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Studies on the molecular mechanisms to regulate the resumption of stalled replication by translesion synthesis at DNA damage sites

Research Project

Project/Area Number 17K00551
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Risk sciences of radiation and chemicals
Research InstitutionKobe University

Principal Investigator

YOKOI MASAYUKI  神戸大学, バイオシグナル総合研究センター, 准教授 (00322701)

Co-Investigator(Kenkyū-buntansha) 花岡 文雄  学習院大学, 理学部, 研究員 (50012670)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords損傷乗り越え合成 / 染色体複製 / DNA損傷 / クロマチン / 脱ユビキチン / 染色体複製阻害 / クロマチンリモデリング / 翻訳後修飾 / クロマチン構造変換
Outline of Final Research Achievements

The aim of this research is to elucidate the fundamental mechanism(s) which is important for the resumption of stalled DNA replication by translesion synthesis (TLS) at DNA damage sites. DNA replication arrest at DNA lesion induces post-translational modifications (PTM) of TLS factor(s) such as replication accessary protein PCNA and/or TLS polymerase(s) on chromatin. In order to clarify how TLS governs and controls the resumption of chromosomal replication stalled at the DNA damage on chromatin, the effects of PTM on the function of TLS factors and its relation on chromatin organization were studied. As a result of analysis, new discoveries regarding the stability control of TLS polymerase, the relation of TLS and chromatin organization, and small molecules which inhibit TLS polymerase were obtained.

Academic Significance and Societal Importance of the Research Achievements

本研究課題で得られた成果は、紫外線や化学物質などの環境由来の原因で生じたDNA損傷が原因で停滞した染色体複製の再開を担うTLS機構の統括・制御機構を明らかにする上で重要な知見である。この他、生細胞イメージングの数値解析で用いたソフトを独自にプログラミングするなど技術的なオリジナリティも高く、さらに、POLHを標的とした創薬につながる新たな発見もあったことなどから、当該研究分野の発展に対する貢献が大いに期待できる点で学術的に意義がある。また、環境リスク評価やがん治療などへの幅広い展開も期待でき、これらは社会的ニーズと関心が高い点で社会的意義があると言える。

Report

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

    (20 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (19 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Hypersensitivity of mouse embryonic fibroblast cells defective for DNA polymerases η, ι and κ to various genotoxic compounds: Its potential for application in chemical genotoxic screening2018

    • Author(s)
      Akagi Jun-ichi、Yokoi Masayuki、Cho Young-Man、Toyoda Takeshi、Ohmori Haruo、Hanaoka Fumio、Ogawa Kumiko
    • Journal Title

      DNA Repair

      Volume: 61 Pages: 76-85

    • DOI

      10.1016/j.dnarep.2017.11.006

    • NAID

      120006456929

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Dynamics of FANCD2 in response to lipid metabolism2019

    • Author(s)
      Yukie Otsuki, Motonari Goto, Megumi Inui, Masayuki Yokoi, Kaoru Sugasawa, Wataru Sakai
    • Organizer
      2019 Fanconi Anemia Scientific Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヌクレオチド除去修復におけるDNA損傷認識を制御するクロマチン構造動態2019

    • Author(s)
      日下部将之, 栗原文佳, 草尾佳那子, 横井雅幸, 酒井 恒, 菅澤 薫
    • Organizer
      第6回アジア環境変異学会・日本環境変異学会第48回大会 合同大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ヌクレオチド除去修復の損傷認識を制御するクロマチン構造変換因子の探索2019

    • Author(s)
      草尾佳那子, 日下部将之, 各務恵理菜, 栗原文佳, 前田拓海, 横井雅幸, 酒井 恒, 菅澤 薫
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] XPCタンパク質によるDNA損傷認識の制御とヒストン修飾の役割2019

    • Author(s)
      栗原文佳, 日下部将之, 各務恵理菜, 草尾佳那子, 前田拓海, 横井雅幸, 酒井 恒, 菅澤 薫
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] TLSポリメラーゼの損傷部位への導入過程を生細胞イメージングにより解析する試み2019

