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IL-26 mediates epidermal growth factor receptor-tyrosine kinase inhibitor resistance in triple-negative breast cancer cells

Research Project

Project/Area Number 21K16389
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionJuntendo University

Principal Investigator

Itoh Takumi  順天堂大学, 大学院医学研究科, 特任助教 (80811835)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords炎症性サイトカイン / IL-26 / 乳癌 / 薬剤耐性 / Th17 / トリプルネガティブ乳癌 / EGFR-TKI / 腫瘍免疫 / 癌微小環境
Outline of Research at the Start

トリプルネガティブ乳癌(TNBC)では上皮成長因子受容体(EGFR)の高発現が認められるが、臨床でのEGFR阻害薬の有効性は乏しい。申請者は炎症性サイトカインのIL-26がTNBC細胞のバイパスシグナルを強力に活性化し、EGFRチロシンキナーゼ阻害剤(EGFR-TKI)の耐性を獲得させ、その作用機序として新規レセプターが関与する結果を得た。
本研究では、TNBCにおけるEGFR-TKI耐性獲得に特に重要な新規IL-26レセプターを特定し、IL-26のバイパス経路活性化のメカニズムを探索することでIL-26のより詳細な役割の解明を行う。

Outline of Final Research Achievements

Triple-negative breast cancer (TNBC) has a poor prognosis compared to other breast cancer subtypes. Although epidermal growth factor receptor (EGFR) is overexpressed in TNBC, clinical trials with EGFR inhibitors including tyrosine kinase inhibitors (EGFR-TKI) in TNBC have heretofore been unsuccessful. In this study, to understand the molecular mechanisms involved in the differences in EGFR-TKI efficacy on TNBC between human and mouse, we focused on the effect of IL-26, which is absent in mice. We investigated the mechanisms involved in IL-26-mediated EGFR-TKI resistance in TNBC. IL-26 induced activation of AKT and JNK signaling against EGFR-TKI-induced endoplasmic reticulum (ER) stress, leading to tumor growth. Meanwhile, the blockade of IL-26 overcame EGFR-TKI resistance in TNBC. Our work provides novel insights into the mechanisms of EGFR-TKI resistance in TNBC, while also suggesting IL-26 as a possible therapeutic target in TNBC.

Academic Significance and Societal Importance of the Research Achievements

本研究では、申請者が培ってきた独自の疾患モデルや技術を使用してEGFR-TKI耐性におけるIL-26の役割を明らかにし、IL-26による薬剤耐性メカニズムを解明した。さらに、ヒト化抗IL-26mAbの中和活性評価を行い、マウスのTNBCモデルに対するIL-26をターゲットとした治療法の有効性を確認した。これにより、IL-26抗体はEGFR-TKI耐性獲得が問題となっている肺癌や治療標的の無い難治性癌などに対しても、新しい治療法を確立するシーズとなる可能性が期待できる。さらに、樹立した抗体は、IL-26が関与する炎症性疾患の治療応用にも将来的に波及させることも可能だと考える。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (6 results)

All 2022 2021

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

  • [Journal Article] Humanized anti-IL-26 monoclonal antibody as a novel targeted therapy for chronic graft-versus-host disease2022

    • Author(s)
      Hatano Ryo、Itoh Takumi、Otsuka Haruna、Saeki Harumi、Yamamoto Ayako、Song Dan、Shirakawa Yuki、Iyama Satoshi、Sato Tsutomu、Iwao Noriaki、Harada Norihiro、Aune Thomas M.、Dang Nam H.、Kaneko Yutaro、Yamada Taketo、Morimoto Chikao、Ohnuma Kei
    • Journal Title

      American Journal of Transplantation

      Volume: 22 Issue: 12 Pages: 2804-2820

    • DOI

      10.1111/ajt.17178

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] IL-26 mediates epidermal growth factor receptor-tyrosine kinase inhibitor resistance through endoplasmic reticulum stress signaling pathway in triple-negative breast cancer cells2021

    • Author(s)
      Itoh Takumi、Hatano Ryo、Horimoto Yoshiya、Yamada Taketo、Song Dan、Otsuka Haruna、Shirakawa Yuki、Mastuoka Shuji、Iwao Noriaki、Aune Thomas M.、Dang Nam H.、Kaneko Yutaro、Okumura Ko、Morimoto Chikao、Ohnuma Kei
    • Journal Title

      Cell Death and Disease

      Volume: 12 Issue: 6 Pages: 520-520

    • DOI

      10.1038/s41419-021-03787-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effector memory CD4+T cells in mesenteric lymph nodes mediate bone loss in food-allergic enteropathy model mice, creating IL-4 dominance2021

    • Author(s)
      Ono-Ohmachi Aiko、Udagawa Nobuyuki、Nakamichi Yuko、Koide Masanori、Nakajima-Adachi Haruyo
    • Journal Title

      Mucosal Immunology

      Volume: 14 Issue: 6 Pages: 1335-1346

    • DOI

      10.1038/s41385-021-00434-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] IL-26 facilitates cartilage destruction and infiltration of inflammatory cells into synovium in a collagen induced arthritis model.2022

    • Author(s)
      Shirakawa Y, Hatano R, Itoh T, Otsuka H, Okumura K, Morimoto C.
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] がん免疫における多機能性サイトカインの役割2022

    • Author(s)
      伊藤匠
    • Organizer
      第19回日本免疫治療学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Anti-interleukin-26 therapy for the control of chronic inflammation in GVHD.2021

    • Author(s)
      Ryo Hatano, Haruna Otsuka, Takumi Itoh, Harumi Saeki, Ayako Yamamoto, Yuki Shirakawa, Satoshi Iyama, Noriaki Iwao, Tsutomu Sato, Taketo Yamada, Chikao Morimoto, Kei Ohnuma
    • Organizer
      第83回日本血液学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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