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Molecular basis of spatiotemporal regulation of damage tolerance pathways to control the induced mutagenesis

Research Project

Project/Area Number 18H03371
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionNagoya University

Principal Investigator

Masuda Yuji  名古屋大学, 医学系研究科(環医), 准教授 (30273866)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
KeywordsDNA損傷 / DNA複製 / DNA修復 / DNA損傷トレランス / 突然変異 / 損傷トレランス / 変異
Outline of Final Research Achievements

Mutagenesis is one of the critical outcomes of exposure by radiation or environmental mutagens. The molecular mechanism of the induced mutagenesis, which is one of the most important issues in this field, remains to be elucidated. A significant fraction of the induced mutation is generated through a cellular process, so-called DNA damage tolerance. In humans, two sub-pathways are regulated by ubiquitination of PCNA, one of the auxiliary factors of DNA replication; one is the error-prone pathway, translesion DNA synthesis, inducing point mutations, and the other is template switch, which is the error-free, in principle, but has a risk of genomic rearrangements. Therefore, the regulation of the choice of two pathways is a crucial step for the maintenance of genetic stability. In this study, we examined the key molecules involved in the PCNA ubiquitination and deubiquitination of ubiquitinated PCNA.

Academic Significance and Societal Importance of the Research Achievements

DNA損傷トレランスは紫外線などによるDNA損傷から生体を防御する分子機構であるが、一方で、変異誘発の原因となることから、厳密な制御下にあると考えられている。特にがん治療においては、抗がん剤への耐性や、変異誘発に関与することから、分子メカニズムの解明が求められている。DNA損傷トレランスには二つの分子機構が知られており、その二つの分子機構の選択は、紫外線やDNA損傷を誘発する抗がん剤に暴露した細胞の生死や遺伝子変異の誘発リスクを適切に制御する上でとても重要である。本研究成果は、紫外線や抗がん剤などによって誘発されるDNA損傷における生体応答を理解する上での知的基盤を与えるものである。

Report

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

    (21 results)

All 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (15 results) (of which Int'l Joint Research: 2 results) Remarks (2 results)

  • [Journal Article] Stepwise multipolyubiquitination of p53 by the E6AP-E6 ubiquitin ligase complex2019

    • Author(s)
      Masuda Y, Saeki Y, Arai N, Kawai H, Kukimoto I, Tanaka K, Masutani C.
    • Journal Title

      J Biol Chem

      Volume: 294 Issue: 41 Pages: 14860-14875

    • DOI

      10.1074/jbc.ra119.008374

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatiotemporal regulation of PCNA ubiquitination in damage tolerance pathways2019

    • Author(s)
      Masuda Y, Masutani C.
    • Journal Title

      Crit. Rev. Biochem. Mol. Biol.

      Volume: 54 Issue: 5 Pages: 418-442

    • DOI

      10.1080/10409238.2019.1687420

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preferential digestion of PCNA-ubiquitin and p53-ubiquitin linkages by USP7 to remove polyubiquitin chains from substrates2019

    • Author(s)
      Masuda Y, Kanao R, Kawai H, Kukimoto I, Masutani C.
    • Journal Title

      J Biol Chem.

      Volume: 294 Issue: 11 Pages: 4177-4187

    • DOI

      10.1074/jbc.ra118.005167

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regulation of HLTF-mediated PCNA polyubiquitination by RFC and PCNA monoubiquitination levels determines choice of damage tolerance pathway2018

    • Author(s)
      Masuda Yuji、Mitsuyuki Satoshi、Kanao Rie、Hishiki Asami、Hashimoto Hiroshi、Masutani Chikahide
    • Journal Title

      Nucleic Acids Research

      Volume: 46 Pages: 11340-11356

    • DOI

      10.1093/nar/gky943

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 脱塩基部位のDNA損傷トレランス経路に関するタンパク質因子群の生化学的解析2021

