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miR-20b activates the Wnt/β-catenin signaling pathway. (A) Relative mRNA and protein expression levels of APC in non-small cell lung cancer cell lines, PC-9, H1975, A549 and H1299, and BEAS-2B cells. *P<0.05, **P<0.01 and ***P<0.001 vs. BEAS-2A. (B) Western blot analysis of APC, β-catenin, C-Myc and cyclin D1 expression in PC-9 and H1975 cells transfected with miR-20b mimics, miR-20b inhibitor or miR-NC. miR, microRNA; NC, negative control; APC, adenomatous polyposis coli.
