Fig. 6From: Circular RNA circPLK1 promotes breast cancer cell proliferation, migration and invasion by regulating miR-4500/IGF1 axis MiR-4500 exerted its anti-cancer effects in BC cells by targeting IGF1. BT549 and HCC38 cells were transfected with miR-NC, miR-4500, miR-4500 + pcDNA3.0-NC, or miR-4500 + pcDNA3.0-IGF1. a Cell viability was assessed by CCK-8 assay. b Flow cytometry was applied to analyze the cell cycle distribution. c, d Western blot assay was performed to measure the protein levels of CDK4 and CDK6. e, f Transwell assay was employed to determine cell migration and invasion. ***P < 0.001Back to article page