A transcriptionally and functionally distinct PD-1+ CD8+ T cell pool with predictive potential in non-small-cell lung cancer treated with PD-1 blockade

DS Thommen, VH Koelzer, P Herzig, A Roller… - Nature medicine, 2018 - nature.com
DS Thommen, VH Koelzer, P Herzig, A Roller, M Trefny, S Dimeloe, A Kiialainen, J Hanhart…
Nature medicine, 2018nature.com
Evidence from mouse chronic viral infection models suggests that CD8+ T cell subsets
characterized by distinct expression levels of the receptor PD-1 diverge in their state of
exhaustion and potential for reinvigoration by PD-1 blockade. However, it remains unknown
whether T cells in human cancer adopt a similar spectrum of exhausted states based on PD-
1 expression levels. We compared transcriptional, metabolic and functional signatures of
intratumoral CD8+ T lymphocyte populations with high (PD-1T), intermediate (PD-1N) and …
Abstract
Evidence from mouse chronic viral infection models suggests that CD8+ T cell subsets characterized by distinct expression levels of the receptor PD-1 diverge in their state of exhaustion and potential for reinvigoration by PD-1 blockade. However, it remains unknown whether T cells in human cancer adopt a similar spectrum of exhausted states based on PD-1 expression levels. We compared transcriptional, metabolic and functional signatures of intratumoral CD8+ T lymphocyte populations with high (PD-1T), intermediate (PD-1N) and no PD-1 expression (PD-1) from non-small-cell lung cancer patients. PD-1T T cells showed a markedly different transcriptional and metabolic profile from PD-1N and PD-1 lymphocytes, as well as an intrinsically high capacity for tumor recognition. Furthermore, while PD-1T lymphocytes were impaired in classical effector cytokine production, they produced CXCL13, which mediates immune cell recruitment to tertiary lymphoid structures. Strikingly, the presence of PD-1T cells was strongly predictive for both response and survival in a small cohort of non-small-cell lung cancer patients treated with PD-1 blockade. The characterization of a distinct state of tumor-reactive, PD-1-bright lymphocytes in human cancer, which only partially resembles that seen in chronic infection, provides potential avenues for therapeutic intervention.
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