Overexpression of miR-200c inhibits A549 and NCI-H460 cell proliferation and migration in vitro. (A) The expression of miR-200c in A549 and NCI-H460 cell lines after miR-200c mimic, inhibitor, and negative control (NC) miRNA transfection was detected by RT-qPCR. The cell proliferation of (B) A549 and (C) NCI-H460 cell lines after miR-200c mimic, inhibitor, and NC miRNA transfection was detected by MTT assay. The cell migration of (D) A549 and (E) NCI-H460 cell lines after miR-200c mimic, inhibitor, and NC miRNA transfection was detected by wound-healing assay. *p < 0.05, **p < 0.01, ***p < 0.001.