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Role of oxidative stress response in cholangiocarcinoma

Research Project

Project/Area Number 17K09452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Gastroenterology
Research InstitutionTohoku University

Principal Investigator

Hamada Shin  東北大学, 医学系研究科, 助教 (20451560)

Co-Investigator(Kenkyū-buntansha) 正宗 淳  東北大学, 医学系研究科, 教授 (90312579)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords胆管癌 / Keap1 / 酸化ストレス
Outline of Final Research Achievements

We crossed Alb-Cre mouse, LSL-Kras G12D mouse and LSL-p53 R172H mouse to generate mutant Kras/p53 expressing mouse. We further introduced Keap1 floxed background into this mouse, leading to the constitutive activation of Nrf2. As a result, addition of Keap1 deletion promoted cholangiocarcinoma development, with increased expression of Nrf2 target genes.

Academic Significance and Societal Importance of the Research Achievements

本研究により、酸化ストレス応答機構の活性化は胆管発癌を促進することが明らかになった。ヒト胆管癌組織においてもKeap1欠損とNrf2標的分子の発現増加が併存する一群がみられ、胆管癌発癌過程への寄与が考えられる結果であった。
胆管癌の進展に寄与する分子機構は新たな治療標的となる可能性があり、Nrf2阻害による胆管癌治療の可能性を示唆する結果が得られたものと思われる。

Report

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

    (2 results)

All 2020 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Keap1 deletion accelerates mutant K-ras/p53-driven cholangiocarcinoma.2020

    • Author(s)
      Nabeshima T, Hamada S, Taguchi K, Tanaka Y, Matsumoto R, Yamamoto M, Masamune A.
    • Journal Title

      Am J Physiol Gastrointest Liver Physiol.

      Volume: 318

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Elucidating the link between collagen and pancreatic cancer: what’s next?2018

    • Author(s)
      Hamada Shin、Masamune Atsushi
    • Journal Title

      Expert Rev Gastroenterol Hepatol.

      Volume: 12 Issue: 4 Pages: 315-317

    • DOI

      10.1080/17474124.2018.1448268

    • Related Report
      2017 Research-status Report
    • Peer Reviewed

URL: 

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

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