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Development of immunotherapy following curative resection for refractory solid cancers

Research Project

Project/Area Number 17K10532
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General surgery
Research InstitutionHokkaido University

Principal Investigator

Tsuchikawa Takahiro  北海道大学, 大学病院, 講師 (50507572)

Co-Investigator(Kenkyū-buntansha) 平野 聡  北海道大学, 医学研究院, 教授 (50322813)
七戸 俊明  北海道大学, 医学研究院, 准教授 (70374353)
中村 透  北海道大学, 医学研究院, 助教 (70645796)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords難治性癌 / 集学的治療 / 免疫療法 / モニタリング / 術前化学療法 / 根治切除 / 腫瘍局所免疫環境 / 免疫応答 / 難治性固形癌 / 癌局所環境 / 実験外科 / TIL / 異所性リンパ組織 / 免疫チェックポイント / 実験外科学
Outline of Final Research Achievements

The efficacy of preoperative neoadjuvant chemoradiotherapy (NAC) in cases of pancreatic cancer with extremely poor prognoses has been investigated. We aimed to develop novel biomarkers that reflect prognoses following chemoradiotherapy using tertiary lymphoid organs (TLO) expressed in the tumor microenvironment. In the IHC analysis, the proportions of CD8+ T lymphocytes, PNAd+ high endothelial venules, CD163+ macrophages and Ki‐67+ cells within the TLO were higher in the NAC group than in the surgery first (SF) group. In contrast, the proportion of programmed cell death‐1+ immunosuppressive lymphocytes within TLO was lower in the NACgroup than in the SF group. The NAC group demonstrated favorable prognoses compared with the SF group. We demonstrated that the administration of preoperative chemoradiotherapy may influence the immunological elements in the tumor microenvironment and result in favorable prognoses in pancreatic ductal adenocarcinoma patients.

Academic Significance and Societal Importance of the Research Achievements

現在、難治性癌の治療は手術、抗癌剤、放射線治療などを術前・術後に組み合わせた形での集学的治療が標準的である。本研究により、抗癌剤による腫瘍崩壊の結果生じる多種多様な腫瘍抗原特異的抗体や局所での化学療法抵抗性をモニタリングすることが可能となり、その結果①術前抗癌剤投与による殺細胞効果と特異的免疫誘導効果の至適バランスの掌握、②根治的外科手術を施行する適切なタイミングの掌握、そして③誘導された特異的免疫能を損なわず、再発予防のための抗腫瘍免疫能を術後の適切な期間維持するための補助化学(放射線)療法の継続期間設定が可能となり、様々な癌種の個別化治療戦略に応用できる可能性がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (2 results) (of which Invited: 1 results)

  • [Journal Article] Prognostic relevance of tertiary lymphoid organs following neoadjuvant chemoradiotherapy in pancreatic ductal adenocarcinoma2019

    • Author(s)
      Kuwabara Shota、Tsuchikawa Takahiro、Nakamura Toru、Hatanaka Yutaka、Hatanaka Kanako C.、Sasaki Katsunori、Ono Masato、Umemoto Kazufumi、Suzuki Tomohiro、Sato Osamu、Hane Yuma、Nakanishi Yoshitsugu、Asano Toshimichi、Ebihara Yuma、Kurashima Yo、Noji Takehiro、Murakami Soichi、Okamura Keisuke et al.
    • Journal Title

      Cancer Science

      Volume: 110 Issue: 6 Pages: 1853-1862

    • DOI

      10.1111/cas.14023

    • NAID

      40021983711

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Postoperative nutritional benefits of proximal parenchymal pancreatectomy for low-grade malignant lesions in the pancreatic head2019

    • Author(s)
      Umemoto Kazufumi、Tsuchikawa Takahiro、Nakamura Toru、Okamura Keisuke、Noji Takehiro、Asano Toshimichi、Nakanishi Yoshitsugu、Tanaka Kimitaka、Hirano Satoshi
    • Journal Title

      HPB

      Volume: 21 Issue: 11 Pages: 1491-1496

    • DOI

      10.1016/j.hpb.2019.03.359

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 【がんにおけるPD-L1分子の発現調節】腫瘍局所環境における上皮間葉転換(EMT)とPD-L1の発現調節機構2019

    • Author(s)
      1.土川貴裕,上野 峰,佐々木勝則,田中公貴,中西喜嗣,浅野賢道,野路武寛,中村 透,岡村圭祐,七戸俊明,平野 聡
    • Journal Title

      癌と化学療法

      Volume: 46 Pages: 855-858

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Appropriate indication of organ preserving surgery for pancreatic neuroendocrine neoplasms2019

    • Author(s)
      土川貴裕
    • Organizer
      第31回日本肝胆膵外科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 膵・胆道悪性腫瘍に対するがん免疫療法の治療効果を予測するバイオマーカーの探索2017

    • Author(s)
      土川貴裕
    • Organizer
      日本消化器外科学会
    • Related Report
      2017 Research-status Report
    • Invited

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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