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Mechanism of HSCs maintenace by deubiquitinating enzyme USP10

Research Project

Project/Area Number 18K08340
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionKanazawa Medical University

Principal Investigator

HIGUCHI Masaya  金沢医科大学, 医学部, 教授 (50334678)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords脱ユビキチン化 / USP10 / DNA修復 / 相同組み換え修復 / DNA-PKcs / PP6 / 造血幹細胞 / 相同組換え修復 / 脱ユビキチン化酵素
Outline of Final Research Achievements

USP10 is an essential deubiquitinase for haematopoietic stem cells (HSCs) maintenance. Since HSCs maintenance relies on proper DNA damage response (DDR), we investigated whether USP10 is involved in DDR. USP10 KO cells showed impaired DNA double strand break (DSB) repair, which is attributed to impaired homologous recombination (HR) repair. In USP10 KO cells, DNA-PKcs is hyperactivated, and inhibition of DNA-PKcs restored the DSB repair. Thus, USP10 properly regulates DNA-PKcs activity after DSB, contributing to HR repair and HSCs maintenance.

Academic Significance and Societal Importance of the Research Achievements

USP10はDNA-PKの活性制御を行い、DSBのHRによる修復を促進しているという新しい知見を得た。USP10はこの作用によりHSCの維持に寄与していることが示唆された。この結果からUSP10は原因不明の貧血の原因遺伝子である可能性も考えられる。さらにUSP10阻害剤はがんに対する抗がん剤や放射線治療の効果を高めることが期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2022 2019

All Presentation (2 results)

  • [Presentation] 脱ユビキチン化酵素USP10によるDNA損傷修復経路の制御2022

    • Author(s)
      宇谷公一、逆井良、岩淵邦芳、樋口雅也
    • Organizer
      第81回日本癌学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 脱ユビキチン化酵素USP10によるDNA損傷応答制御2019

    • Author(s)
      宇谷公一、逆井良、岩淵邦芳、樋口雅也
    • Organizer
      第78回日本癌学会学術総会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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