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Investigation of high spatiotemporal resolution multi-biosensing method using TFT electrode array

Research Project

Project/Area Number 21K18869
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 28:Nano/micro science and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

TIXIER-MITA AGNES  東京大学, 生産技術研究所, 准教授 (00334368)

Co-Investigator(Kenkyū-buntansha) 小森 喜久夫  近畿大学, 工学部, 准教授 (60431813)
酒井 康行  東京大学, 大学院工学系研究科(工学部), 教授 (00235128)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
KeywordsTFT電極アレイ / バイオセンシング / バイオイメージング / BIOMEMS / 膵β細胞 / BioMEMS
Outline of Research at the Start

本研究では、液晶ディスプレイの駆動に利用される透明な薄膜トランジスタ(TFT)電極アレイの電気的な高密度二次元マッピング計測技術に、近年の著しく発展した光学的蛍光イメージング観察と融合させることで、細胞膜電位変化と細胞内現象をリアルタイムで同時評価できる高時空間分解マルチ計測ツールの開発を目指す。この実現に向け本研究では、分泌するインスリンが発光するように改良され、細胞塊状態で同調したインスリン分泌能をもつ発光性ラット膵β細胞株iGLを用い、膵β組織の同調的なインスリン分泌に基づく膜電位変化と発光応答の同時計測を推進する。これにより、TFT電極アレイの最適構造や同時計測の方法論を明確にする。

Outline of Final Research Achievements

Apart from nerve and cardiomyocytes, pancreatic beta cells, which play an important role in blood glucose homeostasis in vivo and are located within the pancreatic islets of Langerhans (islets), are also known to generate action potentials when the extracellular glucose concentration increases. This causes an increase in the intracellular Ca2+ concentration, which in turn leads to insulin secretion. Its secretion is known to fluctuate cyclically. In this application study, the luminescent rat pancreatic β-cell line iGL, which has been improved so that the secreted insulin emits light and is known to have a synchronised insulin-secreting capacity in the cell mass state, was used to develop a simultaneous evaluation interface technique and propose a high spatiotemporal analysis method for the action potential of the synchronised pancreatic β-cell tissue and the optical response of insulin secretion.

Academic Significance and Societal Importance of the Research Achievements

TFT電極アレイを用いたiGL細胞培養の膜電位のリアルタイム評価と蛍光イメージングを確立しました。本申請研究は、個々の電極のON/OFF状態をTFTアレイでスイッチ制御される大面積透明電極アと顕微鏡観 察の比較提案デバイ スは遥かに広大な領域 を精密観察可能。このセンシング技術は、時空間的に高い結果が得られたことから、今後、創薬や予後予測のためのin vitro生体モデル評価デバイスの開発に活用することができます。

Report

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

    (5 results)

All 2022 2021

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Invited: 2 results)

  • [Journal Article] Real-time High-resolution Measurement of Pancreatic β Cell Electrophysiology Based on Transparent Thin-film Transistor Microelectrode Arrays2022

    • Author(s)
      Dongchen Zhu, Anne-Claire Eiler, Satoshi Ihida, Yasuyuki Sakai, Hiroshi Toshiyoshi, Agnes Tixier-Mita, and Kikuo Komori
    • Journal Title

      IEEJ Transactions on Sensors and Micromachines

      Volume: 142 Issue: 10 Pages: 266-272

    • DOI

      10.1541/ieejsmas.142.266

    • ISSN
      1341-8939, 1347-5525
    • Year and Date
      2022-10-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Cell Culture Multimodal Electrical Analyses with Thin-Film-Transistor Sensing Platform2022

    • Author(s)
      Agnes Tixier-Mita, Ihida Satoshi, Dongchen Zhu, Pierre-Marie Faure, Yasuyuki Sakai, Timothee Levi, and Hiroshi Toshiyoshi
    • Organizer
      第128回日本解剖学会総会・全国学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] In-vitro Electrophysiology Evaluation of Beta-cells based on Thin Film Transistor Microelectrode Array2022

    • Author(s)
      Dongchen Zhu, Anne-Claire Eiler, Satoshi Ihida, Yasuyuki Sakai, Hiroshi Toshiyoshi, Agnes Tixier-Mita, Kikuo Komori
    • Organizer
      日本動物実験代替法学会 第35回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Thin-Film-Transistor Sensing Platform for Real-time Multi-modal Analyses of Excitable Cells Culture2022

    • Author(s)
      Agnes Tixier-Mita, Satoshi Ihida, Anne-Claire Eiler, Tieying Xu, Pierre-Marie Faure, Timothee Levi and Hiroshi Toshiyoshi
    • Organizer
      NEURO'2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Pancreatic β cells real-time simultaneous electrophysiology mapping and fluorescent bioimaging with a high-resolution thin-film transistor arrays2021

    • Author(s)
      Dongchen Zhu
    • Organizer
      第39回「センサ・マイクロマシンと応用システム」シンポジウム
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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