IL-12 drives the expression of the inhibitory receptor NKG2A on human tumor-reactive CD8 T cells.

ABSTRACT: Blockade of NKG2A/HLA-E interaction is a promising strategy to unleash the anti-tumor response. Yet the role of NKG2A⁺ CD8 T cells in the anti-tumor response and the regulation of NKG2A expression on human tumor-infiltrating T cells are still poorly understood. Here, by performing CITE-seq on T cells derived from head and neck squamous cell carcinoma and colorectal cancer, we show that NKG2A expression is induced on CD8 T cells differentiating into cytotoxic, CD39⁺CD103⁺ double positive (DP) cells, a phenotype associated with tumor-reactive T cells. This developmental trajectory leads to TCR repertoire overlap between the NKG2A^- and NKG2A⁺ DP CD8 T cells, suggesting shared antigen specificities. Mechanistically, IL-12 is essential for

SUBMITTER: Fesneau O 

PROVIDER: S-EPMC11574270 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature