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Elucidation of novel high grade transformation mechanism in oral cancer via DNA damage driven "Cancer cannibalism"

Research Project

Project/Area Number 22K19630
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 57:Oral science and related fields
Research InstitutionThe University of Tokushima

Principal Investigator

TSUNEMATSU Takaaki  徳島大学, 大学院医歯薬学研究部(歯学域), 准教授 (70726752)

Co-Investigator(Kenkyū-buntansha) 森岡 翔  岐阜大学, 高等研究院, 客員教授 (60870029)
Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsがんの共食い / DNA損傷 / 共食い / 口腔がん
Outline of Research at the Start

本研究では、高悪性度のがんの病理組織標本において死んだがん細胞が周囲の他のがん細胞によって貪食される現象”がんの共食い”が高頻度に認められることに着目して、この現象が高悪性度のがんの病態にどのように影響を与えているのかを明らかにすることを目的として研究を行う。特に本研究では、申請者らが新たに見出したがん細胞に抗がん剤などのDNA損傷を誘導するような環境で貪食が活性化することに着目する。本研究は、治療の難しい高悪性度のがんに対する新たな治療戦略が確立できる可能性を有する挑戦的な研究課題である。

Outline of Final Research Achievements

It is well known that dead cells are removed by professional phagocytes such as Macrophage and Dendritic cells. Whereas the engulfment of dead cancer cells by cancer cells, which can be non-professional phagocytes, is frequently observed in high grade tumors. This phenomenon is classified as a type of “Cancer cell cannibalism”. However, their biological significance and molecular mechanism largely haven’t been understood. Therefore, we established the quantitative in vitro experiment for evaluation of dead cells engulfment and explored for its regulators. Interestingly, we identified that DNA damage promoted dead cells engulfment. In addition, we also found that ATM-Chk1 pathway was important for this phenotype. Overall, our results suggested that the novel molecular mechanism of “Cancer cell cannibalism” .

Academic Significance and Societal Importance of the Research Achievements

近年、口腔がんを含めた頭頸部扁平上皮癌の全ゲノム解析がなされたものの、分子標的治療の進む他臓器のがんと異なりドライバー変異がないことが明らかとなっており、がんの免疫回避機構を標的とした免疫チェックポイント阻害薬のようにドライバー変異とは異なる観点からのがん治療法の開発が今後益々必要となってくると考えられる。つまり、新しい観点からがんの生物学を切り拓く可能性を有する“がんの共食い”は高悪性度腫瘍の治療ターゲットとして新たなブレイクスルーを生み出すポテンシャルを有していると考えられる。本研究成果で得られた“がんの共食い”の分子機構の一端を基に新しい観点からのがんの理解が進むと考えられる。

Report

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

    (12 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (7 results)

  • [Int'l Joint Research] University of Virginia(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] The noncanonical function of borealin, a component of chromosome passenger complex, promotes glycolysis via stabilization of survivin in squamous cell carcinoma cells2024

    • Author(s)
      Tawara Hiroaki、Tsunematsu Takaaki、Kitajima Shojiro、Nagao Ruka、Matsuzawa Shigefumi、Otsuka Kunihiro、Ushio Aya、Ishimaru Naozumi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 706 Pages: 149741-149741

    • DOI

      10.1016/j.bbrc.2024.149741

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of the OTUB1‐YAP1 axis in driving malignant behaviors of head and neck squamous cell carcinoma2023

    • Author(s)
      Jin Shengjian、Tsunematsu Takaaki、Horiguchi Taigo、Mouri Yasuhiro、Shao Wenhua、Miyoshi Keiko、Hagita Hiroko、Sarubo Motoharu、Fujiwara Natsumi、Qi Guangying、Ishimaru Naozumi、Kudo Yasusei
    • Journal Title

      Cancer Medicine

      Volume: 12 Issue: 24 Pages: 22156-22169

    • DOI

      10.1002/cam4.6735

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cancer cell‐derived novel periostin isoform promotes invasion in head and neck squamous cell carcinoma2023

    • Author(s)
      Wenhua Shao、Tsunematsu Takaaki、Umeda Masaaki、Tawara Hiroaki、Fujiwara Natsumi、Mouri Yasuhiro、Arakaki Rieko、Ishimaru Naozumi、Kudo Yasusei
    • Journal Title

      Cancer Medicine

      Volume: - Issue: 7 Pages: 8510-8525

    • DOI

      10.1002/cam4.5601

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exposure to Multiwall Carbon Nanotubes Promotes Fibrous Proliferation by Production of Matrix Metalloproteinase-12 via NF-κB Activation in Chronic Peritonitis2022

    • Author(s)
      Tsunematsu Takaaki、Arakaki Rieko、Sato Mami、Saito Masako、Otsuka Kunihiro、Furukawa Yusuke、Taquahashi Yuhji、Kanno Jun、Ishimaru Naozumi
    • Journal Title

      The American Journal of Pathology

      Volume: 192 Issue: 11 Pages: 1559-1572

    • DOI

      10.1016/j.ajpath.2022.07.009

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] The molecular mechanism of “Cancer cell cannibalism” and its significance in cancer progression2024

    • Author(s)
      Takaaki Tsunematsu, Ruka Nagao, Shigefumi Matsuzawa, Kunihiro Otsuka, Aya Ushio, Naozumi Ishimaru
    • Organizer
      第52回日本免疫学会総会・学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DNA損傷シグナルによって誘導されるがん細胞の新たな機能とその分子機構2023

    • Author(s)
      常松 貴明、俵 宏彰、佐藤 真美、福田 一稀、大塚 邦紘、牛尾 綾、石丸 直澄
    • Organizer
      第112回日本病理学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] “がんの共食い”の分子機構とその生物学的意義の解明2023

    • Author(s)
      常松 貴明、石丸 直澄
    • Organizer
      第40回分子病理学研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] “がんの共食い“の分子機構とその生物学的意義の解明2023

    • Author(s)
      常松貴明、石丸直澄
    • Organizer
      2023年度徳島大学先端酵素学研究所シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] DNA損傷シグナルによってがん細胞が獲得する新たな機能2023

    • Author(s)
      常松貴明、俵宏彰、石丸直澄
    • Organizer
      第59回日本口腔組織培養学会総会・学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Cell Cycle machinery unravels the molecular mechanism of Cancer cell cannibalism2022

    • Author(s)
      Takaaki Tsunematsu, Naozumi Ishimaru
    • Organizer
      第45回日本分子生物学学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Exposure to Multi-Wall Carbon Nanotubes Promotes Fibrous Proliferation by Production of Matrix Metalloproteinase-12 via NF-κB Activation in Chronic Peritonitis2022

    • Author(s)
      Takaaki Tsunematsu, Rieko Arakaki, Mami Satoh, Kunihiro Otsuka, Naozumi Ishimaru
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Research-status Report

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Published: 2022-07-05   Modified: 2025-01-30  

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