Extended Data Fig. 4: Dysfunctional phenotype of T cells in iKRAS PDAC tumors identified by single cell gene expression profiling.

A. Representative genes and functional markers used for identification of T cell clusters. B. Heatmap of two CD4+ and four CD8+ T cell clusters with unique signature genes. C. Cell cycle scoring for two CD4+ and four CD8+ T cell clusters. D. Relative expression of select genes in CD8+ T cells as a function of pseudotime from Monocle2 inferred trajectory. Each point corresponds to a single cell, colored by CD8+ T cell cluster. Lines represent average expression at that location in the trajectory. E. Quantification of immune checkpoint expression on infiltrating CD4+ and CD8+ T cells in iKRAS tumors (n = 3 biological replicates), assessed by flow cytometry and analyzed by FlowJo.