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Investigation of cohesin regulatory network by genetics and proteomics

Research Project

Project/Area Number 17K17986
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Molecular biology
Cell biology
Research InstitutionTokyo Metropolitan University

Principal Investigator

Abe Takuya  首都大学東京, 理学研究科, 助教 (50779999)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsDT40 / コヒーシン / DNA複製 / DNA修復 / ESCO1 / ESCO2 / WAPL / DDX11 / CTF18
Outline of Final Research Achievements

In this study, we used genetic and proteomic approaches to understand the mechanism of cohesin regulation. In genetic approach, we established multi-gene knockout cell lines to understand the genetic interaction of cohesin regulators. We found several synthetic lethal interactions and their suppressor mutations. These findings will contribute to understand the cohesin regulatory network. In proteomic approach, we purified cohesin complex by double affinity purification. After MS analysis, we found a chromatin remodeling complex as a new binding partner for cohesin.

Academic Significance and Societal Importance of the Research Achievements

コヒーシンは姉妹染色分体間をつなぐ「のり」の役割を果たすタンパク質複合体であり、複製されたDNAが分裂期の前に離れないように互いを接着している。コヒーシンはDNAの構造を変化させることでDNAを介在するあらゆる反応 (転写、DNA複製、DNA修復、細胞分裂など) に関わっていることから、コヒーシンの制御機構は世界中で盛んに研究されている。しかしながら多くの研究はコヒーシン本体の構造変換に焦点を当てており、20以上存在する「コヒーシン制御因子」の機能解析はあまり進んでいなかった。本研究により、コヒーシン制御因子がどのように連関して機能しているのかを明らかにすることができた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2019 2018 2017 Other

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

  • [Int'l Joint Research] IFOM(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] ESCO1/2's roles in chromosome structure and interphase chromatin organization.2017

    • Author(s)
      Kawasumi R, Abe T, Arakawa H, Garre M, Hirota K, Branzei D.
    • Journal Title

      Genes Dev.

      Volume: 31 Pages: 2136-2150

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ネガティブセレクションマーカーを用いた 染色体改変技術の構築2019

    • Author(s)
      阿部拓也
    • Organizer
      第8回DNA損傷応答ワークショップ
    • Related Report
      2019 Annual Research Report
  • [Presentation] DNA複製因子TIPINと相同組み換え因子BRCA1の 遺伝学的相互作用の解析2019

    • Author(s)
      阿部拓也
    • Organizer
      分子生物学会ワークショップ「多様なDNA損傷応答機構のトランスアクション ーゲノム不安定性の病態解明と治療応用」
    • Related Report
      2019 Annual Research Report
  • [Presentation] AND-1 fork protection function prevents fork resection and is essential for proliferation2018

    • Author(s)
      阿部 拓也
    • Organizer
      The 11th 3R+3C Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 複製フォーク構成因子とヒストンバリアントH2AX、DNA修復因子の遺伝学的関係性の解析2018

    • Author(s)
      阿部 拓也
    • Organizer
      ヒストンバリアント研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A method to evaluate the frequency of aneuploidy2017

    • Author(s)
      Abe T
    • Organizer
      SMC proteins
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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