Intravenous nanoparticle vaccination generates stem-like TCF1(+) neoantigen-specific CD8(+) T cells.

Intravenous nanoparticle vaccination generates stem-like TCF1(+) neoantigen-specific CD8(+) T cells.
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静脉注射纳米颗粒疫苗接种产生茎状的TCF1(+)新抗原特异性CD8(+)T细胞。

DOI:
10.1038/s41590-020-00810-3
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发表时间:
2021-01
期刊:
影响因子:
30.5
通讯作者:
Seder RA
Seder RA
中科院分区:
医学1区
文献类型:
--
作者:
Baharom F;Ramirez-Valdez RA;Tobin KKS;Yamane H;Dutertre CA;Khalilnezhad A;Reynoso GV;Coble VL;Lynn GM;Mulè MP;Martins AJ;Finnigan JP;Zhang XM;Hamerman JA;Bhardwaj N;Tsang JS;Hickman HD;Ginhoux F;Ishizuka AS;Seder RA

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个体化癌症疫苗是诱导针对肿瘤新抗原的T细胞免疫的有希望的方法。使用将新抗原肽与TLR 7/8激动剂(SNP-7/8a)连接的自组装纳米颗粒疫苗,我们展示了途径和剂量如何改变新抗原特异性CD 8 + T细胞的数量和质量。与皮下免疫(SNP-SC)相比,静脉内接种(SNP-IV)诱导了更高比例的TCF 1 +PD-1+ CD 8 + T细胞。单细胞RNA-seq显示SNP-IV诱导了干细胞样基因(Tcf 7、Slamf 6、Xcl 1),而SNP-SC富集了效应基因(Gzmb、Klrg 1、Cx 3cr 1)。在治疗模型中,SNP-IV产生的干细胞样细胞在检查点阻断后增殖并分化为效应细胞,导致与SNP-SC相比具有上级抗肿瘤反应。树突状细胞抗原呈递的持续时间控制了CD 8 + T细胞的数量和质量。这些数据证明了如何通过调节疫苗参数来优化抗肿瘤免疫,以特异性产生效应细胞或干细胞样CD 8 + T细胞。
Personalized cancer vaccines are a promising approach for inducing T cell immunity to tumor neoantigens. Using a self-assembling nanoparticle vaccine that links neoantigen peptides to a TLR7/8 agonist (SNP-7/8a), we show how the route and dose alter the magnitude and quality of neoantigen-specific CD8+ T cells. Intravenous vaccination (SNP-IV) induced a higher proportion of TCF1+PD-1+ CD8+ T cells compared to subcutaneous immunization (SNP-SC). Single cell RNA-seq showed that SNP-IV induced stem-like genes (Tcf7, Slamf6, Xcl1) whereas SNP-SC enriched for effector genes (Gzmb, Klrg1, Cx3cr1). Stem-like cells generated by SNP-IV proliferated and differentiated into effector cells upon checkpoint blockade leading to superior antitumor response compared to SNP-SC in a therapeutic model. The duration of antigen presentation by dendritic cells controlled the magnitude and quality of CD8+ T cells. These data demonstrate how to optimize antitumor immunity by modulating vaccine parameters for specific generation of effector or stem-like CD8+ T cells.
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