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Exploring the mechanism of a mitochondria redox-mediated chemical enhancement of cell death induced by radiation and hyperthermia, and its application for cancer therapy

Research Project

Project/Area Number 21K07614
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionUniversity of Toyama

Principal Investigator

Zhao Qing-Li  富山大学, 学術研究部医学系, 助教 (90313593)

Co-Investigator(Kenkyū-buntansha) 小川 良平  富山大学, 学術研究部医学系, 准教授 (60334736)
崔 正国  福井大学, 学術研究院医学系部門, 講師 (90572115)
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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords温熱 / 細胞死 / 放射線 / ROS
Outline of Research at the Start

放射線腫瘍学においてHIF-1を中心とする低酸素バイオロジーの重要性は顕著である。これまで、私たちはニトロキシドとハイパーサーミア併用により、細胞死を著しく増感することを確認し、さらに、その細胞死がオートファジー細胞死であることも見出した(Zhao, Apoptosis 2010)。また、そのオートファジー細胞死の誘導に、TP53INP1遺伝子 が関係することも示した(Zhao, SfRBM-2019)。本研究計画では臨床治療への応用のための検討を重視したい。すなわち、臨床治療近い実験方法で、細胞及び組織レベルの増感効果の検討を行い、それと同時にメカニズムの解明についての検討も実施する。

Outline of Final Research Achievements

Hyperthermia (HT) alone often falls short in inducing substantial cancer cell death. Here, we unveil Mito-Tempo as a potent thermosensitizer that amplifies cell death in human cervical cancer (HeLa cells). Co-treatment with MT (0.4 mM) and HT (42°C) significantly increased apoptosis. This combination heightened intracellular reactive oxygen species (ROS) generation while reducing mitochondrial membrane potential, culminating in elevated Bax expression and decreased Mcl-1, activating caspase-3. Concurrently, we observed autophagy alterations, marked by increased LC3-II and p62 expression. The combination inhibited autophagic flux and lysosomal function, evidenced by reduced LAMP-1 and Cathepsin D, and increased lysosomal pH. Notably, the apoptosis intensification with an autophagy inhibitor (Chloroquine; CQ) underscores the significance of autophagy disruption in this process. MT enhances HT-induced apoptosis in HeLa cells, implicating autophagy flux disruption as a key mechanism.

Academic Significance and Societal Importance of the Research Achievements

放射線、ハイパーサーミア癌治療においては、高精度照射技術が進み治療効果が向上しているが、治療抵抗性細胞(低酸素性細胞や癌幹細胞)の存在が新たな課題である。ミトコンドリアを標的とするニトロキシドであるMito-Tempoは温熱による細胞死増感の分子機構を解明することによる癌治療抵抗性機構の抑制および癌治療の成績を高めることができる。新たな癌治療法および癌治療薬開発への貢献が期待できる。

Report

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

    (7 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Vincamine Ameliorates Epithelial-Mesenchymal Transition in Bleomycin-Induced Pulmonary Fibrosis in Rats; Targeting TGF-β/MAPK/Snai1 Pathway2023

    • Author(s)
      Alaaeldin Rania、Mohyeldin Reham H.、Bekhit Amany Abdlrehim、Gomaa Wafaey、Zhao Qing-Li、Fathy Moustafa
    • Journal Title

      Molecules

      Volume: 28 Issue: 12 Pages: 4665-4665

    • DOI

      10.3390/molecules28124665

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Isofraxidin enhances hyperthermia-induced apoptosis via redox modification in acute monocytic leukemia U937 cells.2023

    • Author(s)
      Li P, Zhao QL, Rehman MU, Jawaid P, Cui ZG, Ahmed K, Kondo T, Saitoh JI, Noguchi K.
    • Journal Title

      Mol Med Rep.

      Volume: 27 Issue: 2 Pages: 41-41

    • DOI

      10.3892/mmr.2023.12928

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dual Topoisomerase I/II Inhibition-Induced Apoptosis and Necro-Apoptosis in Cancer Cells by a Novel Ciprofloxacin Derivative via RIPK1/RIPK3/MLKL Activation2022

    • Author(s)
      Alaaeldin Rania、Abdel-Rahman Islam M.、Ali Fares E. M.、Bekhit Amany Abdlrehim、Elhamadany Eyad Y.、Zhao Qing-Li、Cui Zheng-Guo、Fathy Moustafa
    • Journal Title

      Molecules

      Volume: 27 Issue: 22 Pages: 7993-7993

    • DOI

      10.3390/molecules27227993

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A New EGFR Inhibitor from Ficus benghalensis Exerted Potential Anti-Inflammatory Activity via Akt/PI3K Pathway Inhibition2022

    • Author(s)
      Alaaeldin Rania、Hassan Heba Ali、Abdel-Rahman Islam M.、Mohyeldin Reham H.、Youssef Nancy、Allam Ahmed E.、Abdelwahab Sayed F.、Zhao Qing-Li、Fathy Moustafa
    • Journal Title

      Current Issues in Molecular Biology

      Volume: 44 Issue: 7 Pages: 2967-2981

    • DOI

      10.3390/cimb44070205

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Carpachromene Ameliorates Insulin Resistance in HepG2 Cells via Modulating IR/IRS1/PI3k/Akt/GSK3/FoxO1 Pathway2021

    • Author(s)
      Alaaeldin Rania、Abdel-Rahman Iman A. M.、Hassan Heba Ali、Youssef Nancy、Allam Ahmed E.、Abdelwahab Sayed F.、Zhao Qing-Li、Fathy Moustafa
    • Journal Title

      Molecules

      Volume: 26 Issue: 24 Pages: 7629-7629

    • DOI

      10.3390/molecules26247629

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Mito-Tempoと温熱併用による細胞死増感効果の検討とその作用機序の解析2024

    • Author(s)
      黎 玉梅, 趙 慶利, 小川 良平, 水上 達治, 宋 昱, 崔 正国, 齋藤 淳一, 野口 京
    • Organizer
      第61回日本放射線腫瘍学会生物部会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Cell Death Sensitization by Mito-Tempo and Hyperthermia Treatment, and Exploration of Its Mechanisms2024

    • Author(s)
      黎 玉梅, 趙 慶利, 小川 良平, 水上 達治, 宋 昱, 崔 正国, 齋藤 淳一, 野口 京
    • Organizer
      第83回日本癌学会学術総会
    • Related Report
      2023 Annual Research Report

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

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