LINC00240 and preeclampsia: Further investigation using CCK-8, colony formation, wound healing, Transwell and cell–cell fusion assays indicated that LINC00240 overexpression could increase the cell proliferation (Fig. 5D, E), migration (Fig. 5F), invasion (Fig. 5G), and fusion (Additional file 1: Fig. S1A, B) abilities of trophoblasts cultured in hypoxic condition, and these effects could be partially inhibited by miR-155 overexpression, indicating that LINC00240 improved the function of trophoblasts by negatively targeting miR-155 in preeclampsia model in vitro.