Down-regulated Long Noncoding RNAHOXA11-ASaffects trophoblast cell proliferation and migration by regulatingRND3andHOXA7expression in preeclampsia
AbstractThe long noncoding RNAHOXA11-ASreveals abnormal expression in numerous human diseases. However, its function and biological mechanisms remain unclear in Preeclampsia (PE). In this study, we report thatHOXA11-ASwas significantly downregulated in preeclampsic placental tissues and could contribute to the occurrence and development of Preeclampsia. Silencing ofHOXA11-ASexpression could significantly suppress trophoblast cell growth and migration, whereasHOXA11-ASoverexpression facilitated cell growth in HTR-8/SVneo, JEG3 and JAR cell lines. RNA-seq analysis also indicated thatHOXA11-ASsilencing preferentially regulated numerous genes associated with cell proliferation and cell migration. Mechanistic analyses showed thatHOXA11-AScould recruit Ezh2 and Lsd1 protein, and regulateRND3mRNA expression in nucleus. In cytoplasm,HOXA11-ASmodulateHOXA7expression by sponged miR-15b-5p, thus affecting trophoblast cell proliferation. Together, these resulting data confirm that aberrant expression ofHOXA11-ASis involved in the occurrence and development of Preeclampsia, and may act as a prospective diagnosis and therapeutic target in PE.