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Innovative mitochondrial-targeted gene therapy for hepatocellular carcinoma

Research Project

Project/Area Number 21K15515
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Onda Shinji  東京慈恵会医科大学, 医学部, 講師 (10459620)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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オートファジー / マイトファジー / ライソゾーム / 酸性βグルコシダーゼ / ミトコンドリア代謝 / ライソゾーム酵素 / 肝細胞癌 / スフィンゴ脂質代謝
Outline of Research at the Start

肝細胞癌は乏しい栄養血管による低酸素低栄養環境にも関わらず、腫瘍の発育・浸潤転移がみられるが、そのメカニズムに関しては、近年のゲノム解析や免疫学的解析の進歩にも関わらず十分に解明されていない。我々は、細胞内オルガネラのリサイクル機構であるオートファジーの最終段階であるミトコンドリア代謝の特にライソゾーム代謝に注目し、肝細胞癌の発育・進展におけるミトコンドリア代謝の分子メカニズムを明らかにし、肝細胞癌に対する新たな治療戦略の確立を目指す。

Outline of Final Research Achievements

We analyzed the function of acid β-glucosidase in hepatocellular carcinoma. In a human hepatocellular carcinoma cell line, PARK9 reduced the expression level of PARK9 protein and inhibited cell proliferation, invasion and migration ability. Mitochondrial accumulation was also confirmed by electron microscopy. We also confirmed a decrease in mitochondrial membrane potential and mitophagy activity, a mitochondrial-selective autophagy. Accumulation of iron, lipid peroxidation, and ROS in mitochondria was confirmed by flow cytometry and fluorescence microscopy.
In human hepatocellular carcinoma cell lines, inhibition of PARK9 activity induces mitochondrial dysfunction, resulting in abnormal iron metabolism, which in turn induces ferotosis.

Academic Significance and Societal Importance of the Research Achievements

今後はさらにPARK9と薬剤耐性の関与に関して、肝細胞癌に対する分子標的治療薬であるレンバチニブの投与下で、薬剤のPARK9タンパク質発現量を評価する。最終的に、PARK9をノックダウンしたレンバチニブ耐性肝細胞癌細胞株において、レンバチニブの耐性を克服することを確認する。

Report

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

    (3 results)

All 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results)

  • [Journal Article] Novel combined fibrosis-based index predicts the long-term outcomes of hepatocellular carcinoma after hepatic resection2022

    • Author(s)
      Yanagaki Mitsuru、Shirai Yoshihiro、Hamura Ryoga、Taniai Tomohiko、Tanji Yoshiaki、Haruki Koichiro、Furukawa Kenei、Onda Shinji、Shiba Hiroaki、Ikegami Toru
    • Journal Title

      International Journal of Clinical Oncology

      Volume: 27 Issue: 4 Pages: 717-728

    • DOI

      10.1007/s10147-021-02111-7

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Significance of intra/postoperative prognostic scoring system in hepatectomy for colorectal liver metastasis2021

    • Author(s)
      Furukawa K, Onda S, Yanagaki M, Taniai T, Hamura R, Haruki K, Shirai Y, Tsunematsu M, Sakamoto T, Ikegami T
    • Journal Title

      Ann Gastroenterol Surg

      Volume: 6 Issue: 1 Pages: 159-168

    • DOI

      10.1002/ags3.12507

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The significance of the rapid turnover protein score as a predictor of the long-term outcomes in hepatocellular carcinoma after hepatic resection2021

    • Author(s)
      Yanagaki M, Haruki K, Yasuda J, Furukawa K, Onda S, Tsunematsu M, Shirai Y, Gocho T, Taniai T, Hamura R, Ikegami T.
    • Journal Title

      Ann Surg Oncol

      Volume: 28 Issue: 13 Pages: 8130-9

    • DOI

      10.1245/s10434-021-10704-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research

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

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