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Elucidation of the mechanisms by which novel vascular endothelial cell markers are involved in liver fibrosis and hepatocarcinogenesis

Research Project

Project/Area Number 21K07905
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionDepartment of Clinical Research, National Hospital Organization Kanazawa Medical Center

Principal Investigator

Nishikawa Masashi  独立行政法人国立病院機構(金沢医療センター臨床研究部), その他部局等, 研究員 (90794511)

Co-Investigator(Kenkyū-buntansha) 岡田 光  金沢大学, 医薬保健学総合研究科, 特任准教授 (50788916)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords新規血管内皮細胞マーカー / 肝線維化 / 肝発がん
Outline of Research at the Start

肝細胞癌の発癌基盤となる肝線維化病態に対する治療薬は未だ存在しておらず、肝線維化への進行に対する治療薬の研究基盤の開発は急務である。我々は、ヒト肝組織を用いたCpGメチル化網羅的解析から、肝線維化病態形成増悪に働く新規線維化因子TMEMを同定した。本研究では、門脈周囲のTMEM陽性血管内皮細胞が肝線維化病態形成に対してどのような生理的役割があるかを研究する。

Outline of Final Research Achievements

This study demonstrated that TMEM164 has an inhibitory effect on NASH-induced liver carcinogenesis.
Expression analysis and immunohistochemistry using liver tissue samples from NAFLD/NASH model mice revealed that the cells in which TMEM164 functions to suppress the progression of NASH pathology are liver endothelial cells, specifically liver infiltrating vascular endothelial cells derived from bone marrow cells in the context of liver fibrosis. The endothelial cells may attract inflammatory cells such as macrophages and CD8 T cells that cause hepatocarcinogenesis, and TMEM164 may suppress these cells.

Academic Significance and Societal Importance of the Research Achievements

これらの結果から、TMEM164は、世界で未だ報告がなく、申請者だけが初めて報告した独自のNASH-HCC病態における標的遺伝子になり得ることが明らかになった。TMEM164のあらたな生理機能の発見は、未だ治療薬がない肝線維化に対する薬剤の開発に貢献できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (3 results)

All 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Identification of a Transmembrane Protein Involved in Shear Stress Signaling and Hepatocarcinogenesis After a Sustained Virological Response to Hepatitis C Virus2023

    • Author(s)
      Nishikawa Masashi、Okada Hikari、Kawaguchi Kazunori、Shimakami Tetsuro、Nio Kouki、Arai Kuniaki、Yamashita Tatsuya、Sasaki Motoko、Kaneko Shuichi、Yamashita Taro、Honda Masao
    • Journal Title

      Cellular and Molecular Gastroenterology and Hepatology

      Volume: 16 Issue: 2 Pages: 263-286

    • DOI

      10.1016/j.jcmgh.2023.04.006

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] C 型肝炎ウイルス排除後の肝発癌と肝癌進展に寄与する機能未知膜貫通蛋白の同定2023

    • Author(s)
      西川昌志、本多政夫、山下太郎
    • Organizer
      第8回Gastro-PLUS
    • Related Report
      2023 Annual Research Report
  • [Presentation] C型肝炎ウイルス排除後の肝発癌と肝癌進展に寄与する機能未知膜貫通蛋白の同定2023

    • Author(s)
      西川昌志、岡田光、本多政夫
    • Organizer
      第109回日本消化器病学会総会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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