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Rapid protein degradation reveals functional coupling between the MCM helicase and cohesin, and their pleiotropic functions

Research Project

Project/Area Number 17K15068
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Molecular biology
Research InstitutionNational Institute of Genetics

Principal Investigator

NATSUME Toyoaki  国立遺伝学研究所, 遺伝メカニズム研究系, 助教 (10435513)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsオーキシンデグロン法 / MCM2-7ヘリカーゼ / SMC複合体 / コヒーシン / コンデンシン / SMC5/6 / トポロジカルストレス / MCMヘリカーゼ / SMC5/6複合体 / 細胞周期特異的分解 / タンパク質分解 / 細胞周期
Outline of Final Research Achievements

It is of critical importance for organisms to precisely transmit chromosomal DNA to daughter cells and offsprings for the maintenance of life and species. In this study, by taking advantage of the auxin-inducible degron technology in human cells that enables rapid inactivation of target genes, I studied two important steps in chromosome transmission, DNA replication and chromosome segregation, with unprecedented time-resolution observation, and gave some critical and interesting findings. Especially, this study made a major breakthrough in the study of the SMC5/6 complex, whose role is still controversial in the world, giving foundations of future studies .

Academic Significance and Societal Importance of the Research Achievements

染色体DNAの伝承は、生命科学において重要な課題である一方、この過程の異常は、癌や様々な遺伝性疾患と密接な関わりがある。特に最近、幾つかの遺伝性疾患、癌、母年齢効果が、コヒーシンやSMC5/6の異常によって引き起こされることが分かってきた。本研究では、私が以前確立したヒト細胞におけるオーキシンデグロン法を用いて、コヒーシンに比べて研究が遅れているSMC5/6の基礎的な理解が大きく進んだ。今度は、患者のSMC5/6遺伝子の変異を含めた解析を進めることにより、これらの疾患の分子機構の解明及び治療に繋がると考えている。

Report

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

    (14 results)

All 2019 2018 2017

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Chk1-mediated Cdc25A degradation as a critical mechanism for normal cell cycle progression.2019

    • Author(s)
      Goto H., Natsume T., Kanemaki M.T., Kaito A., Wang S., Gabazza E.C., Inagaki M., Mizoguchi A.
    • Journal Title

      J. Cell Sci.

      Volume: 132 Issue: 2

    • DOI

      10.1242/jcs.223123

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibiting the MCM8-9 complex selectively sensitizes cancer cells to cisplatin and olaparib.2019

    • Author(s)
      Morii, I., Iwabuchi, Y., Mori, S., Suekuni, M., Natsume, T., Yoshida, K., Sugimoto, N., Kanemaki, MT. and Fujita, M.
    • Journal Title

      Cancer Science

      Volume: 110 Issue: 3 Pages: 1044-1053

    • DOI

      10.1111/cas.13941

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of conditional auxin-inducible degron (AID) cells and tight control of degron-fused proteins using the degradation inhibitor auxinole2019

    • Author(s)
      Yesbolatova A, Natsume T, Hayashi K, Kanemaki MT
    • Journal Title

      Methods

      Volume: 印刷中 Pages: 73-80

    • DOI

      10.1016/j.ymeth.2019.04.010

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynein-Dynactin-NuMA clusters generate cortical spindle-pulling forces as a multi-arm ensemble2018

    • Author(s)
      Okumura Masako、Natsume Toyoaki、Kanemaki Masato T、Kiyomitsu Tomomi
    • Journal Title

      eLife

      Volume: 7 Pages: 1-24

    • DOI

      10.7554/elife.36559

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Xrn2 accelerates termination by RNA polymerase II, which is underpinned by CPSF73 activity2018

    • Author(s)
      Eaton Joshua D.、Davidson Lee、Bauer David L.V.、Natsume Toyoaki、Kanemaki Masato T.、West Steven
    • Journal Title

      Genes & Development

      Volume: 32 Issue: 2 Pages: 127-139

    • DOI

      10.1101/gad.308528.117

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ki-67 and condensins support the integrity of mitotic chromosomes through distinct mechanisms2018

    • Author(s)
      Takagi Masatoshi、Ono Takao、Natsume Toyoaki、Sakamoto Chiyomi、Nakao Mitsuyoshi、Saitoh Noriko、Kanemaki Masato T.、Hirano Tatsuya、Imamoto Naoko
    • Journal Title

      Journal of Cell Science

      Volume: 131 Pages: 212092-212092

    • DOI

      10.1242/jcs.212092

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acute Inactivation of the Replicative Helicase in Human Cells Triggers MCM8-9-dependent DNA Synthesis2017

    • Author(s)
      Natsume T, Nishimura K, Minocherhomji S, Bhwmick R, Hickson ID, Kanemaki MT
    • Journal Title

      Genes & Development

      Volume: advanced online Issue: 8 Pages: 816-829

    • DOI

      10.1101/gad.297663.117

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Conditional Degrons for Controlling Protein Expression at the Protein Level2017

    • Author(s)
      Natsume Toyoaki、Kanemaki Masato T.
    • Journal Title

      Annual Review of Genetics

      Volume: 51 Issue: 1 Pages: 83-102

    • DOI

      10.1146/annurev-genet-120116-024656

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 染色体制御におけるヒトSMC5/6の独自な役割を探る2019

    • Author(s)
      夏目 豊彰
    • Organizer
      第36回染色体ワークショップ・第17回核ダイナミクス研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒト染色体の維持における第三のSMC複合体「SMC5/6」の独自な機能を探る2018

    • Author(s)
      夏目 豊彰
    • Organizer
      日本遺伝学会第90回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Elucidating the unique and essential role of human SMC5/6, the yet-to-be-named SMC complex2018

    • Author(s)
      Toyoaki Natsume
    • Organizer
      The 11th 3R&3C Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ゲノムの安定性を維持するためのヒトMCM8-9依存的な複製フォークの再生機構2018

    • Author(s)
      夏目 豊彰
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Acute degradation of the human SMC complexes using the auxin-inducible degron (AID) technology reveals their distinct cell-cycle specific roles2017

    • Author(s)
      Natsume Toyoaki
    • Organizer
      SMC Proteins 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Natsume Toyoaki2017

    • Author(s)
      Acute degradation of the human SMC complexes using the auxin-inducible degron (AID) technology reveals their cell-cycle specific roles in maintaining genome stabilit
    • Organizer
      Eukaryotic DNA Replication & Genome Maintenance
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2023-03-16  

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