Peptide-MHC-targeted retroviruses enable in vivo expansion and gene delivery to tumor-specific T cells.

ABSTRACT: Tumor-infiltrating lymphocyte (TIL) therapy has demonstrated that endogenous T cells can be harnessed to initiate effective antitumor responses. Despite clinical promise, current TIL production protocols involve weeks-long ex vivo expansions that can affect treatment efficacy. Therefore, additional tools are needed to engineer TILs to have increased potency while mitigating manufacturing challenges. Here, we present a strategy for pseudotyping retroviruses with peptide-major histocompatibility complexes (pMHCs) for antigen-specific gene delivery to CD8 T cells and validate therapeutic impact in immunocompetent mouse models. We demonstrate that pMHC-targeted viruses specifically deliver function-enhancing cargos while simultaneously activating and expanding antitumor T cells. This targeting

SUBMITTER: Xu EJK 

PROVIDER: S-EPMC12594172 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature