WT macrophages were pre-incubated with p38 inhibitor (SB203580, 20 μM), JNK inhibitor II (SP600125, 20 μM), ERK inhibitors (U0126, 10 μM; PD 98095, 20 μM), or NF-κB signaling inhibitor (Bay 11-7082,10 μM) for 1 hour prior to miR-146a (50 nM) or its U→A mutant treatment. cfB mRNA level was quantified by qRT-PCR 6 hours after treatment. * P < 0.05, δ P < 0.01, # P < 0.001, vs. corresponding mutant control. ** P < 0.01, *** P < 0.001. n=3 in each group.