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Identification for biomarkers in cancer peptide vaccine therapy with immune checkpoint inhibitors

Research Project

Project/Area Number 18K08681
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionYamaguchi University

Principal Investigator

Suzuki Nobuaki  山口大学, 大学院医学系研究科, 講師 (50526910)

Co-Investigator(Kenkyū-buntansha) 恒富 亮一  山口大学, 医学部附属病院, 講師 (10420514)
友近 忍  山口大学, 医学部附属病院, 助教 (30403679)
硲 彰一  山口大学, 医学部, 教授(寄附講座等) (50253159)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsペプチドワクチン療法 / 免疫チェックポイント阻害剤 / バイオマーカー / ペプチドワクチン / 免疫チェックポイント / 負の免疫応答 / 癌局所微小環境 / がんペプチド療法 / 固形がん
Outline of Final Research Achievements

Strong infiltration of CD8 + T cells and PD1 + T cells into tumor lesions expressing HSP70 and GPC3 antigens was observed. In addition, as a result of exploratory analysis from mass cytometry (CyTOF), the decrease in T cell exhaustion markers (BTLA and CCR4) of PBMC after vaccination (p = 0.03, p = 0.06), the increase in PD1 expression of TIL, and Granzyme B And low expression of perforin was revealed. It was suggested that this immunotherapy has the function of locally inducing T cells to change from cold tumor to hot tumor. In addition, PD1 expression and immune exhaustion status in TIL were confirmed, and the rationale for the combined use of ICI and this vaccine therapy was obtained as the next novel immunotherapy.

Academic Significance and Societal Importance of the Research Achievements

この研究で、固形癌(食道癌、胃癌、大腸癌、肝癌、膵癌、乳癌)に対するこれまでのペプチドワクチン療法と新規ペプチドワクチン療法を比較することにより、各種バイオマーカー(詳細は下段に記載)探索として、免疫染色、flowcytometry、ELISPOTならびにTCR(T細胞抗原認識受容体)レパトワ解析を行い、ペプチドワクチンのバイオマーカーを探索・同定すると同時に、固形癌患者における負の免疫病態を解明し、制御すべき病態を解明する基盤的研究を行う。さらには、免疫チェックポイント阻害剤と本ワクチン療法併用の科学的根拠を導出し、次世代の新規免疫療法として実用可能性を探索する。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2020 2019 2018

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

  • [Journal Article] A phase I study of multi-HLA-binding peptides derived from heat shock protein 70/glypican-3 and a novel combination adjuvant of hLAG-3Ig and Poly-ICLC for patients with metastatic gastrointestinal cancers: YNP01 trial.2020

    • Author(s)
      Masao;Nakajima, Shoichi, Hazama; Koji;Tamada. Nobuaki;Suzuki.Hiroaki;Nagano
    • Journal Title

      Cancer Immunology, Immunotherapy

      Volume: 5 Issue: 8 Pages: 5-10

    • DOI

      10.1007/s00262-020-02518-7

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification of a Promiscuous Epitope Peptide Derived From HSP70.2019

    • Author(s)
      Matsui H, Hazama S, Tamada K, Udaka K, Irie A, Nishimura Y, Miyakawa T, Doi S, Nakajima M, Kanekiyo S, Tokumitsu Y, Shindo Y, Tomochika S, Yoshida S, Iida M, Suzuki N, Takeda S, Yamamoto S, Yoshino S, Ueno T, Nagano H
    • Journal Title

      J Immunother

      Volume: 42 Issue: 7 Pages: 244-250

    • DOI

      10.1097/cji.0000000000000274

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 消化器癌における抑制性免疫解除と革新的新規免疫療法の開発2020

    • Author(s)
      鈴木伸明
    • Organizer
      日本外科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 新規アジュバントを用いたマルチHLA結合 がんペプチド療法の第I相試験2018

    • Author(s)
      鈴木伸明
    • Organizer
      第39回癌免疫外科研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 消化器癌に対する新規複合免疫・ペプチドワクチン療法における細胞性免疫の解析2018

    • Author(s)
      鈴木伸明
    • Organizer
      第31回日本バイオセラピイ学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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