Inhibition of p38MAPK or MMP abrogates the promotion of cell invasion by SNCG. (A) HepG2 cells were transfected with 1 μg/ml of the empty vector or SNCG expression plasmid, and then treated with or without 50 μM of SB203580 and 10 μM of BB-94 for another 24h, followed by cell invasion assays. The relative cell invasion rate was plotted. The invasion rate in vehicle-treated and vector-transfected cells was set as 1. (B) HeLa cells were transfected with the empty vector or SNCG expression plasmid, and then treated with or without 50 μM of SB203580 and 10 μM of BB-94 for another 24h, followed by cell invasion assays. The relative cell invasion rate was plotted. Values represent mean ± SD (n = 3). *, p < 0.05;**, p <0.01; ***, p <0.001. In parallel, the efficiency of SNCG overexpresion was detected by western blotting.