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Development of fluorescent sensor protein to monitor the intracellular environment

Research Project

Project/Area Number 15K14229
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Biofunction/Bioprocess
Research InstitutionTokyo Institute of Technology

Principal Investigator

Hisabori Toru  東京工業大学, 科学技術創成研究院, 教授 (40181094)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsレドックス / 蛍光タンパク質 / チオレドキシン / FRET / BRET / 環境センサー / 蛍光蛋白質 / 細胞内環境 / リアルタイム可視化
Outline of Final Research Achievements

This research intended the development of the intracellular environment monitor fluorescence protein, which can monitor the micro-environment in vivo.
We especially tried to develop the monitor protein for the intracellular redox change, and that for the in vivo low molecular metabolic-product. Applying the molecular design of already developed Oba-Q and Re-Q, we succeeded in the development of the new sensor protein which can monitor the redox state of thioredoxin, which is the key protein for the intracellular oxidation-reduction control. However, we could not obtain the sensor protein which can show an enough signal change for the low molecular metabolic-product until now.

Academic Significance and Societal Importance of the Research Achievements

本研究では、我々が最近成功した環境応答型蛍光タンパク質の開発実績を踏まえて、細胞内の様々な代謝産物の増減をリアルタイムで直接モニターすることの出来る新規細胞内環境モニター蛍光タンパク質を開発するための技術を確立することを目指した。その結果、光環境の変化に応じて植物の生理機能を調節するタンパク質として最も重要なチオレドキシンの状態変化をリアルタイムにモニターできるタンパク質CROSTを新たに開発した。このタンパク質は、論文発表後、国際的な反響も大きくすでにドイツの研究者とMTAを締結して、遺伝子の供与を行っている。

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (5 results)

All 2018 2016

All Presentation (4 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] チオレドキシンセンサータンパク質 “THIS”2018

    • Author(s)
      杉浦一徳,横地佑一,久堀徹
    • Organizer
      第59回日本植物生理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Making New Redox Sensitive Fluorescence Proteins2018

    • Author(s)
      Kazunori Sugiura, Toru Hisabori
    • Organizer
      CLS, Tokyo Tech. International Forum 2018; Redox regulation of protein functions, transcription, translation and folding
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New design of redox sensitive fluorescence proteins2016

    • Author(s)
      Kazunori Sugiura, Akiyoshi Higo, Toru Hisabori
    • Organizer
      第54回 日本生物物理学会年会
    • Place of Presentation
      つくば国際会議場、茨城
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
  • [Presentation] 酸化還元応答蛍光タンパク質を利用した光合成生物の細胞内酸化還元状態変化の観察2016

    • Author(s)
      杉浦 一徳,肥後 明佳,久堀 徹
    • Organizer
      第57回日本植物生理学会年会
    • Place of Presentation
      岩手大、盛岡
    • Year and Date
      2016-03-18
    • Related Report
      2015 Research-status Report
  • [Patent(Industrial Property Rights)] 細胞内の酸化還元状態をモニターするための蛍光タンパク質、DNA、ベクター、形質転換体、及び方法、並びに抗癌剤スクリーニング方法2016

    • Inventor(s)
      杉浦一徳、久堀徹
    • Industrial Property Rights Holder
      杉浦一徳、久堀徹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016-08-09
    • Related Report
      2016 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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