In order to further clarify whether ZEB1 is involved in the regulation of NPC by miR-186, the protein and gene expressions of ZEB1 in NPC tissues and cells were also analyzed, and the results showed that the protein and gene expressions of ZEB1 in NPC tissues were significantly increased (p < 0.01, Fig. 3E and F). Here, ZEB1 is linked to nasopharyngeal carcinoma.