Knock-down of SATB1 suppresses NPC cell migration. Cell migration was assessed 48 hours following transfection of CNE1, CNE2Z, C666-1 cells and NP-69 with cocktails of SATB1 siRNA (si-SATB1), control siRNA (si-Control) or untransfected (MOCK) by Transwell migration assay. Migrated cells present on the lower surfaces of the membranes were counted within fifteen representative fields in triplicate inserts. (A): Representative photographs of cell migration. (B): Cell migration and percentages. the results indicating the percentage of cell migration were plotted as the percentage over controls (MOCK). **P <0.01 vs Mock or si-Control-treated groups. Scale bars = 100 μM.