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Linkage between DNA replication and chromosome assembly mediated by condensin II: focusing on chromosome fragile sites

Research Project

Project/Area Number 25440184
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Genetics/Chromosome dynamics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Ono Takao  国立研究開発法人理化学研究所, 平野染色体ダイナミクス研究室, 専任研究員 (20291172)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsコンデンシンII / 染色体脆弱部位 / 複製ストレス / 染色体凝縮 / セントロメア / 分岐型複製中間体 / 相同組換え / 間期核ブリッジ
Outline of Final Research Achievements

Condensin II plays a central role in the process of mitotic chromosome condensation, and initiates resolution of replicated regions of chromosome s (sister chromatids) during S phase. This indicates that Condensin II is a critical factor that links chromosome duplication to condensation. To clarify the molecular mechanisms of this linkage mediate by condensin II, the role of condensin II in chromosome fragile sites (CFS), where chromatid breaks/gaps are continually observed under the presence of replicative stress, was examined in the present study. Cytological and cytogenetic assays, however, revealed that condensin II does not suppress the incidence of chromatid breaks/gaps. Alternatively, it is found that condensin II contributes to the appropriate localization of nucleases required for the process of removing a branch type replicative intermediates. This feature was evident in the process of separation in the centromeric regions under the absence of condensin II.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (16 results)

All 2016 2015 2013 Other

All Journal Article (1 results) Presentation (3 results) (of which Invited: 1 results) Remarks (12 results)

  • [Journal Article] 分裂期を超えたコンデンシン II の多彩な役割2013

    • Author(s)
      小野教夫, 西出賢次, 平野達也
    • Journal Title

      実験医学

      Volume: 31 Pages: 2586-2591

    • Related Report
      2013 Research-status Report
  • [Presentation] コンデンシンがつくる染色体軸の特性:可逆的再組織化アッセイを用いた解析2016

    • Author(s)
      小野教夫、平野達也
    • Organizer
      第33回染色体ワークショップ
    • Place of Presentation
      宮城県松島町
    • Year and Date
      2016-01-12
    • Related Report
      2015 Annual Research Report
  • [Presentation] Diverse functions of condensin II through the cell cycle2015

    • Author(s)
      Takao Ono and Tatsuya Hirano
    • Organizer
      The 5th Asian Chromosome Colloquium
    • Place of Presentation
      Kasetsart University (Bangkok, Thailand)
    • Year and Date
      2015-04-29 – 2015-04-30
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] コンデンシンIIによる染色体複製と分離の機能連係2013

    • Author(s)
      小野教夫, 平野達也
    • Organizer
      日本人類遺伝学会第58回大会
    • Place of Presentation
      江陽グランドホテル(宮城県仙台市)
    • Related Report
      2013 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「染色体」

    • URL

      http://ja.wikipedia.org/wiki/%E6%9F%93%E8%89%B2%E4%BD%93

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「姉妹染色分体」

    • URL

      http://ja.wikipedia.org/wiki/%8E%6F%96%85%90%F5%90%46%95%AA%91%CC

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「染色体凝縮」

    • URL

      http://ja.wikipedia.org/wiki/%90%F5%90%46%91%CC%8B%C3%8F%6B

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「コンデンシン」

    • URL

      http://ja.wikipedia.org/wiki/%83%52%83%93%83%66%83%93%83%56%83%93

    • Related Report
      2015 Annual Research Report
  • [Remarks] 理化学研究書平野染色体ダイナミクス研究室

    • URL

      http://www.riken.jp/chromdyna/

    • Related Report
      2015 Annual Research Report
  • [Remarks] (3) フリー百科事典ウィキペディア「コンデンシン」

    • URL

      http://ja.wikipedia.org/wiki/%83%52%83%93%83%66%83%93%83%56%83%93

    • Related Report
      2014 Research-status Report
  • [Remarks] 理化学研究所 平野染色体ダイナミクス研究室

    • URL

      http://www.riken.jp/chromdyna/index.html

    • Related Report
      2014 Research-status Report
  • [Remarks] 平野染色体ダイナミクス研究室ホームページ

    • URL

      http://www.riken.jp/chromdyna/index.html

    • Related Report
      2013 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「染色体」

    • URL

      http://ja.wikipedia.org/wiki/%E6%9F%93%E8%89%B2%E4%BD%93

    • Related Report
      2013 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「姉妹染色分体」

    • URL

      http://ja.wikipedia.org/wiki/%8E%6F%96%85%90%F5%90%46%95%AA%91%CC

    • Related Report
      2013 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「染色体凝縮」

    • URL

      http://ja.wikipedia.org/wiki/%90%F5%90%46%91%CC%8B%C3%8F%6B

    • Related Report
      2013 Research-status Report
  • [Remarks] フリー百科事典ウィキペディア「コンデンシン」

    • URL

      http://ja.wikipedia.org/wiki/%83%52%83%93%83%66%83%93%83%56%83%93

    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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