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Improvement of the efficacy of CAR-T cell therapy by metabolic modification

Research Project

Project/Area Number 22K07228
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionMie University

Principal Investigator

MIWA Hiroshi  三重大学, 医学系研究科, 産学官連携講座准教授 (00209967)

Project Period (FY) 2022-04-01 – 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 2024: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsCAR-T細胞 / 解糖阻害 / エネルギー代謝 / 代謝改変 / 解糖阻害薬
Outline of Research at the Start

CAR-T細胞の代謝を改変することにより、CAR-T細胞療法の有効性を向上させることを目指す。我々はこれまでに、低濃度の解糖阻害薬(2-deoxyglucose : 2-DG)を添加するとCAR-T細胞を抗原刺激時にγ-IFN産生が亢進することを見出した。その機序として想定される、糖新生→グリコーゲン生成、分解→ペントースリン酸回路活性化→NADPHの産生亢進(redox改善)によるT細胞疲弊の解除→エフェクター機能亢進、について検証する。さらに担癌マウスをCAR-T細胞で治療する際、2-DGを投与することで治療効果の改善が認められるかを検証し、代謝改変CAR-T細胞療法の臨床応用への可能性を追求する。

Outline of Final Research Achievements

We showed that the efficacy of CAR-T cell therapy can be improved by adding low dose glycolysis inhibitor, 2-deoxyglucose (2-DG). Low dose 2-DG enhanced the mitochondrial function of CAR-T cells, leading to augmented production of cytotoxic molecules and effector cytokines. In addition, we showed that low dose 2-DG activated pentose phosphate pathway, which augmented the production of reduced form glutathione. This inhibited T cell exhaustion by scavenging reactive oxygen species (ROS). Here, we demonstrated that metabolic intervention by low dose 2-DG improved the efficacy of CAR-T cell therapy.

Academic Significance and Societal Importance of the Research Achievements

CAR-T細胞療法は難治性腫瘍の新たな治療法として期待されているが、不応例・再発例などが少なからず認められさらなる改善を要する。今回の検討で低濃度の解糖阻害薬2-DGの添加によりCAR-T細胞のミトコンドリア機能亢進、ペントースリン酸回路を介して酸化ストレスを解消することにより細胞傷害活性が増強すればCAR-T細胞療法の有効性向上に資するものと考えられる。

Report

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

    (3 results)

All 2024 2023

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

  • [Journal Article] MAGE-A4 pMHC-targeted CAR-T cells exploiting TCR machinery exhibit significantly improved in vivo function while retaining antigen specificity2024

    • Author(s)
      Liu Meiou、Akahori Yasushi、Imai Naoko、Wang Linan、Negishi Kohei、Kato Takuma、Fujiwara Hiroshi、Miwa Hiroshi、Shiku Hiroshi、Miyahara Yoshihiro
    • Journal Title

      Journal for ImmunoTherapy of Cancer

      Volume: 12 Issue: 11 Pages: e010248-e010248

    • DOI

      10.1136/jitc-2024-010248

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] αβ-T cell receptor transduction gives superior mitochondrial function to γδ-T cells with promising persistence2023

    • Author(s)
      Ishihara Mikiya、Miwa Hiroshi、Fujiwara Hiroshi、Akahori Yasushi、Kato Takuma、Tanaka Yoshimasa、Tawara Isao、Shiku Hiroshi
    • Journal Title

      iScience

      Volume: 26 Issue: 10 Pages: 107802-107802

    • DOI

      10.1016/j.isci.2023.107802

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ライブセル代謝分析装置LiCellMoによるCAR-T細胞の代謝動態と機能との関連2024

    • Author(s)
      三輪啓志
    • Organizer
      第28回日本がん免疫学会総会
    • Related Report
      2024 Annual Research Report

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Published: 2022-04-19   Modified: 2026-01-16  

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