miR-451 suppresses NPC cell viability, colony formation, migration and invasion. (A) MTT assay was performed to test cell viability of SUNE-1 and CNE-2 cells. (B-D) Representative results of colony formation (B), migration (C), and invasive ability (D) of SUNE-1 and CNE-2 cells transfected with miR-29c mimics or miR control. Data is presented as the mean ± SD. *, P < 0.01 compared with control using the Student’s t-test.