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Developing light inducible degron system in Drosophila

Research Project

Project/Area Number 19K22378
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Fukaya Takashi  東京大学, 定量生命科学研究所, 准教授 (00786163)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsショウジョウバエ / オプトジェネティクス / ライブイメージング / 転写 / ゲノム編集 / プロテインノックダウン / ゲノム構造 / ショウジョウバエ初期胚 / 転写制御 / デグロン
Outline of Research at the Start

2005年に初めて報告されたオプトジェネティクス技術は光によって神経細胞の活性を自在に操作することを可能にし、神経科学に革新をもたらした。本研究計画では、既存の枠組みを超えて生命科学の全分野に応用可能な新規オプトジェネティク技術を創出し、生体内のあらゆるタンパク質機能を光によって操作する革新的手法の実現に挑む。さらに本技術を個体レベルに応用し、光によって発生運命を自在操作する世界的にも前例のない独創的手法へと発展させる。このことにより従来手法の技術的限界を突破し、生命科学の飛躍的発展を大きく促進する技術基盤を創出する。

Outline of Final Research Achievements

In this project, we aimed to develop a novel experimental system to inhibit the function of target proteins in a light-dependent manner. We found that induction of aggregation via CRY2 oligomerization is effective in inhibiting the function of transcription factors such as Bicoid. On the other hand, proteasomal protein degradation via the iLID-SspB system or light-dependent nuclear export system such as LINX/LEXY requires further optimization of the experimental system in Drosophila. By applying the genome editing technology established through this project, significant progress has been made in elucidating the function of higher-order genomic structures in transcriptional regulation and the regulatory mechanism of transcriptional bursting in developing Drosophila embryos.

Academic Significance and Societal Importance of the Research Achievements

本研究では、近年精力的に開発されている光操作技術の実用性をショウジョウバエ個体レベルで多角的に検証した。その結果、培養細胞レベルでの解析で広く用いられてきた手法を個体レベルで応用するためには、標的タンパク質の特性に応じた最適化が必要であることが強く示唆された。本研究によって明らかとされた、転写制御における高次ゲノム構造の機能については、近年のHi-C解析などに明とされてきたTAD構造の生物学的意義を理解する上で重要な知見となる。また転写バーストを介した遺伝子発現の時空間的なパターン形成メカニズムの理解は、個体発生におけるゲノム機能を理解する上で重要な成果である。

Report

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

    (9 results)

All 2022 2021 2020 Other

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

  • [Journal Article] Molecular architecture of enhancer-promoter interaction2022

    • Author(s)
      Hamamoto Kota、Fukaya Takashi
    • Journal Title

      Current Opinion in Cell Biology

      Volume: 74 Pages: 62-70

    • DOI

      10.1016/j.ceb.2022.01.003

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic modulation of enhancer responsiveness by core promoter elements in living <i>Drosophila</i> embryos2021

    • Author(s)
      Yokoshi Moe、Kawasaki Koji、Camb?n Manuel、Fukaya Takashi
    • Journal Title

      Nucleic Acids Research

      Volume: 50 Issue: 1 Pages: 92-107

    • DOI

      10.1093/nar/gkab1177

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic regulation of anterior-posterior patterning genes in living Drosophila embryos2021

    • Author(s)
      Fukaya Takashi
    • Journal Title

      Current Biology

      Volume: 未定 Issue: 10 Pages: 2227-2236.e6

    • DOI

      10.1016/j.cub.2021.02.050

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualizing the Role of Boundary Elements in Enhancer-Promoter Communication2020

    • Author(s)
      Moe Yokoshi, Kazuma Segawa, Takashi Fukaya
    • Journal Title

      Molecular Cell

      Volume: VOLUME 78, ISSUE 2 Issue: 2 Pages: 224-235

    • DOI

      10.1016/j.molcel.2020.02.007

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Transcription dynamics in living Drosophila embryos2021

    • Author(s)
      Takashi Fukaya
    • Organizer
      JSDB/APDBN Symposium RNA, Stem Cells, Technology in Development
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Transcription dynamics in living Drosophila embryos2021

    • Author(s)
      Takashi Fukaya
    • Organizer
      The 1st ASHBi SignAC workshop
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Regulation of transcriptional bursting in living Drosophila embryos2020

    • Author(s)
      Takashi Fukaya
    • Organizer
      日本分子生物学会年会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Regulation of transcriptional bursting in living Drosophila embryos2020

    • Author(s)
      Takashi Fukaya
    • Organizer
      日本生化学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] コアプロモーターを介した転写バースト制御メカニズムを解明

    • URL

      https://www.iqb.u-tokyo.ac.jp/pressrelease/211213/

    • Related Report
      2021 Annual Research Report

URL: 

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

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