2020)
Nagoya University (2018-2019)

Principal Investigator

Arai Fumihito  東京大学, 大学院工学系研究科(工学部), 教授 (90221051)

Co-Investigator(Kenkyū-buntansha) 魚住 信之  東北大学, 工学研究科, 教授 (40223515)
丸山 央峰  名古屋大学, 工学研究科, 准教授 (60377843)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2020: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2019: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Fiscal Year 2018: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Keywordsマイクロ・ナノデバイス / 超精密計測 / ナノバイオ / 機械力学・制御 / バイオ関連機器 / マイクロ流体チップ / 光ピンセット / 藍藻 / ラン藻
Outline of Final Research Achievements

Mechanosensitive channel (MscL) is known as an ion channel of cyanobacteria. It is necessary for the regulation of osmotic pressure of cell and tension of the biomembrane. However, the mechanical property of whole cell for such osmoregulation is not well investigated. In this study, to overcome the difficulties caused by the small size of the cell, a measurement system is constructed. This system consists of a robot integrated microfluidic chip and an optical tweezers system. Using this system, change of the mechanical property of the cell caused by the absence of the MscL was clarified by the experiments.

Academic Significance and Societal Importance of the Research Achievements

大きさ2 μm程度の小さな細胞の評価は困難であり,その機能の多くは未解明なままである.光合成細胞である藍藻は,外界の浸透圧が下がると細胞が破裂し,死に至ってしまう.このため,イオン輸送体を用いてイオン等を流出させることにより細胞内の浸透圧を下げ,それ以上の水の流入を防ぐ適応機構が備わっている.本研究により,細胞の浸透圧変化に対する物理指標の変化を定量的に評価する方法論が示され,藍藻の生体膜で機能する特定のイオン輸送体によって現れる藍藻の特性が明らかになった.提案手法は,他の実験系にも適用できるため,波及効果がある.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 2018 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (11 results) (of which Int'l Joint Research: 5 results) Remarks (2 results)

  • [Journal Article] Evaluating Young's Modulus of Single Yeast Cells Based on Compression Using an Atomic Force Microscope with a Flat Tip2021

    • Author(s)
      Chang Di、Hirate Takahiro、Uehara Chihiro、Maruyama Hisataka、Uozumi Nobuyuki、Arai Fumihito
    • Journal Title

      Microscopy and Microanalysis

      Volume: 27 Issue: 2 Pages: 392-399

    • DOI

      10.1017/s1431927620024903

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] マイクロ流体チップ内の局所溶液置換の高速化を目指した流路デザイン2021

    • Author(s)
      金子真悟,新井史人
    • Organizer
      化学とマイクロ・ナノシステム学会第43回研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 浸透圧変化に対する単一細胞の動的形状変化の計測2020

    • Author(s)
      金子真悟,解良康太,魚住信之,新井史人
    • Organizer
      日本機械学会ロボティクス・メカトロニクス講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Calibration process for the Young’s modulus of a mechanically trapped microbead measured by atomic force microscopy2019

    • Author(s)
      Di Chang, Takahiro Hirate, Chihiro Uehara, Nobuyuki Uozumi and Fumihito Arai
    • Organizer
      2019 International Symposium on Micro-NanoMechatronics and Human Science (MHS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 液体架橋力を用いた局所溶液置換によるラン藻への浸透圧ショック2019

    • Author(s)
      金子真悟, 解良康太, 魚住信之, 新井史人
    • Organizer
      化学とマイクロ・ナノシステム学会第40回研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 3次元ノズル形状の形成によるマイクロ狭窄流路における粒子供給性能の向上2018

    • Author(s)
      杉浦広峻,佐久間臣耶,新井史人
    • Organizer
      第36回日本ロボット学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 機械的指標に基づくセルソーティングシステムの提案2018

    • Author(s)
      中原 康,佐久間臣耶,新井史人
    • Organizer
      第36回日本ロボット学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 光学顕微鏡に統合化したレーザ干渉計よる微小構造物の高速変位計測2018

    • Author(s)
      杉浦広峻,佐久間臣耶,新井史人
    • Organizer
      第19回システムインテグレーション部門講演会(SI2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 3-D conical microchannel fabricated by wet etching using Ti/Au sacrificial layer2018

    • Author(s)
      Hirotaka Sugiura, Shinya Sakuma, Fumihito Arai
    • Organizer
      International Conference on Miniaturized Systems for Chemistry and Life Sciences (microTAS 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-speed On-chip Mixing Using On-demand Vortex Generation in Microstream2018

    • Author(s)
      Shinya Sakuma, Yusuke Kasai, Fumihito Arai
    • Organizer
      International Conference on Miniaturized Systems for Chemistry and Life Sciences (microTAS 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanical Characterization of a Single Yeast Cell Using a Robot Integrated Microfluidic Chip2018

    • Author(s)
      Di Chang, Shinya Sakuma, Chihiro Uehara, Nobuyuki Uozumi, Fumihito Arai
    • Organizer
      2018 International Symposium on Micro-NanoMechatronics and Human Science (MHS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microscopic Laser Interferometry to Measure the Displacement of Micromechanical Objects2018

    • Author(s)
      Hirotaka Sugiura, Shinya Sakuma, Fumihito Arai
    • Organizer
      2018 International Symposium on Micro-NanoMechatronics and Human Science (MHS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 新井研究室

    • URL

      http://www.biorobotics.t.u-tokyo.ac.jp/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 名古屋大学 新井研究室

    • URL

      http://www.biorobotics.mech.nagoya-u.ac.jp/index.html

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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