Fig. 3: STAT3 is a target of miR-526b-3p and increases in cisplatin-resistant lung cancer.

a The putative binding sites of STAT3 3′UTR and miR-526b-3p are shown. b The relative dual-luciferase activity of STAT3 3′UTR in the indicated cells is measured. c The representative images of STAT3 expression in lung cancer tissues are shown. Sensitive, cisplatin sensitive. Resistant, cisplatin-resistant. Scale bar, 50 µm. d The expression of STAT3 in lung cancer tissues is accessed by qRT-PCR. *, P < 0.05 vs. adjacent tissues. #, P < 0.05 vs. cisplatin-sensitive tissues. e The correlation of STAT3 and miR-526b-3p is estimated by Spearman’s correlation coefficient. *, P < 0.05.