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Importance of MUC1 in the mechanism of resistance for anti-PD-1 inhibitor

Research Project

Project/Area Number 20K17182
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionHiroshima University

Principal Investigator

NAMBA MASASHI  広島大学, 病院(医), 助教 (40848090)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsMUC1 / KL-6 / PD-L1 / PD-1 antibody / 肺癌 / 免疫チェックポイント阻害薬
Outline of Research at the Start

本研究は、免疫チェックポイント阻害薬に対する耐性機序にMUC1(KL-6)が関わっているのではないかと仮説を立て、計画されたものである。新規に樹立させた肺癌細胞株におけるMUC1とPD-L1の発現状況を評価しつつ、MUC1の発現の増減によって、PD-1阻害薬に対する感受性が変化するかどうかを探索する。本研究によって、MUC1がPD-1阻害薬の耐性化に関わっていることが明らかとなると、PD-1阻害薬の治療効果を予測するバイオマーカーとなることや、MUC1を治療標的とすることによってPD-1阻害薬の耐性を克服することが可能となることが期待される。

Outline of Final Research Achievements

Although there was a correlation between serum KL-6 and the therapeutic effect of the PD-1 antibody in patients with lung cancer, no correlation was found between the KL-6 values and the level of PD-L1 expression. Moreover, data from the immunohistochemical staining of KL-6 did not show a correlation with the therapeutic effect.
We used flow cytometry to evaluate whether there would be any changes in PD-L1 expression when KL-6 expression was knocked down with siRNA in lung cancer cell lines, but we were unable to confirm any clear changes. However, it should not be concluded that there is no relationship between KL-6 and PD-L1 based solely on the results of the flow cytometry. It is considered necessary to conduct additional experiments in the future.

Academic Significance and Societal Importance of the Research Achievements

免疫チェックポイント阻害薬が効かない肺癌患者の中に血清KL-6が高値のものがいることがわかっており、KL-6が治療標的となりえるかどうかを探索する研究である。PD-L1発現との関連に着目して研究を行ったが、現状ではその関与を明らかにすることはできなかった。

Report

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

    (10 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Concurrent Mutations in <i>STK11</i> and <i>KEAP1</i> Cause Treatment Resistance in <i>KRAS</i> Wild-type Non-small-cell Lung Cancer2023

    • Author(s)
      Sumii M, Namba M, Tokumo K, Yamauchi M, Okamoto W, Hattori N, Sugiyama K.
    • Journal Title

      Internal Medicine

      Volume: 62 Issue: 20 Pages: 3001-3004

    • DOI

      10.2169/internalmedicine.1110-22

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2023-10-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 腹壁に進展発生した原発不明癌の1例2022

    • Author(s)
      東野 諒, 難波 将史, 徳毛 健太郎, 森 馨一, 利田 明日香, 山内 理海, 岡本 渉, 檜井 孝夫, 有廣 光司, 杉山 一彦
    • Journal Title

      広島医学

      Volume: 75 Pages: 348-352

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] インフリキシマブ投与で制御可能であった免疫関連有害事象としての大腸炎2例2022

    • Author(s)
      難波 将史, 徳毛 健太郎, 山内 理海, 岡本 渉, 林 亮平, 有廣 光司, 杉山 一彦
    • Journal Title

      広島医学

      Volume: 75 Pages: 205-210

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conversion from Positive to Negative EGFR Mutation due to Clonal Selection during Long-Term Treatment with Epidermal Growth Factor Receptor-Tyrosine Kinase Inhibitors: A Case Report2021

    • Author(s)
      Masatomo Ueda, Masashi Namba, Kentaro Tokumo, Tadashi Senoo, Wataru Okamoto, Masami Yamauchi, Noboru Hattori, Kazuhiko Sugiyama
    • Journal Title

      Case Reports in Oncology

      Volume: 14 Issue: 3 Pages: 1447-1453

    • DOI

      10.1159/000518246

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 急速に増大する左肩甲骨腫瘤のCTガイド下針生検が診断に有用であった肺癌の1例2021

    • Author(s)
      大崎 慶子, 難波 将史, 徳毛 健太郎, 三谷 英範, 帖佐 啓吾, 山内 理海, 岡本 渉, 粟井 和夫, 杉山 一彦
    • Journal Title

      広島医学

      Volume: 74 Pages: 381-384

    • NAID

      40022689500

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Extent of pulmonary fibrosis on high-resolution computed tomography is a prognostic factor in patients with pleuroparenchymal fibroelastosis.2020

    • Author(s)
      Namba M, Masuda T, Takao S, Terada H, Yamaguchi K, Sakamoto S, Horimasu Y, Miyamoto S, Nakashima T, Iwamoto H, Ohshimo S, Fujitaka K, Hamada H, Awai K, Hattori N.
    • Journal Title

      Respir Investig.

      Volume: 58 Issue: 6 Pages: 465-472

    • DOI

      10.1016/j.resinv.2020.05.009

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] A case of thymoma with systemic capillary leak syndrome that responded to high-dose steroid therapy2022

    • Author(s)
      M Namba, K Tokumo, M Yamauchi, W Okamoto, K Sugiyama
    • Organizer
      第19回日本臨床腫瘍学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] STK11/KEAP1変異による治療抵抗性が疑われた肺癌患者の一例2021

    • Author(s)
      難波 将史, 徳毛 健太郎, 杉山 一彦
    • Organizer
      第62回肺癌学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Current status and future challenges of lung cancer genome medicine at our hospital2021

    • Author(s)
      M Namba, K Tokumo, M Yamauchi, H Nakahara, Y Urabe, C. Nelson Hayes, Y Teratani, R Kobayashi, R Itamura, M Motonaga, K Yamaguchi, S Sakamoto, T Masuda, K Fujitaka, W Okamoto, K Arihiro, E Hiyama, N Hattori, T Hinoi, K Sugiyama
    • Organizer
      The 25th Congress of the Asian Pacific Society of Respirology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] HRCT所見における線維化の広がりはPleuroparenchymal Fibroelastosisの予後不良因子である2020

    • Author(s)
      難波 将史
    • Organizer
      第60回日本呼吸器学会学術講演会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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