Figure 5.

CD200 mildly affects NF-κB activation triggered by Staphylococcal infection. Mouse PEMs were transfected with CD200 siRNA or NC siRNA for 48 h, and then stimulated with S. aureus (MOI = 1) for indicated time periods (0–2 h). (A) Cells were lysed, and the protein level of p-p65, p65, p-IκBα, or IκBα was detected by western blotting. β-Actin served as a loading control. (B) Immunofluorescence was performed to visualize p65 nuclear translocation. Scale bars: 10 µm. Representative images of three independent experiments are shown. The phosphorylation state of p65 was semi-quantitated using ImageJ software. ND means not detected; * p < 0.05, *** p < 0.005.