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Development of an Innovative Therapeutic Strategy for Pancreatic Cancer to Overcome Resistance to Immune Checkpoint Inhibitors

Research Project

Project/Area Number 21K07941
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionNagoya University

Principal Investigator

Iida Tadashi  名古屋大学, 医学部附属病院, 病院助教 (30878319)

Co-Investigator(Kenkyū-buntansha) 大野 栄三郎  名古屋大学, 医学部附属病院, 病院講師 (00447822)
石川 卓哉  名古屋大学, 医学部附属病院, 講師 (00792649)
川嶋 啓揮  名古屋大学, 医学系研究科, 教授 (20378045)
藤城 光弘  名古屋大学, 医学系研究科, 教授 (70396745)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords膵癌 / 癌関連線維芽細胞 / レチノイド / AM80 / メフリン / 免疫チェックポイント阻害剤 / ICI / 一細胞解析
Outline of Research at the Start

膵がんに代表される難治がんは免疫チェックポイント阻害剤(以下ICI)に対して抵抗性であり、その原因としてCAFが重要な役割を担っている。近年の研究によりCAFを促進性から抑制性にリプログラム(CAF初期化)させることで抵抗性が改善される可能性が示唆されているがその有効性に関しては明らかとなっていない。我々はMeflinを指標とすることでCAF初期化薬の候補薬を既に同定しており、本研究ではこれらの薬剤とICIとの併用効果を検証し、間質をターゲットとした革新的新規治療法の確立を目指す。

Outline of Final Research Achievements

This study aims to investigate the tumor-suppressive effect of combining AM80 with immune checkpoint inhibitors (ICIs) and to clarify the associated immune changes and mechanisms. In mouse models of pancreatic, urothelial, gastric, and lung cancers, AM80 combined with anti-PD-1 or anti-PD-L1 antibodies enhanced therapeutic effects. Single-cell analysis revealed that AM80 altered immune cells, especially lymphocytes and macrophages. Notably, macrophages shifted to an M1-like phenotype, increasing ICI sensitivity. These changes were confirmed by immunohistochemistry and flow cytometry. Mechanistically, AM80-induced Meflin-positive fibroblasts secreted chemerin, a chemokine that promoted M1 polarization of macrophages. This remodeling of the tumor microenvironment contributed to a stronger antitumor immune response. Our findings suggest that AM80 can reprogram stromal and immune components to overcome ICI resistance and improve treatment outcomes in cancer models.

Academic Significance and Societal Importance of the Research Achievements

本研究成果をもとに臨床試験計画を立案し、特定臨床試験としての実施に向けて各種申請書類を整備した。2024年2月には先進医療Bの認可を取得し、3月にはEDC(電子データ収集)システムの構築を完了、令和6年4月より臨床試験を開始し、有効性の検証を進めている。今後、ICI抵抗性膵癌に対する治療効果が確立されれば、ICIが無効とされる他のがん種への応用・適応拡大も期待される。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (21 results)

All 2024 2023 2022 2021

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 1 results) Book (2 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] Synthetic retinoid-mediated preconditioning of cancer-associated fibroblasts and macrophages improves cancer response to immune checkpoint blockade2024

    • Author(s)
      Owaki Takayuki、Iida Tadashi、Enomoto Atsushi
    • Journal Title

      British Journal of Cancer

      Volume: 131 Issue: 2 Pages: 372-386

    • DOI

      10.1038/s41416-024-02734-3

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Meflin is a marker of pancreatic stellate cells involved in fibrosis and epithelial regeneration in the pancreas2024

    • Author(s)
      Ando R, Shiraki Y, Miyai Y, Shimizu H, Furuhashi K, Minatoguchi S, Kato K, Kato A, Iida T, Mizutani Y, Ito K, Asai N, Mii S, Esaki N, Takahashi M, Enomoto A.
    • Journal Title

      J Pathol

      Volume: 262 Issue: 1 Pages: 61-75

    • DOI

      10.1002/path.6211

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] なぜ膵癌は免疫チェックポイント阻害薬が効かないのか?~その機序と克服をめざした膵癌間質研究~2024

    • Author(s)
      飯田 忠、大脇貴之、岡田晴生、水谷泰之、安藤良太、藤城光弘、川嶋啓揮、榎本 篤
    • Journal Title

      胆と膵

      Volume: 45 Pages: 171-178

    • Related Report
      2023 Research-status Report
  • [Journal Article] Good and Bad Stroma in Pancreatic Cancer: Relevance of Functional States of Cancer-Associated Fibroblasts.2022

    • Author(s)
      Ando R, Sakai A, Iida T, Kataoka K, Mizutani Y, Enomoto A
    • Journal Title

      Cancers

      Volume: 14 Issue: 14 Pages: 3315-3315

    • DOI

      10.3390/cancers14143315

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pharmacologic conversion of cancer-associated fibroblasts from a protumor phenotype to an antitumor phenotype improves the sensitivity of pancreatic cancer to chemotherapeutics2022

    • Author(s)
      Iida T, Mizutani Y, Esaki N, Ponik SM, Burkel BM, Weng L, Kuwata K, Masamune A, Ishihara S, Haga H, Kataoka K, Mii S, Shiraki Y, Ishikawa T, Ohno E, Kawashima H, Hirooka Y, Fujishiro M, Takahashi M, Enomoto A
    • Journal Title

      Oncogene

      Volume: 41 Issue: 19 Pages: 2764-2777

    • DOI

      10.1038/s41388-022-02288-9

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The role of EUS elastography-guided fine needle biopsy in the histological diagnosis of solid pancreatic lesions: a prospective exploratory study2022

