Western blotting analysis was performed as previously reported62 (link). An equal amount (40–80 μg) of protein samples were detected. Primary antibodies against p-MLKL (Rabbit, 1:500, ab187091; Abcam, UK), MLKL (Rabbit 1:1000, ab194699; Abcam, UK), p-RIP1 (Rabbit, 1:500, 65746; Cell Signaling Technology, USA), RIP1 (Mouse, 1:500, ab72139; Abcam, UK), caspase 8 (Rabbit, 1:1000, A0215; ABclonal, China), caspase 3 (Rabbit, 1:1000, A11319; ABclonal, China), TNF-α (Rabbit, 1:500, ab6671; Abcam, UK), IL-6 (Mouse, 1:500, ab9324; Abcam, UK), iNOS (Rabbit, 1:500, ab15323; Abcam, UK), IL-1β (Rabbit, 1:500, ab2105; Abcam, UK), NF-kB p65 (Rabbit, 1:1000; ab16502, Abcam, UK), IkBα (Mouse, 1:1000, 4814; Cell Signaling Technology, USA), p-IkBα (Rabbit, 1:1000, 2859; Cell Signaling Technology, USA); H3 (Rabbit, 1:1000, AF0009; Beyotime, China) and β-actin (Rabbit, 1:3000, AC026; ABclonal, China) were used. Protein expression levels were analyzed using ImageJ software and normalized to β-actin (National Institutes of Health, Bethesda, MD, USA). Phosphorylated protein expression was evaluated compared to total protein expression.
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