    • Author(s)
      福永 匠, 尾崎未羽, 佐藤正康, 酒井 恒, 菅澤 薫, 花岡文雄, 横井雅幸
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] DNAポリメラーゼ・イータと脱ユビキチン化酵素の相互作用の解析2019

    • Author(s)
      案済 萌, 西村 潤, 菅野新一郎, 安井 明, 酒井 恒, 菅澤 薫, 花岡文雄, 横井雅幸
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ファンコニ貧血タンパク質FANCD2と脂質代謝関連因子の機能的連関の解析2019

    • Author(s)
      大槻侑恵, 後藤元成, 乾 愛実, 松田 俊, 松田知成, 横井雅幸, 菅澤 薫, 酒井 恒
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脂質代謝に応答したファンコニ貧血タンパク質のダイナミクス2019

    • Author(s)
      酒井 恒, 乾 愛実, 大槻侑恵, 後藤元成, 横井雅幸, 菅澤 薫
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] RNAを介したヌクレオチド除去修復制御機構の解析2019

    • Author(s)
      古川真理, 日下部将之, 酒井 恒, 横井雅幸, 菅澤 薫
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] N7-グリシドアミドdG付加体により誘発されるDNA複製阻害と変異原性の解析2019

    • Author(s)
      赤木純一, 横井雅幸, Young-Man Cho, 岩井成憲, 花岡文雄, 菅澤 薫, 小川久美子
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アクリルアミドの活性代謝物であるグリシルアミドのデオキシグアノシンN7位付加体はDNA複製阻害と点突然変異を誘発する2019

    • Author(s)
      赤木純一, 横井雅幸, Young-Man Cho, 岩井成憲, 花岡文雄, 菅澤 薫, 小川久美子
    • Organizer
      日本薬学会第140年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effect of Polκ deficiency on benzo[a]pyrene-induced tumorigenesis2018

    • Author(s)
      Akagi, J., Cho, Y-M., Toyoda, T., Yokoi, M., Hanaoka, F., Ohmori, H., Ogawa, K.
    • Organizer
      The 5th DNA polymerase meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Translesion synthesis-associated chromatin remodeling factors contribute the function of human DNA polymerase η in cisplatin-treated cells2018

    • Author(s)
      Yokoi, M., Shikaya, Y., Sugasawa, K., Hanaoka, F.
    • Organizer
      The 11th 3R+3C Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Benzo[a]pyrene-induced tumorigenesis in Polκ-knockout mice2018

    • Author(s)
      Akagi, J., Cho, Y-M., Toyoda, T., Yokoi, M., Hanaoka, F., Ohmori, H., Ogawa, K.
    • Organizer
      The 11th 3R+3C Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of interaction between DNA polymerase η and deubiquitinating enzyme2018

    • Author(s)
      案済萌、西村潤、菅野新一郎、安井明、菅澤薫、花岡文雄、横井雅幸
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] N7-glycidamide-dG adduct inhibits DNA replication in mammalian cells2018

    • Author(s)
      Akagi, J., Yokoi, M., Cho, Y-M., Yamamoto, J., Mizuta, Y., Iwai, S., Hanaoka, F., Ogawa, K.
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] DNA損傷による複製の停止を回避する機構とその制御2018

    • Author(s)
      横井雅幸
    • Organizer
      神戸大学第6回バイオシグナル研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Analysis of contribution of Polκ to benzo[a]pyrene-induced tumorigenesis2018

    • Author(s)
      Akagi, J., Cho, Y-M., Toyoda, T., Mizuta, Y., Yokoi, M., Hanaoka, F., Ohmori, H., Ogawa, K.
    • Organizer
      日本薬学会第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Contribution of Polκ to tumorigenesis in the forestomach of benzo[a]pyrene-fed mice2017

    • Author(s)
      Akagi, J., Cho, Y-M., Toyoda, T., Mizuta, Y., Yokoi, M., Hanaoka, F., Ohmori, H., Ogawa, K.
    • Organizer
      ComBio2017
    • Related Report
      2017 Research-status Report

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

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