SNAI2 and head and neck squamous cell carcinoma: Moreover, mature miR-203 transfection decreased the expression of SNAI2 in EMT-induced HNSCC cells (HOC313 and SpSCC) (Supplemental Figure 4C), and miR-203 inhibitor transfection increased the expression of SNAI2 in HSC2 cells of epithelial phenotype (Supplemental Figure 4D).