scRNA-seq of CD45+ cells isolated from lungs of mice carrying KPneo tumors that received FLT3L and aCD40 (DC-therapy) or rat IgG2a isotype control

Dendritic cells are key player to initiate anti-tumoral response. In this study we aimed to characterize the function of type 1 DCs during priming of CD8 T cell responses against endogenous neoantigens encoded by a KrasG12D/WT; Tp53 (KP) lung cancer model. To enhance the immunostimulatory properties of cDC1, we delivered a combination of Flt3L and aCD40 antibodies. We found that this therapy is sufficient to induce proliferation of neoantigen specific CD8 T cells and restrain growth of lung tumor nodules. scRNA-seq transcriptional profiling of the lung immune infiltrate of tumor-challenged animals with and without DC-therapy was performed to understand the molecular changes induced in DCs subsets and CD8 T cell subsets.