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Development of the therapy targeted to the vulnerability of SMARCA4-mutant lung cancer cells to ferroptosis

Research Project

Project/Area Number 21K19417
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 50:Oncology and related fields
Research InstitutionKeio University

Principal Investigator

Nagano Osamu  慶應義塾大学, 医学部(信濃町), 准教授 (30404346)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
KeywordsSMARCA4 / フェロトーシス / CASP8 / p62 / 肺癌 / 細胞死 / 小細胞肺癌
Outline of Research at the Start

SMARCA4のノックアウト細胞は、フェロトーシス抵抗性に関わる元素であるセレンの代謝変化が生じることでフェロトーシス感受性となり、酸化的細胞障害によって生じる細胞死のベクトルがアポトーシスからフェロトーシスへ変化することが分かった。そこで本研究は、アポトーシスとフェロトーシスの相互排他的関係性を解明し、予後不良なSMARCA4変異がんのフェロトーシス脆弱性を標的とした治療法の開発を目指す。とくに、それぞれの細胞死に対するがん細胞の感受性がSMARCA4を軸に「トレードオフ」の関係になっていることに着目し、その間にある分子機構を明らかにしていく。

Outline of Final Research Achievements

To elucidate the regulatory mechanisms of ferroptosis and apoptosis and to develop novel therapies targeting the vulnerability of SMARCA4 mutant cancer cells to ferroptosis, we established cell lines stably expressing SMARCA4, performed ATAC-seq analysis, and extracted from public databases the genes that were highly expressed in ferroptosis -resistant cells. Among the genes obtained, only the genes highly expressed in ferroptosis -resistant cells were extracted from public databases, and new ferroptosis resistance candidate genes, SMYD3, LTBR, and PFKP, were identified. We also found that the expression status of the CASP8 gene regulates the stability of the p62/SQSTM1 protein, which promotes the activation of antioxidant signaling in cancer cells and could be a promising ferroptosis susceptibility marker.

Academic Significance and Societal Importance of the Research Achievements

細胞死に対する抵抗性を促進する分子メカニズムの理解は効果的ながん治療を開発するにあたり、非常に重要である。本研究によるフェロトーシス誘導治療法の開発は、SMARCA4変異がんの臓器横断的な治療法として臨床応用に発展するインパクトを持ち、治療抵抗性がんの特徴でもあるアポトーシス抵抗性に対抗する治療戦略にとしての新たな一手となることが期待される。SMARCA4変異症例の不良な予後はアポトーシス抵抗性によることが考えられるが、本研究によるフェロトーシス誘導治療法の開発は、SMARCA4変異がんの革新的治療法として臨床応用に発展するインパクトを持つことが期待される。

Report

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

    (7 results)

All 2022 2021

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

  • [Journal Article] MEK inhibition suppresses metastatic progression of <i>KRAS</i> ‐mutated gastric cancer2022

    • Author(s)
      Yamasaki Juntaro、Hirata Yuki、Otsuki Yuji、Suina Kentaro、Saito Yoshiyuki、Masuda Kenta、Okazaki Shogo、Ishimoto Takatsugu、Saya Hideyuki、Nagano Osamu
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 3 Pages: 916-925

    • DOI

      10.1111/cas.15244

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Presence of spontaneous epithelial-mesenchymal plasticity in esophageal cancer2022

    • Author(s)
      Tsuchihashi Kenji、Hirata Yuki、Yamasaki Juntaro、Suina Kentaro、Tanoue Kenro、Yae Toshifumi、Masuda Kenta、Baba Eishi、Akashi Koichi、Kitagawa Yuko、Saya Hideyuki、Nagano Osamu
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 30 Pages: 101246-101246

    • DOI

      10.1016/j.bbrep.2022.101246

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] がん転移におけるフェロトーシス抵抗性2022

    • Author(s)
      永野修
    • Organizer
      第31回日本がん転移学会学術集会・総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] シスチントランスポーターxCTとALDHを標的とした新しいがん治療2022

    • Author(s)
      永野修
    • Organizer
      日本薬物動態学会第37回年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Development of cancer therapy by simultaneous targeting of cystine-glutamate antiporter xCT and aldehyde dehydrogenase2022

    • Author(s)
      Osamu Nagano
    • Organizer
      The Cold Spring Harbor Asia conference on Iron, Reactive Oxygen Species & Ferroptosis in Life, Death & Disease, AWAJI, JAPAN
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel approach for cancer therapy by simultaneous targeting of xCT-dependent cystine transport and aldehyde dehydrogenase activity2022

    • Author(s)
      Osamu Nagano
    • Organizer
      Redox Week in Sendai 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Therapeutic targeting of redox system in cancer stem cells2021

    • Author(s)
      永野修
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-07-13   Modified: 2024-01-30  

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