Abstract
Preeclampsia, as one of the most serious pregnancy-specific diseases, manifested by high blood pressure and companied by proteinuria in pregnancy women after 20 gestational weeks. Although the underlying mechanism has been studied for decades, no unambiguous interpretation of this phenomenon was well recognized. Recent researches focused on long non-coding RNAs (lncRNAs) as key regulators of cancer cell proliferation, invasion, migration and angiogenesis. Tumor development and placenta implantation share several common biological behaviors. The expression of lncRNA MALAT1 was downregulated in the placenta of patients with severe preeclampsia. MALAT1 smart silencer significantly inhibited HTR-8/SVneo trophoblast cell proliferation, invasion, migration and tube formation in vitro. Moreover, MALAT1 inhibited the expression of angiogenic factors in umbilical vein endothelial cells co-cultured with trophoblasts. These results indicated that MALAT1 was involved in the pathogenesis of preeclampsia and might be a candidate biomarker as well as a therapeutic target for preeclampsia.
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