Effects of IGF- Ⅱ and TGF-β1 on invasiveness of placental trophoblast cells in patients with pregnancy-induced hypertension syndrome

摘要

Objective: This study was to investigate the invasiveness of pregnancy-induced hypertension (PIH) trophoblast cells and evaluate the effects of IGF-Ⅱand TGF-β1 on cytotrophoblast invasion.Methods: Cytotrophoblast cells from normal and PIH placenta were separated and purified. Cytotrophoblast invasiveness of normal and PIH placenta was measured by in vitro invasion assay. Effects of IGF-Ⅱand TGF-β1 on cytotrophoblast invasion were also studied.Results: In PIH group, cytotrophoblast invasiveness was dramatically decreased. In normal group, trophoblast invasiveness was significantly enhanced by IGF-Ⅱ but inhibited by TGF-β1. Neither IGF-Ⅱ nor TGF-β1 had statistically significant effects on PIH trophoblast invasion.Conclusions: PIH cytotrophoblast invasiveness dramatically decreases as compared to the normal level. IGF-Ⅱand TGF-β1 may play an important role in shallow trophoblast invasion on PIH.