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Analysis of the mechanism of enhancement of metastasis by pathogenic mitochondrial DNA mutation.

Research Project

Project/Area Number 19K07654
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionChiba Cancer Center (Research Institute)

Principal Investigator

TAKENAGA Keizo  千葉県がんセンター(研究所), がん先進治療開発研究室, 特任研究員 (80260256)

Co-Investigator(Kenkyū-buntansha) 越川 信子  千葉県がんセンター(研究所), がん遺伝創薬研究室, 主任上席研究員 (90260249)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsミトコンドリアDNA / 細胞外小胞 / 細胞間移行 / 転移 / トンネルナノチューブ / ミトコンドリア / マイトファジー / 腫瘍内微小環境 / 病因生変異
Outline of Research at the Start

1)マウスおよびヒト高転移性がん細胞株中に存在するミトコンドリアDNA(mtDNA)にコードされるND遺伝子の病因性変異が細胞外小胞に内包され放出された後、野生型mtDNAを有する低転移性細胞に伝搬され複製されることで高転移性を賦与する可能性、2)ヒトがん組織中mtDNA変異のうちで、ND1遺伝子中のSNPであるG3394CとC3497Tが遠隔転移と関連する可能性を検討することを目的とする。

Outline of Final Research Achievements

Mitochondria containing metastasis-enhancing pathogenic mtDNA in mouse high-metastatic lung tumor cells were transferred to low-metastatic cells and stromal cells via extracellular vesicles (EVs) in vitro and in the tumor microenvironment. Among the subpopulations of EVs, the small-EV fraction contained mutant mtDNA and mitochondrial proteins. On the other hand, co-culture of human mtDNA deficient ρ0cells with a human cancer cell line with mtDNA mutations resulted in the appearance of a small number of ρ0cell colonies with increased copy number of the said mutant mtDNA. Some of the ρ0cells, depending on the nature of the transferred mtDNA mutations, showed enhanced cell motility. These results infer an enhancement of metastatic potential by mutant mtDNA intercellular transfer during tumor progression.

Academic Significance and Societal Importance of the Research Achievements

細胞外小胞を介した転移促進性変異mtDNAの低転移性細胞への伝搬は、低転移性細胞に高転移性を賦与する可能性があり、創薬、治療、転移予測の面から様々な展開を促す可能性がある。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2019

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results)

  • [Journal Article] Suppression of NSCLC A549 tumor growth by a mtDNA mutation‐targeting pyrrole‐imidazole polyamide‐TPP and a senolytic drug2022

    • Author(s)
      Tsuji Kohei、Kida Yuki、Koshikawa Nobuko、Yamamoto Seigi、Shinozaki Yoshinao、Watanabe Takayoshi、Lin Jason、Nagase Hiroki、Takenaga Keizo
    • Journal Title

      Cancer Science

      Volume: - Issue: 4 Pages: 1321-1337

    • DOI

      10.1111/cas.15290

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anticancer effect of a pyrrole‐imidazole polyamide‐triphenylphosphonium conjugate selectively targeting a common mitochondrial DNA cancer risk variant in cervical cancer cells2022

    • Author(s)
      Yao Jihang、Takenaga Keizo、Koshikawa Nobuko、Kida Yuki、Lin Jason、Watanabe Takayoshi、Maru Yoshiaki、Hippo Yoshitaka、Yamamoto Seigi、Zhu Yuyan、Nagase Hiroki
    • Journal Title

      International Journal of Cancer

      Volume: 152 Issue: 5 Pages: 962-976

    • DOI

      10.1002/ijc.34319

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Intercellular transfer of mitochondrial DNA carrying metastasis-enhancing pathogenic mutations from high- to low-metastatic tumor cells and stromal cells via extracellular vesicles2021

    • Author(s)
      Takenaga Keizo、Koshikawa Nobuko、Nagase Hiroki
    • Journal Title

      BMC Molecular and Cell Biology

      Volume: 22 Issue: 1 Pages: 1-16

    • DOI

      10.1186/s12860-021-00391-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mitochondria: Endosymbiont bacteria DNA sequence as a target against cancer2021

    • Author(s)
      Nagase Hiroki、Watanabe Takayoshi、Koshikawa Nobuko、Yamamoto Seigi、Takenaga Keizo、Lin Jason
    • Journal Title

      Cancer Science

      Volume: 112 Issue: 12 Pages: 4834-4843

    • DOI

      10.1111/cas.15143

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Growth inhibition of cancer cells by TPP-conjugated DNA gyrase inhibitors through suppression of mtDNA replication2023

    • Author(s)
      喬 昱銘、木田 裕貴、越川 信子、竹永 啓三
    • Organizer
      第36回国際哺乳類ゲノム会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] TPP結合DNAジャイレース阻害剤によるmtDNA複製阻害を介したがん細胞の増殖阻害2022

    • Author(s)
      喬 昱銘、木田 裕貴、越川 信子、竹永 啓三
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] がん細胞が遊離する細胞外小胞にはミトコンドリアDNAが包含される2019

    • Author(s)
      竹永啓三、越川信子、永瀬浩喜
    • Organizer
      第78回日本癌学会学術総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 細胞外小胞を介した細胞間ミトコンドリアDNA移行2019

    • Author(s)
      竹永啓三、越川信子、永瀬浩喜
    • Organizer
      第17回がんとハイポキシア研究会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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