Bone marrow-derived Dendritic Cells (BMDC) from C57BL/6 wild-type (WT) and MyD88 knock-out (KO) mice were cultured in IMDM (Euroclone, Milan, Italy) supplemented with 10% heat-inactivated FBS, 2 mM L-glutamine, 100 U/ml penicillin, 100 μg/ml streptomycin (all from Euroclone), 50 μM β-mercaptoethnol (Sigma), (IMDM complete medium), and 20% supernatant of GM-CSF transduced B16 tumor cells (20 ng/ml GM-CSF). Isolated cells were seeded at 6 × 106 cells/petri dish with 10 ml of grow medium (IMDM complete, 20% B16). Cells were incubated at 37 °C under 7% CO2. At day 3, 10 ml of fresh medium were added; at day 6, 10 ml of medium were changed. After 7–10 cultivation days, cells were analyzed by Flow cytometry (FACS) for CD11c expression and used in assays when 75–85% of the cells were CD11c-positive.
Bone marrow-derived macrophages (BMDM) from C57BL/6 wild-type (WT) were generated, as previously described, by culturing cells in medium containing M-CSF37 (link).