The promoter site of LPCAT1 and a mutated form (CGCCCAGGC) of this site were cloned into a dual-luciferase reporter vector (Promega Corporation). The reporter vector was co-transfected along with oe-FOXA1 or oe-NC into MDA-MB-231 cells using FuGENE® transfection reagents (Promega Corporation). At 48 h post-transfection, the luciferase activity was assessed using the Dual-luciferase Reporter Assay System (Promega Corporation), according to the manufacturer's protocol, and normalized to Renilla luciferase activity.