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Development of new cancer therapy using IRE combined with checkpoint blockade

Research Project

Project/Area Number 21K07072
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49070:Immunology-related
Research InstitutionTokyo Medical University

Principal Investigator

Sugimoto Katsutoshi  東京医科大学, 医学部, 准教授 (20385032)

Co-Investigator(Kenkyū-buntansha) 垣見 和宏  東京大学, 医学部附属病院, 特任教授 (80273358)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords肝細胞癌 / 穿刺局所療法 / ラジオ波焼灼療法 / 不可逆電気穿孔法 / 腫瘍免疫 / Radiofrequency ablation / IRE / Immune response / immunotherapy / アブスコパル効果 / 局所療法 / 免疫チェックポイント阻害薬
Outline of Research at the Start

近年免疫チェックポイント阻害薬が開発され、様々な癌腫において実臨床で使用されている。肝細胞癌においても臨床応用されているが、第3相試験の成績では奏功率は2割程度と高くない状況である。そこで近年では、免疫チェックポイント阻害薬と既存の治療薬との併用療法が期待されている。今回我々は担癌動物モデルを用い、免疫チェックポイント阻害薬と作用機序の異なる各種穿刺局所療法[RFA、不可逆電気穿孔法 (Irreversible electroporation: IRE)、マイクロ波凝固療法(MWA)]との併用療法としての有用性の評価とそのメカニズムを解析し、将来的な臨床応用へ向けた研究基盤を構築する。

Outline of Final Research Achievements

We compared the antitumor immune effects of two different local ablation therapies: radiofrequency ablation (RFA) and irreversible electroporation (IRE), using a cancer-bearing mouse model. Both RFA and IRE treatments eliminated tumors when the primary tumor was treated and then transplanted to another site. The observation of tumor growth with the administration of anti-CD8 antibodies suggested that CD8+ lymphocytes were involved in the inhibition of tumor growth. Additionally, in models with metastasis other than the primary tumor, treatment of the primary tumor with RFA resulted in the reduction of metastatic lesions, whereas treatment with IRE led to an increase in metastatic lesions. This phenomenon was suggested to be related to the involvement of IL-6. This tumor growth was suppressed by the administration of immune checkpoint inhibitors.

Academic Significance and Societal Importance of the Research Achievements

2つの異なる穿刺局所療法:ラジオ波焼灼療法(RFA)と不可逆電気穿孔法(IRE)の両方とも長期的な腫瘍免疫を誘導することが分かり、この現象にはCD8+リンパ球が関与していることが示唆された。しかし、IREでは治療を不完全に行うと残存腫瘍が増大する可能性があり、実臨床において注意する必要がある。

Report

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

    (8 results)

All 2024 2023 2022 2021

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

  • [Journal Article] Comparisons of Radiofrequency Ablation, Microwave Ablation, and Irreversible Electroporation by Using Propensity Score Analysis for Early Stage Hepatocellular Carcinoma.2023

    • Author(s)
      Wada T, Sugimoto K, Sakamaki K, Takahashi H, Kakegawa T, Tomita Y, Abe M, Yoshimasu Y, Takeuchi H, Itoi T.
    • Journal Title

      Cancers

      Volume: 15 Issue: 3 Pages: 732-732

    • DOI

      10.3390/cancers15030732

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiparametric US for Identifying Patients with High-Risk NASH: A Derivation and Validation Study2021

    • Author(s)
      Sugimoto Katsutoshi、Lee Dong Ho、Lee Jae Young、Yu Su Jong、Moriyasu Fuminori、Sakamaki Kentaro、Oshiro Hisashi、Takahashi Hiroshi、Kakegawa Tatsuya、Tomita Yusuke、Abe Masakazu、Yoshimasu Yu、Takeuchi Hirohito、Choi Byung Ihn、Itoi Takao
    • Journal Title

      Radiology

      Volume: 301 Issue: 3 Pages: 625-634

    • DOI

      10.1148/radiol.2021210046

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The most appropriate region-of-interest position for attenuation coefficient measurement in the evaluation of liver steatosis2021

    • Author(s)
      Sugimoto Katsutoshi、Abe Masakazu、Oshiro Hisashi、Takahashi Hiroshi、Kakegawa Tatsuya、Tomita Yusuke、Yoshimasu Yu、Takeuchi Hirohito、Itoi Takao
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 48 Issue: 4 Pages: 615-621

    • DOI

      10.1007/s10396-021-01124-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Significance of Radiofrequency Ablation for Unresectable Colorectal Cancer With Liver Metastases.2021

    • Author(s)
      Tago T, Katsumata K, Udou R, Kasahara K, Mazaki J, Kuwabara H, Enomoto M, Ishizaki T, Nagakawa Y, Sugimoto K, Itoi T, Tsuchida A.
    • Journal Title

      Anticancer Res.

      Volume: 41 Issue: 11 Pages: 5539-5547

    • DOI

      10.21873/anticanres.15367

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 穿刺局所療法による腫瘍免疫応答と免疫チェックポイント阻害剤併用による有用性の評価2024

    • Author(s)
      征矢良子
    • Organizer
      日本アブレーション学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Comparing thermal and non-thermal ablation with immune checkpoints for enhanced tumor immune response2024

    • Author(s)
      Ryoko Soya
    • Organizer
      APASL 2024 Kyoto
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 肝細胞癌に対する異なる3種類の穿刺局所療法(RFA, MWA, IRE)の有効性と安全性の評価2022

    • Author(s)
      和田卓也、杉本勝俊、糸井隆夫
    • Organizer
      肝臓学会東部会
    • Related Report
      2022 Research-status Report
  • [Presentation] Irreversible electroporation(IRE)が腫瘍免疫に及ぼす影響に関する検討2022

    • Author(s)
      征矢 良子、杉本 勝俊、長岡 孝治、木谷 嘉孝、土田 明彦、糸井 隆夫、垣見 和宏
    • Organizer
      第19回日本免疫治療学会学術集会
    • Related Report
      2021 Research-status Report

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

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