Circ-ZKSCAN1 in HBE cells. (A) Expression levels of circ-ZKSCAN1 in NSCLC cells treated with siRNAs. (B) CCK8 analysis of HBE cells with silencing or stably overexpressing circ-ZKSCAN1. (C,D) Cells treated with control, OE-circ-ZKSCAN1, and si-circ-ZKSCAN1 to perform wound healing assays. (E,F) HBE cells in transwell chambers were applied to cell migration assays (100×). (*P<0.05, **P<0.01). HBE, human bronchial epithelial.