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Analysis of the mechanism underlying G1/S checkpoint threshold by CDK-Cyclin

Research Project

Project/Area Number 19K16050
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionNational Institute for Basic Biology

Principal Investigator

Goto Yuhei  基礎生物学研究所, 定量生物学研究部門, 助教 (50814620)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords定量イメージング / CDK / サイクリン / 分裂酵母 / 光遺伝学 / PhyB / Cry2 / FRET / 細胞周期 / 蛍光相関分光法 / 微小流路 / ノックイン / CRISPR-Cas9
Outline of Research at the Start

細胞外界からの刺激や内在性のストレスなどのアナログな情報が、細胞周期を進めるか否かのデジタル(1 or 0)な情報に変換されているが、その閾値の定量的な決定機構は明らかになっていない。
本研究では、細胞周期G1/S期チェックポイントに着目し、分裂酵母およびヒト培養細胞を用いて1細胞定量イメージング手法により進化的に保存された「Cdk-サイクリンによるG1/S期チェックポイントの閾値決定機構の解明」を目的とする。

Outline of Final Research Achievements

Eukaryotic cells sense the environmental and their own situation to decide whether or not to proliferate. Cell cycle checkpoints are used to arrest the cell cycle according to the situations. However, it remains elusive how these checkpoints convert continuous (analog) external stimuli into binary (digital) information.
In this study, we aimed to elucidate the quantitative threshold mechanism by observing the dynamics of CDK, a master regulator of the cell cycle, at the single-cell level. We succeeded in developing a novel CDK activity sensor that can measure CDK activity in living cells. We also succeeded in artificially manipulation of the cell cycle checkpoint by directly perturbing CDKs through optogenetics.
Throughout this study, it is suggested that the fission yeast cell cycle integrates various inputs into CDK activity and that the final CDK activity, rather than the expression level of a particular factor, is responsible for the substantial threshold determination.

Academic Significance and Societal Importance of the Research Achievements

これまで細胞周期の研究の多くは、生化学によるスナップショット、かつ細胞集団の平均的な挙動しか観測してこなかった。また、細胞周期は個々の細胞で独立しているために、薬剤などを用いて細胞周期を同調する必要があった。本研究で開発したCDK活性センサーを用いると、1細胞でのCDKの活性を経時的に、薬剤による同調無しに追うことが可能となり、細胞周期の中でのCDK活性動態を高時間分解能で追うことが可能となる。また、細胞周期への摂動も光遺伝学を用いることにより、顕微鏡観察下で任意のタイミングで操作することが可能となった。これらの技術をさらに応用し生体内での細胞周期制御が可能となることが期待される。

Report

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

    (15 results)

All 2021 2020 2019 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Near-infrared imaging in fission yeast using a genetically encoded phycocyanobilin biosynthesis system2021

    • Author(s)
      Sakai Keiichiro、Kondo Yohei、Fujioka Hiroyoshi、Kamiya Mako、Aoki Kazuhiro、Goto Yuhei
    • Journal Title

      Journal of Cell Science

      Volume: 134 Issue: 24 Pages: 1-15

    • DOI

      10.1242/jcs.259315

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identification of <i>ksg1</i> mutation showing long‐lived phenotype in fission yeast2021

    • Author(s)
      Matsui Kotaro、Okamoto Keisuke、Hasegawa Tomoka、Ohtsuka Hokuto、Shimasaki Takafumi、Ihara Kunio、Goto Yuhei、Aoki Kazuhiro、Aiba Hirofumi
    • Journal Title

      Genes to Cells

      Volume: 26 Issue: 12 Pages: 967-978

    • DOI

      10.1111/gtc.12897

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A microtubule-LUZP1 association around tight junction promotes epithelial cell apical constriction2020

    • Author(s)
      Yano Tomoki、Tsukita Kazuto、Kanoh Hatsuho、Nakayama Shogo、Kashihara Hiroka、Mizuno Tomoaki、Tanaka Hiroo、Matsui Takeshi、Goto Yuhei、Komatsubara Akira、Aoki Kazuhiro、Takahashi Ryosuke、Tamura Atsushi、Tsukita Sachiko
    • Journal Title

      The EMBO Journal

      Volume: 40 Issue: 2

    • DOI

      10.15252/embj.2020104712

    • URL

      https://localhost/en/publications/5b8a970c-0f27-4635-b2eb-3af07674acb9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improvement of Phycocyanobilin Synthesis for Genetically Encoded Phytochrome-Based Optogenetics2020

    • Author(s)
      Uda Youichi、Miura Haruko、Goto Yuhei、Yamamoto Kei、Mii Yusuke、Kondo Yohei、Takada Shinji、Aoki Kazuhiro
    • Journal Title

      ACS Chemical Biology

      Volume: 15 Issue: 11 Pages: 2896-2906

    • DOI

      10.1021/acschembio.0c00477

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Single-cell quantification of the concentrations and dissociation constants of endogenous proteins2019

    • Author(s)
      Akira T Komatsubara, Yuhei Goto, Yohei Kondo, Michiyuki Matsuda, Kazuhiro Aoki
    • Journal Title

      Journal of Biological Chemistry

      Volume: 294 Issue: 15 Pages: 6062-6072

    • DOI

      10.1074/jbc.ra119.007685

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 光遺伝学による分裂酵母の細胞周期操作2021

    • Author(s)
      後藤祐平、中村 彰伸、酒井 啓一郎、青木一洋
    • Organizer
      酵母遺伝学フォーラム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 近赤外蛍光タンパク質iRFPによる分裂酵母の細胞内タンパク質の可視化法の確立2021

    • Author(s)
      酒井 啓一郎、近藤 洋平、青木 一洋、後藤 祐平
    • Organizer
      酵母遺伝学フォーラム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 分裂酵母Schizosaccharomyces pombeのCDK活性ライブイメージング2021

    • Author(s)
      杉山博紀、後藤祐平、青木一洋
    • Organizer
      酵母遺伝学フォーラム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 細胞周期チェックポイントの光操作手法の開発2021

    • Author(s)
      後藤祐平
    • Organizer
      細胞生物学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of optogenetic tools to manipulate cell cycle checkpoints2021

    • Author(s)
      Yuhei Goto
    • Organizer
      Optogenetics Australia workshop 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Single-cell quantification of the concentrations and dissociation constants of endogenous proteins2020

    • Author(s)
      Yuhei Goto, Akira T. Komatsubara, Yohei Kondo, Michiyuki Matsuda, and Kazuhiro Aoki
    • Organizer
      8th Annual Winter q-bio conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Live-cell quantification of endogenous protein interactions by genome editing technique and fluorescence cross-correlation spectroscopy2019

    • Author(s)
      Kazuhiro Aoki, Komatsubara Akira, Yuhei Goto, Yohei Kondo
    • Organizer
      第71回細胞生物学会年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Live-Cell Imaging and Optogenetics Reveals AND Gate Role of ERK and Akt in G1/S transition2019

    • Author(s)
      Yuhei Goto, Gembu Maryu, Akira T. Komatsubara, Michiyuki Matsuda, and Kazuhiro Aoki
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Live-cell quantification of the concentration and dissociation constant of endogenous proteins by a combination of CRISPR/Cas9 genome editing and FCS/FCCS2019

    • Author(s)
      Yuhei Goto, Kazuhiro Aoki
    • Organizer
      第2回 基礎生物学研究所ゲノム編集所内セミナー
    • Related Report
      2019 Research-status Report
  • [Remarks] 基礎生物学研究所プレスリリース

    • URL

      http://www.nibb.ac.jp/pressroom/news/2019/04/26.html

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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