MDMs from rs2004640/rs2280714 TT/TT or GG/CC carriers (n=15/genotype) were transfected with 25 nM scrambled or IRF5 siRNA (A-E), or empty vector or IRF5 vector (F-J), and then polarized to M1 macrophages and treated with 0.1μg/ml LPS for 48h. (A,F) Summarized MFI of IRF5 as assessed by flow cytometry+SEM. (B,G) Cells were cultured with E. faecalis or S. Typhimurium. CFU+SEM. (C-E, H-J) Summarized MFI of ROS or the indicated proteins as assessed by flow cytometry+SEM. NS, not significant; scr, scrambled. ††, p<1×10−5.