    • Author(s)
      杉本陽平、増田雄司、益谷央豪
    • Organizer
      日本遺伝学会93回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脱塩基部位-HMCESクロスリンクにおけるDNA損傷トレランス経路の生化学的解析2021

    • Author(s)
      杉本陽平、増田雄司、益谷央豪
    • Organizer
      第26回DNA複製・組換え・修復ワークショップ
    • Related Report
      2021 Annual Research Report
  • [Presentation] DNA損傷応答を制御するユビキチンリガーゼRFWD3の生化学的解析2021

    • Author(s)
      増田雄司、汪佳、益谷央豪
    • Organizer
      第26回DNA複製・組換え・修復ワークショップ
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脱塩基部位を標的として機能するタンパク質因子群のDNA損傷トレランス経路における役割2021

    • Author(s)
      杉本陽平、増田雄司、益谷央豪
    • Organizer
      日本環境変異原ゲノム学会 第50回記念大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ヒト損傷乗り越えDNAポリメラーゼηとPCNAとの相互作用2020

    • Author(s)
      増田雄司、益谷央豪
    • Organizer
      日本遺伝学会92回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ヒト細胞におけるDNAポリメラーゼ・イータの制御機構の解析2020

    • Author(s)
      金尾梨絵、増田雄司、益谷央豪
    • Organizer
      日本放射線影響学会第63回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ヒトUSP7によるユビキチン化PCNAの脱ユビキチン反応の特性2019

    • Author(s)
      増田雄司、 益谷央豪
    • Organizer
      変異機構研究会・第31回夏の学校
    • Related Report
      2019 Annual Research Report
  • [Presentation] ヒトUSP7によるユビキチン化PCNAの脱ユビキチン活性2019

    • Author(s)
      増田雄司、 益谷央豪
    • Organizer
      日本遺伝学会91回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] PCNAによるヒトDNAポリメラーゼηの活性促進2019

    • Author(s)
      増田雄司、 益谷央豪
    • Organizer
      第25回DNA複製・組換え・修復ワークショップ
    • Related Report
      2019 Annual Research Report
  • [Presentation] ヒトPCNAのユビキチンリガーゼHLTFの制御機構2019

    • Author(s)
      増田雄司、益谷央豪
    • Organizer
      日本放射線影響学会第62回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Regulation of mode of PCNA-polyubiquitination by HLTF to destine the damage tolerance pathway2018

    • Author(s)
      Yuji Masuda, Satisgu Mistuyuki, Chikahide Masutani
    • Organizer
      Gordon Research Conference on Mutagenesis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular basis of damage tolerance pathway choice: HLTF mediated PCNA polyubiquitination is regulated by RFC and PCNA monoubiquitination levels2018

    • Author(s)
      Yuji Masuda, Satoshi Mitsuyuki, Rie Kanao, Asami Hishiki, Hiroshi Hashimoto, Chikahide Masutani
    • Organizer
      3R & 3C Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] PCNAとの相互作用によるヒトDNAポリメラーゼηの制御機構2018

    • Author(s)
      増田雄司, 益谷央豪
    • Organizer
      日本放射線影響学会第61回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒトPCNAのポリユビキチン化の時空間的制御機構2018

    • Author(s)
      増田雄司, 益谷央豪
    • Organizer
      変異機構研究会・第31回夏の学校
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒトPCNAのポリユビキチン化酵素HLTFの生化学的解析2018

    • Author(s)
      増田雄司, 益谷央豪
    • Organizer
      日本遺伝学会90回大会
    • Related Report
      2018 Annual Research Report
  • [Remarks] 名古屋大学環境医学研究所

    • URL

      http://www.riem.nagoya-u.ac.jp

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report 2018 Annual Research Report
  • [Remarks] 名古屋大学環境医学研究所ゲノム動態制御分野

    • URL

      http://www.riem.nagoya-u.ac.jp/4/genome/home.html

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report 2018 Annual Research Report

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

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