    • Author(s)
      Ohno Eizaburo, Kawashima Hiroki, Ishikawa Takuya, Mizutani Yasuyuki, Iida Tadashi, et al.
    • Journal Title

      SCIENTIFIC REPORTS

      Volume: 12 Issue: 1 Pages: 16603-16603

    • DOI

      10.1038/s41598-022-21178-4

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Comparison of outcomes between secondary fully covered and uncovered self-expandable metal stents in the treatment of recurrent biliary obstruction of pancreatic cancer2022

    • Author(s)
      Kataoka Kunio, Kawashima Hiroki, Ohno Eizaburo, Ishikawa Takuya, Mizutani Yasuyuki, Iida Tadashi, Furukawa Kazuhiro, Nakamura Masanao, Honda Takashi, Ishigami Masatoshi, Fujishiro Mitsuhiro
    • Journal Title

      SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES

      Volume: 36 Issue: 8 Pages: 5676-5683

    • DOI

      10.1007/s00464-021-08981-2

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Safety and efficacy of MIKE-1 in patients with advanced pancreatic cancer: a study protocol for an open-label phase I/II investigator-initiated clinical trial based on a drug repositioning approach that reprograms the tumour stroma2022

    • Author(s)
      Mizutani Yasuyuki、Iida Tadashi、Ohno Eizaburo、Ishikawa Takuya、Kinoshita Fumie、Kuwatsuka Yachiyo、Imai Miwa、Shimizu Shinobu、Tsuruta Toshihisa、Enomoto Atsushi、Kawashima Hiroki、Fujishiro Mitsuhiro
    • Journal Title

      BMC Cancer

      Volume: 22 Issue: 1 Pages: 205-205

    • DOI

      10.1186/s12885-022-09272-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 免疫チェックポイント阻害剤感受性のための間質コンディショニング法の開発2024

    • Author(s)
      飯田 忠、石川卓哉、川嶋啓揮
    • Organizer
      第55回膵臓学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Cancer research pioneered from the unique aspects of pathological morphology Preconditioning of fibroblasts improves the response to immune checkpoint blockade across multiple cancers2024

    • Author(s)
      榎本 篤、大脇貴之、飯田 忠
    • Organizer
      日本癌学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 癌関連線維芽細胞をターゲットにした免疫チェックポイント阻害剤感受性改善薬の開発2023

    • Author(s)
      飯田 忠,榎本 篤,川嶋啓揮
    • Organizer
      第54回日本膵臓学会大会
    • Related Report
      2023 Research-status Report
  • [Presentation] Pharmacologic conversion of cancer-associated fibroblasts from a protumor phenotype to an antitumor phenotype improves the sensitivity of pancreatic cancer to immune checkpoint blockade therapy2023

    • Author(s)
      T Iida, H Kawashima, A Enomoto
    • Organizer
      AACR special conference in Cancer Research
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 癌抑制性線維芽細胞の同定と治療応用2022

    • Author(s)
      飯田 忠,水谷泰之,川嶋啓揮,榎本 篤
    • Organizer
      第81回日本膵臓学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Meflinは尿路上皮癌における免疫チェックポイント阻害剤治療の効果予測バイオマーカーである2022

    • Author(s)
      大脇 貴之, 宮井 雄基, 飯田 忠, 江崎 寛季, 白木 之浩, 三井 伸二, 榎本 篤
    • Organizer
      第81回日本膵臓学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 癌抑制性線維芽細胞の同定と治療応用2021

    • Author(s)
      飯田 忠
    • Organizer
      第52回日本膵臓学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 膵癌における癌関連線維芽細胞をターゲットにした新たな治療薬の探索2021

    • Author(s)
      飯田 忠
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Research-status Report
  • [Book] 消化器・肝臓内科2021

    • Author(s)
      飯田 忠, 水谷 泰之, 石川 卓哉, 大野 栄三郎, 川嶋 啓揮, 榎本 篤, 藤城 光弘
    • Total Pages
      4
    • Publisher
      科学評論社
    • Related Report
      2021 Research-status Report
  • [Book] 臨床免疫・アレルギー科2021

    • Author(s)
      飯田 忠, 水谷 泰之, 榎本 篤
    • Total Pages
      5
    • Publisher
      科学評論社
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 免疫チェックポイント阻害薬の投与を中止したがん患者に再使用する免疫チェックポイント阻害薬の治療効果向上用医薬2024

    • Inventor(s)
      飯田忠、大脇貴之、榎本篤、川嶋啓揮、赤松秀輔
    • Industrial Property Rights Holder
      東海国立大学機構
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2024 Annual Research Report
  • [Patent(Industrial Property Rights)] レチノイドとがん治療薬との併用療法が有効ながん患者の選択方法およびレチノイドとがん治療薬との併用医薬2023

    • Inventor(s)
      飯田忠、榎本篤、川嶋啓揮
    • Industrial Property Rights Holder
      ラクオリア創薬
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Acquisition Date
      2023
    • Related Report
      2023 Research-status Report
  • [Patent(Industrial Property Rights)] レチノイドとがん治療薬との併用療法が有効ながん患者の選択方法およびレチノイドとがん治療薬との併用医薬2021

    • Inventor(s)
      飯田忠、榎本篤、川嶋啓揮
    • Industrial Property Rights Holder
      飯田忠、榎本篤、川嶋啓揮
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
    • Overseas

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Published: 2021-04-28   Modified: 2026-01-16  

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