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- W4229002745 abstract "Abstract While T cell receptor (TCR)-modified T cell therapies have shown promise against solid tumors, overall therapeutic benefits in clinical practice have been modest due in part to suboptimal T cell persistence and activation in vivo, alongside the possibility of tumor antigen escape. In this study, we demonstrate an approach to enhance the in vivo persistence and activation of TCR-T cells through combination with Amphiphile (AMP)-vaccination including cognate TCR-T peptides. AMP-modification improves lymph node targeting of conjugated tumor immunogens and adjuvants, thereby coordinating a robust T cell-priming endogenous immune response. Vaccine combination with TCR-T cell therapy provided simultaneous in vivo invigoration of adoptively transferred TCR-T cells and in situ priming of the endogenous anti-tumor T cell repertoire. The resulting induction of an adoptive and endogenous anti-tumor effect led to durable responses in established murine solid tumors refractory to TCR-T cell monotherapy. Protection against recurrence was associated with antigen spreading to additional tumor-associated antigens not targeted by vaccination. Enhanced anti-tumor efficacy was further correlated with pro-inflammatory lymph node transcriptional reprogramming and increased antigen presenting cell maturation, resulting in TCR-T cell expansion and functional enhancement in lymph nodes and solid tumor parenchyma without lymphodepletion. In vitro evaluation of AMP-peptides with matched human TCR-T cells targeting NY-ESO-1, mutant KRAS, and HPV16 E7 illustrated the clinical potential of AMP-vaccination to enhance human TCR-T cell proliferation, activation, and anti-tumor activity. Taken together, these studies provide rationale and evidence to support clinical evaluation of the combination of AMP-vaccination with TCR-T cell therapies to augment anti-tumor activity. Summary AMP-vaccination targets the lymph nodes to enhance TCR-T cell therapy resulting in solid tumor eradication and durable protection against recurrence." @default.
- W4229002745 created "2022-05-08" @default.
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- W4229002745 date "2022-05-05" @default.
- W4229002745 modified "2023-10-01" @default.
- W4229002745 title "Lymph node-targeted vaccine boosting of TCR-T cell therapy enhances anti-tumor 1 function and eradicates solid tumors" @default.
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- W4229002745 doi "https://doi.org/10.1101/2022.05.05.490779" @default.
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