following fluorescent conjugated monoclonal antibodies: Anti-2Kb, (clone
AF6-88.5.5.3,); anti-H-2Kdand anti-IA/IE(Ebiosciences, France); anti-HLA-A2 (BD Biosciences, France); anti-HLA-DR (Diaclone,
France) or with their respectively isotype control. For tumor infiltrating immune
cells analysis, tumor cells were mechanically dissociated (GentleMax, Miltenyi,
France) tumor infiltrating lymphocytes were separated on a Percoll (Sigma-Aldrich,
France) density gradient. Lymphocytes layer was collected and stained with the
following fluorescent conjugated monoclonal antibodies: anti-CD3, anti-CD4, anti-
CD8, anti-Gr1, anti-PD-L1 (Biolegend, France), anti-CD11b, anti- FoxP3,
anti-CD25 (eBiosciences, France), anti-PD-1, and anti-TIM-3 (Miltenyi, France),
fixable viability stain (BD, France). The tumor cells fraction was stained
withanti-CD45, anti-PD-L1, anti-HLA-A2 and anti-HLA-DR (BD Biosciences, France) and
fixable viability stain (Biolegend, France). Samples were acquired on a FACS Canto II
(BD Biosciences, France) and analyzed with the BDFacsDIVA or FlowJo software.