Fig. 4

AS IV suppresses NF-κB activation in NPCs. a, b Cytoplasmic p-IκBα and IκBα protein levels. c, e Cytoplasmic NF-κB p65 protein levels. d, f Nuclear NF-κB p65 protein levels. g Localization of NF-κB p65 was evaluated by fluorescence microscopy. Scale bar: 50 μm. Data are expressed as means ± SD. ***P < 0.001 versus control group. ^###P < 0.001 and ^##P < 0.01 versus IL-1β group