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Elucidation of the carcinogenic mechanisms of bile duct cancer focusing on genetic mutations based on the site of occurrence.

Research Project

Project/Area Number 22K15528
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionKyoto University (2023)
Kobe University (2022)

Principal Investigator

Nishikawa Yoshihiro  京都大学, 医学研究科, 特定助教 (80802785)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords胆嚢癌 / 胆道癌 / ELF3
Outline of Research at the Start

胆道癌の予後不良な難治癌の一つであり、病態解明と新規治療法の開発が急務である。胆道癌の発生部位により遺伝子変異プロファイルが異なることが明らかにされているが、個々の遺伝子変異の胆道癌における役割は明らかとなっていない。本研究においては、胆道癌の発生部位の違いによる発癌メカニズムの違い、また胆嚢癌において高率に遺伝子変異を認めるELF3遺伝子がどのように発癌に関与するかの解明を試みる。

Outline of Final Research Achievements

We aimed to elucidate the role of ELF3 in gallbladder tumorigenesis using human samples, public data, mouse models, and organoids. It was revealed that ELF3 functions as a tumor suppressor, likely through the regulation of EREG and its downstream AKT/PI3K/mTORC1 pathway. Loss of ELF3 ultimately led to enhanced EMT, promoting tumor formation. Since the loss of ELF3 increases dependence on the AKT/PI3K/mTORC1 pathway, the inhibition of mTORC1 suppressed tumors, suggesting that mTORC1 could be a potential therapeutic target for ELF3-mutant gallbladder cancer.

Academic Significance and Societal Importance of the Research Achievements

胆道癌は予後不良な難治癌の一つであり、予後改善・新規治療薬の開発には、その病態解明が必須である。ELF3は胆嚢癌において21%に変異を認めるという報告があり、がん抑制性の役割を担っていると考えられていたものの、詳細は不明であった。本研究でその病態形成の詳細を明らかにすることが出来た。実際の新規治療法開発には更なる検討が必要と考えられる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (3 results)

All 2023 2022

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

  • [Journal Article] ELF3 suppresses gallbladder cancer development through downregulation of the EREG/EGFR/mTOR complex 1 signalling pathway.2023

    • Author(s)
      Nakamura T, Nishikawa Y, Shiokawa M, Takeda H, Yokode M, Matsumoto S, Muramoto Y, Ota S, Yoshida H, Okada H, Kuwada T, Marui S, Matsumori T, Maruno T, Uza N, Kodama Y, Hatano E, Seno H.
    • Journal Title

      J Pathol

      Volume: 261 Issue: 1 Pages: 28-42

    • DOI

      10.1002/path.6144

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ELF3 SUPPRESSES GALLBLADDER CANCER DEVELOPMENT THROUGH DOWNREGURATION OF EREG/EGFR/MTOR COMPLEX 1 SIGNALING PATHWAY2023

    • Author(s)
      NAKAMURA T, NISHIKAWA Y, SHIOKAWA M, UZA N, SENO H.
    • Organizer
      Digestive Disease Week 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ELF3はERBB/MTORC1 signaling cascadeを制御することで胆嚢癌の進展を抑制する2022

    • Author(s)
      中村 武晴, 西川 義浩, 塩川 雅広, 宇座 徳光, 妹尾 浩
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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