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Unraveling biological significance of RNA higher-order structure

Research Project

Project/Area Number 19K22519
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 48:Biomedical structure and function and related fields
Research InstitutionThe University of Tokyo (2020-2021)
Institute of Physical and Chemical Research (2019)

Principal Investigator

Ariyoshi Tetsuro  東京大学, 大学院医学系研究科(医学部), 客員研究員 (00782103)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsRNA / 蛍光RNA / RNA高次立体構造 / 蛍光イメージング / グアニン四重鎖 / イメージング / 遺伝子発現制御
Outline of Research at the Start

ある種のRNAはグアニン四重鎖(G4)という特殊な構造を形成すること、G4の形成・解消がタンパク質による制御を受けることが知られている。G4の過剰な形成は脆弱X症候群、ALSなどの疾患に関与すると考えられているが、技術的限界からG4解消タンパク質の同定には至っていない。そこで本研究計画では、研究代表者が独自に開発した「G4形成依存的に光るRNA」を用い、G4解消タンパク質を網羅的に同定する。さらに同定されたG4解消タンパク質の標的遺伝子を決定し、G4を介した遺伝子発現制御機構を明らかにする。最後に、G4解消タンパク質を用いた疾患治療への応用を検討する。

Outline of Final Research Achievements

In this study the person in charge revealed the regulation of RNA higher-order structure by proteins.
First the person in charge developed the screening system for RNA higher-order structure regulating proteins in 293T cells and iPS cells. Then by utilizing AiryScan confocal microscope and fluorescent RNA "Romanesco" the person in charge revealed RNA higher-order structure regulating proteins-dependent fluorescence decrease. By screening some candidate RNA higher-order structure regulating proteins the person in charge successfully revealed that some proteins possess the ability to regulate RNA higher-order structure in cells.

Academic Significance and Societal Importance of the Research Achievements

RNA立体構造を細胞内で制御するタンパク質の同定により、RNA立体構造の異常に起因すると考えられている疾患の新たな治療法開発の道を開いた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2019

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Imaging endogenous mRNA expression dynamics with a bright fluorogenic RNA2019

    • Author(s)
      有吉哲郎、岡田康志
    • Organizer
      第19回日本蛋白質科学会年会第71回日本細胞生物学会年会合同年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Imaging transcriptional dynamics of the endogenous gene with a bright fluorogenic RNA2019

    • Author(s)
      有吉哲郎、岡田康志
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Imaging Endogenous Messenger RNA Expression Dynamics with an RNA Counterpart of a GFP.2019

    • Author(s)
      Tetsuro Ariyoshi, Yasushi Okada
    • Organizer
      2019 ASCB
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-07-04   Modified: 2023-01-30  

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