2021 Fiscal Year Final Research Report
Elucidation of novel cancer immune responses by TRPV1 signaling
Project/Area Number |
19K16830
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 50020:Tumor diagnostics and therapeutics-related
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Research Institution | Nagoya University |
Principal Investigator |
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 腫瘍免疫 / CD8陽性T細胞 / TRPV1シグナル |
Outline of Final Research Achievements |
We need specific receptors to sense temperature. In this study, we focused on the TRPV1 receptor, which is known to enhance immune responses, and examined whether activated TRPV1 signaling enhances the efficacy of cancer immunotherapy. The results showed that administration of capsaicin, a TRPV1 ligand, to tumor-bearing mice augmented the therapeutic effect of anti-PD-1 antibody immunotherapy, suggesting the activation of CD8-positive T cells and antigen-presenting cells by enhancing TRPV1 signaling. The results of this study suggest that the TRPV1 signaling enhancement mechanism may be a new therapeutic approach for patients who do not respond to immunotherapy.
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Free Research Field |
腫瘍免疫学
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Academic Significance and Societal Importance of the Research Achievements |
これまでのがん免疫研究の多くは、がん細胞および免疫細胞の性質に着目したものであったが、本研究ではTRPV1という神経系に関与する因子に着目した研究である。本研究成果より、TRPV1シグナルの亢進により抗腫瘍免疫応答が増強したことから、神経系に着目したがん免疫応答研究の発展につながると考えられる。現在では、抗癌剤や分子標的薬を併用した免疫療法が主流になっており、今後神経系に着目したがん免疫メカニズムが解明されることで、新規併用薬剤の開発につながると考えられる。
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