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Elucidating molecular mechanisms of anti-cancer drug resistance of EGFR mutation-positive lung cancer by using single-cell technology

Research Project

Project/Area Number 20K16370
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionJapanese Foundation for Cancer Research

Principal Investigator

SETO Yosuke  公益財団法人がん研究会, がん化学療法センター 基礎研究部, 研究員 (50738614)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsシングルセル解析 / 薬剤耐性 / 肺がん / シングルセル
Outline of Research at the Start

EGFR活性型変異陽性肺がんの治療において、EGFRを標的とした分子標的薬は劇的な腫瘍縮小と生存期間の延長をもたらしてきたが、治療数年ほどでT790MやC797Sといった薬剤耐性変異が出現することが大きな問題となっている。このような耐性変異には、腫瘍不均一性として治療前から存在するものや治療過程で新たに獲得されるものがあり、突然変異率にはエピジェネティックなゲノム修飾が関与していることが示唆されている。以上から、本研究では、エピジェネティックな遺伝子発現調整の変化と突然変異パターンの相関をシングルセルレベルで調べることで、薬剤耐性変異獲得の分子メカニズムを解明することを目指す。

Outline of Final Research Achievements

EGFR molecular-targeted drugs (EGFR-Tyrosine Kinase Inhibitor (TKI)) are treated for activating EGFR mutation-positive non-small cell lung cancers (NSCLCs). However, acquired resistance after initial clinical response is widely observed. To elucidate mechanisms of emergence of the drug resistance against EGFR-TKI, we conducted single-cell (sc) RNA-seq, scATAC-seq using EGFR mutation-positive NSCLC patient-derived cancer cells (PDCs). In this study, we found that NF-kappa B mediated inflammatory response may play an important role in survival under EGFR-TKI treatment. We further found tumor heterogeneity in the PDC populations and T790M resistance mutation-positive PDC-specific nucleotide substitution pattern (e.g. higher C-to-T mutation). These results suggested that the mutational pattern was changed during the process of the emergence of drug-resistance mutation.

Academic Significance and Societal Importance of the Research Achievements

肺がんにおける分子標的薬を用いた治療は劇的な治療効果をもたらすが、治療数年内に薬剤耐性変異の出現がおこることが臨床上大きな問題となっている。しかしながら、耐性変異獲得に至るがん進化メカニズムはほとんど明らかとなっていない。本研究により、治療前がん細胞集団から薬剤耐性変異獲得の過程で塩基置換パターンが変化することやその変化にかかわる可能性のある遺伝子の発現、さらに、耐性変異獲得前のがん細胞では、薬剤存在下での生存に炎症応答が関与していること示唆され、がん進化プロセスを理解する上で重要な知見を得た。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 Other

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (3 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Soluble PD-L1 works as a decoy in lung cancer immunotherapy via alternative polyadenylation2022

    • Author(s)
      Sagawa Ray、Sakata Seiji、Gong Bo、Seto Yosuke、Takemoto Ai、Takagi Satoshi、Ninomiya Hironori、Yanagitani Noriko、Nakao Masayuki、Mun Mingyon、Uchibori Ken、Nishio Makoto、Miyazaki Yasunari、Shiraishi Yuichi、Ogawa Seishi、Kataoka Keisuke、Fujita Naoya、Takeuchi Kengo、Katayama Ryohei
    • Journal Title

      JCI Insight

      Volume: 7 Issue: 1 Pages: 1-19

    • DOI

      10.1172/jci.insight.153323

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Microsecond-timescale MD simulation of EGFR minor mutation predicts the structural flexibility of EGFR kinase core that reflects EGFR inhibitor sensitivity2021

    • Author(s)
      Yoshizawa Takahiro、Uchibori Ken、Araki Mitsugu、Matsumoto Shigeyuki、Ma Biao、Kanada Ryo、Seto Yosuke、Oh-hara Tomoko、Koike Sumie、Ariyasu Ryo、Kitazono Satoru、Ninomiya Hironori、Takeuchi Kengo、Yanagitani Noriko、Takagi Satoshi、Kishi Kazuma、Fujita Naoya、Okuno Yasushi、Nishio Makoto、Katayama Ryohei
    • Journal Title

      npj Precision Oncology

      Volume: 5 Issue: 1 Pages: 32-32

    • DOI

      10.1038/s41698-021-00170-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Platelet-derived lysophosphatidic acid mediated LPAR1 activation as a therapeutic target for osteosarcoma metastasis2021

    • Author(s)
      Takagi Satoshi、Sasaki Yuki、Koike Sumie、Takemoto Ai、Seto Yosuke、Haraguchi Mizuki、Ukaji Takao、Kawaguchi Tokuichi、Sugawara Minoru、Saito Masanori、Funauchi Yuki、Ae Keisuke、Matsumoto Seiichi、Fujita Naoya、Katayama Ryohei
    • Journal Title

      Oncogene

      Volume: 40 Issue: 36 Pages: 5548-5558

    • DOI

      10.1038/s41388-021-01956-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chromatin structure-dependent histone incorporation revealed by a genome-wide deposition assay2021

    • Author(s)
      Hiroaki Tachiwana, Mariko Dacher, Kazumitsu Maehara, Akihito Harada, Yosuke Seto, Ryohei Katayama, Yasuyuki Ohkawa, Hiroshi Kimura, Hitoshi Kurumizaka, Noriko Saitoh
    • Journal Title

      eLife

      Volume: 10

    • DOI

      10.7554/elife.66290

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overcoming resistance by ALK compound mutation (I1171S + G1269A) after sequential treatment of multiple ALK inhibitors in non‐small cell lung cancer2020

    • Author(s)
      Takahashi、Seto、Okada、Uematsu、Uchibori、Tsukahara、Oh‐hara、Fujita、Yanagitani、Nishio、Okubo、Katayama R.
    • Journal Title

      Thoracic Cancer

      Volume: 11 Issue: 3 Pages: 581-587

    • DOI

      10.1111/1759-7714.13299

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] シングルセルレベルで解き明かすがんの薬剤耐性の分子メカニズム2021

    • Author(s)
      瀬戸陽介、藤田直也、片山量平
    • Organizer
      日本進化学会第23回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] シングルセル技術を用いたがんの薬剤耐性メカニズムの解明2021

    • Author(s)
      瀬戸陽介、藤田直也、片山量平
    • Organizer
      日本遺伝学会第93回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] EGFR-TKI tolerant mechanisms of non-small cell lung cancer revealed by single-cell technologies2021

    • Author(s)
      Yosuke Seto, Naoya Fujita, Ryohei Katayama
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 研究室ホームページ

    • URL

      https://www.jfcr.or.jp/chemotherapy/department/fundamental/index.html

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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