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- W2606608340 abstract "STING-activating nanoparticle vaccines achieve robust activation of tumour-specific T cells for cancer immunotherapy. The generation of tumour-specific T cells is critically important for cancer immunotherapy1,2. A major challenge in achieving a robust T-cell response is the spatiotemporal orchestration of antigen cross-presentation in antigen-presenting cells with innate stimulation. Here, we report a minimalist nanovaccine, comprising a simple physical mixture of an antigen and a synthetic polymeric nanoparticle, PC7A NP, which generates a strong cytotoxic T-cell response with low systemic cytokine expression. Mechanistically, the PC7A NP achieves efficient cytosolic delivery of tumour antigens to antigen-presenting cells in draining lymph nodes, leading to increased surface presentation while simultaneously activating type I interferon-stimulated genes. This effect is dependent on stimulator of interferon genes (STING), but not the Toll-like receptor or the mitochondrial antiviral-signalling protein (MAVS) pathway. The nanovaccine led to potent tumour growth inhibition in melanoma, colon cancer and human papilloma virus-E6/E7 tumour models. The combination of the PC7A nanovaccine and an anti-PD-1 antibody showed great synergy, with 100% survival over 60 days in a TC-1 tumour model. Rechallenging of these tumour-free animals with TC-1 cells led to complete inhibition of tumour growth, suggesting the generation of long-term antitumour memory. The STING-activating nanovaccine offers a simple, safe and robust strategy in boosting anti-tumour immunity for cancer immunotherapy." @default.
- W2606608340 created "2017-04-28" @default.
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- W2606608340 date "2017-04-24" @default.
- W2606608340 modified "2023-10-17" @default.
- W2606608340 title "A STING-activating nanovaccine for cancer immunotherapy" @default.
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- W2606608340 doi "https://doi.org/10.1038/nnano.2017.52" @default.
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