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The regulation of condensin complex reveals cooperation between transcription or duplication and chromosome organization.

Research Project

Project/Area Number 18K14629
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionJapanese Foundation for Cancer Research

Principal Investigator

TAKAHASHI Motoko  公益財団法人がん研究会, がん研究所 実験病理部, 特任研究員 (60793594)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsコンデンシン / 一本鎖DNA / 二本鎖DNA / 染色体凝縮 / 転写 / 複製 / 細胞周期 / SMC複合体 / クロマチン
Outline of Final Research Achievements

Mitotic chromosome assembly is crucial for cells to maintain and inherit the genome safely and accurately. Condensin complexes (I and II in human) are key players for chromosome condensation. Their dysfunction causes chromosome missegregation and DNA damage, is implicated in developing some cancers. Despite their importance, how condensins are regulated for their localization and function on chromatin or chromosomes remains largely unsolved. In this study, we revealed that condensins show significant affinity to single stranded DNA depending on the cell cycle and that how replication and transcription mechanisms are involved in regulating condensins. The relationship among chromosome condensation, replication and transcription might shed light on new aspects of cancer etiology.

Academic Significance and Societal Importance of the Research Achievements

コンデンシン複合体の機能不全は、染色体異数性やDNA損傷を引き起こし、一部のがんの要因となることが知られている。よって、コンデンシンの機能・制御機構を理解することは、基礎生物学的知見としてのみならず、がんの基礎研究としても重要な意味を持つ。本研究ではヒトの2種類のコンデンシン複合体のそれぞれの局在や機能制御について、複製・転写機構という染色体構築と一見かけ離れたクロマチン動態が実は密接に関わっていることを明らかにした。こうした視点は、がんにおけるゲノム構造異常や染色体不安定性の新たな機序の解明につながることが期待される。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Kinetochore stretching-mediated rapid silencing of the spindle-assembly checkpoint required for failsafe chromosome segregation2021

    • Author(s)
      Uchida Kazuhiko S.K.、Jo Minji、Nagasaka Kota、Takahashi Motoko、Shindo Norihisa、Shibata Katsushi、Tanaka Kozo、Masumoto Hiroshi、Fukagawa Tatsuo、Hirota Toru
    • Journal Title

      Current Biology

      Volume: - Issue: 8 Pages: 1581-1591.e3

    • DOI

      10.1016/j.cub.2021.01.062

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nuclear microenvironment in cancer: Control through liquid‐liquid phase separation2020

    • Author(s)
      Nozawa Ryu‐Suke、Yamamoto Tatsuro、Takahashi Motoko、Tachiwana Hiroaki、Maruyama Reo、Hirota Toru、Saitoh Noriko
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 9 Pages: 3155-3163

    • DOI

      10.1111/cas.14551

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Folding the genome into mitotic chromosomes2019

    • Author(s)
      Motoko Takahashi, Toru Hirota
    • Journal Title

      Current Opinion in Cell Biology

      Volume: 60 Pages: 19-26

    • DOI

      10.1016/j.ceb.2019.03.005

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Dynamics of sister chromatids through the cell cycle: Together and apart2018

    • Author(s)
      Takahashi Motoko、Hirota Toru
    • Journal Title

      The Journal of Cell Biology

      Volume: 217 Issue: 6 Pages: 1887-1889

    • DOI

      10.1083/jcb.201804091

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The chromosome organization depends on dynamic interactions between condensin and chromosomal axial proteins2021

    • Author(s)
      Motoko Takahashi, Toru Hirota
    • Organizer
      第80回日本癌学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 細胞周期を通じたクロマチン構造変換機構の解析2019

    • Author(s)
      髙橋 元子、広田 亨
    • Organizer
      第92回日本生化学会大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Single stranded DNA in interphase is a key chromatin structure for mitotic chromosome organization2018

    • Author(s)
      Takahashi M, Hirota T
    • Organizer
      The 11th 3R & 3C Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Characterization of DNA binding mode of human condensin I and II2018

    • Author(s)
      Takahashi M, Hirota T
    • Organizer
      The 7th Chromosome OS meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Single stranded DNA in interphase is a key chromatin structure for mitotic chromosome organization2018

    • Author(s)
      Takahashi M, Hirota T
    • Organizer
      第77回日本癌学会学術総会
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Remarks] 公益財団法人 がん研究会 がん研究所 実験病理部

    • URL

      https://www.jfcr.or.jp/tci/exppathol/index.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] がん研究会 がん研究所 実験病理部

    • URL

      https://www.jfcr.or.jp/tci/exppathol/index.html

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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