LPS-primed neutrophils remain sensitive to FASL killing. (a) Primary WT and Bid−/− neutrophils were primed with LPS (10 ng/mL) for 30 min prior to stimulation with FASL (100 ng/mL) for indicated time points. Viability was assessed by flow cytometry. n ≥ 3, mean ± SEM. (b) Primary WT and Bid−/− neutrophils were primed with LPS (10 ng/mL) for 30 min, pre-treated with either Q-VD-OPh (20 μM), Nec.1 (20 μM) or the mouse MLKL inhibitor GW806742X (1 μM) for 30 min followed by stimulation with FASL (100 ng/mL) for indicated time points. Viability was assessed by flow cytometry. n = 3, mean ± SEM. (c) In vitro differentiated Ripk3−/− neutrophils were primed with LPS (10 ng/mL) for 30 min prior to stimulation with FASL (100 ng/mL) with or without Q-VD-OPh (20 μM) for indicated time points. Viability was assessed by flow cytometry. n ≥ 3, mean ± SEM. (a–c): p < 0.05 (*), p < 0.01 (**) and p < 0.005 (***). (d) In vitro differentiated WT and Bid−/− neutrophils were primed with LPS (10 ng/mL) prior to stimulation with FASL (100 ng/mL) for 0–8 h. Lysates were subjected to immunoblot. Presented immunoblots are representative of at least two independent experiments.