FoxP4 promotes EMT in HCC cells through regulation of Slug. (A and B) HCCLM3 cells were transfected with pcDNA3.1-FoxP4 plasmid and FoxP4 siRNA, and the expression of E-cadherin and N-cadherin were determined using RT-qPCR and western blotting assays. (vs. Vector or SCR, *P<0.05). (C and D) HCCLM3 cells were transfected with pcDNA3.1-FoxP4 plasmid and FoxP4 siRNA, and the expression of EMT-associated transcription factors were determined using RT-qPCR and western blotting assays. (vs. Vector or SCR, *P<0.05). HCC, hepatocellular carcinoma.