miR-133a-3p directly targets the 3′ untranslated region of the ERBB2 transcript in non-small cell lung cancer cells. (A) Bioinformatics analysis of miR-133a-3p and ERBB2. (B) Co-transfection of miR-133a-3p and pmir/ERBB2-WT markedly suppressed the luciferase activity. *P<0.05 vs. miR-NC. ERBB2, erb-b2 receptor tyrosine kinase 2; miR-133a-3p, microRNA-133a-3p; NC, negative control; WT, wild type; MUT, mutant.