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Molecular network that regulates pairing between DNA double-strand breaks

Research Project

Project/Area Number 18K11645
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionNagasaki University

Principal Investigator

YAMAUCHI Motohiro  長崎大学, 原爆後障害医療研究所, 助教 (60437910)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsChromosome rearrangement / DNA二本鎖切断 / ユークロマチン / ヘテロクロマチン / DNA double-strand break / 修復 / ペアリング / 放射線
Outline of Final Research Achievements

Chromosome rearrangement (CR) is a genomic alteration caused by radiation exposure. The mechanisms which produce or suppress CR remains poorly understood. CR is generated via misrejoining between two DNA double-strand breaks (DSBs) occurring different genomic locations. Therefore, CR requires “DSB pairing”, which means that two DSBs move and come in close proximity. I already identified four factors regulating DSB pairing (Yamauchi et al. Sci. Rep. 2017). This study revealed two more factors, KAP-1 and CHD3, affected the frequency of DSB pairing.

Academic Significance and Societal Importance of the Research Achievements

Chromosome rearrangement(CR)はがんや白血病、リンパ腫その他、様々な疾患で高頻度に見られるゲノム変化である。またCRは遺伝子融合を引き起こすこともあり、生成した融合遺伝子はがんや造血器腫瘍のドライバーとなることが分かっている。しかしながら、CRの生成・生成抑制機構はこれまでよくわかっていなかった。本研究ではCR生成の必須ステップであるDSBペアリングを制御する2つの因子を同定した。またDSBができるゲノム内の領域によってDSBペアリングの頻度が異なることも明らかにした。これらの発見は、CRの生成メカニズムのより深い理解につながるものと考えている。

Report

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

    (8 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] RNF8 promotes high linear energy transfer carbon-ion-induced DNA double-stranded break repair in serum-starved human cells2020

    • Author(s)
      Nakajima Nakako Izumi、Yamauchi Motohiro、Kakoti Sangeeta、Cuihua Liu、Kato Reona、Permata Tiara Bunga Mayang、Iijima Moito、Yajima Hirohiko、Yasuhara Takaaki、Yamada Shigeru、Hasegawa Sumitaka、Shibata Atsushi
    • Journal Title

      DNA Repair

      Volume: 91-92 Pages: 102872-102872

    • DOI

      10.1016/j.dnarep.2020.102872

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 放射線被ばくで生じたDNA損傷を正確に修復する分子メカニズム2020

    • Author(s)
      山内基弘、平川美弥子、松田尚樹
    • Organizer
      日本放射線安全管理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] DNA二本鎖切断の相同組換え修復におけるBRCA1とスプライシング因子SART1の協調的働き2019

    • Author(s)
      山内基弘、柴田淳史、鈴木啓司、宮川清
    • Organizer
      第78回日本癌学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] スプライシング因子SART1がDNA二本鎖切断の相同組換え修復を促進するメカニズム2019

    • Author(s)
      山内基弘、柴田淳史、加藤玲於奈、安原崇哲、平川美弥子、ハンムームー、宮川清、鈴木啓司、松田尚樹
    • Organizer
      日本放射線影響学会第62回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] DNA二本鎖切断の相同組換え修復におけるスプライシング因子SART1とBRCA1の協調的働き2019

    • Author(s)
      山内基弘、柴田淳史、安原崇哲、加藤玲於奈、平川美弥子、Moe Moe Han、宮川清、鈴木啓司、松田尚樹
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Pre-mRNA splicing factor SART1 facilitates homologous recombination repair by recruiting BRCA1 to DNA double-strand breaks.2019

    • Author(s)
      Motohiro Yamauchi, Atsushi Shibata, Takaaki Yasuhara, Yoshihiko Hagiwara, Miyako Hirakawa, Aizhan Shakayeva, Moe Moe Han, Keiji Suzuki, Naoki Matsuda.
    • Organizer
      The 3rd International Symposium of the Network-type Joint Usage/Research Center for Radiation Disaster Medical Science.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] DNA二本鎖切断の相同組換え修復におけるBRCA1とスプライシング因子SART1の関係2018

    • Author(s)
      山内基弘、柴田淳史、安原崇哲、萩原慶彦、平川美弥子、ハンムームー、鈴木啓司、松田尚樹
    • Organizer
      日本放射線影響学会第61回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] The role of splicing factor SART1 in DNA double-strand break repair by homologous recombination.2018

    • Author(s)
      Aizhan Shakayeva, Motohiro Yamauchi, Miyako Hirakawa, Naoki Matsuda
    • Organizer
      The 14th International Workshop on Ionizing Radiation Monitoring.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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