FN1 and cervical cancer: To verify whether FN1 could promote ITGA5‐mediated angiogenesis in vitro, we downregulated FN1 in cervical cancer cells transfected with siRNAs (siFN1 vs. siNC) or cultured cells in FN1‐containing substrate (+fibronectin vs. control) to manipulate the FN1‐ITGA5 interaction.