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Review
. 2013 Oct;34(5):981-1023.
doi: 10.1016/j.mam.2012.12.008. Epub 2012 Dec 28.

Placental trophoblast cell differentiation: physiological regulation and pathological relevance to preeclampsia

Lei Ji  1 , Jelena Brkić, Ming Liu, Guodong Fu, Chun Peng, Yan-Ling Wang
Affiliations
Review

Placental trophoblast cell differentiation: physiological regulation and pathological relevance to preeclampsia

Lei Ji et al. Mol Aspects Med. 2013 Oct.

Abstract

The placenta is a transient organ that forms during pregnancy to support the growth and development of the fetus. During human placental development, trophoblast cells differentiate through two major pathways. In the villous pathway, cytotrophoblast cells fuse to form multinucleated syncytiotrophoblast. In the extravillous pathway, cytotrophoblast cells acquire an invasive phenotype and differentiate into either (1) interstitial extravillous trophoblasts, which invade the decidua and a portion of the myometrium, or (2) endovascular extravillous trophoblasts, which remodel the maternal vasculature. These differentiation events are tightly controlled by the interplay of oxygen tension, transcription factors, hormones, growth factors, and other signaling molecules. More recently, microRNAs have been implicated in this regulatory process. Abnormal placental development, particularly the limited invasion of trophoblast cells into the uterus and the subsequent failure of the remodeling of maternal spiral arteries, is believed to cause preeclampsia, a severe pregnancy related disorder characterized by hypertension and proteinuria. Oxidative stress, the abnormal production and/or function of signaling molecules, as well as aberrant microRNAs expression have been suggested to participate in the pathogenesis of preeclampsia. Several potential biomarkers for preeclampsia have been identified, creating new opportunities for the development of strategies to diagnose, prevent, and treat this disorder.

Keywords: Biomarker; Invasive pathway; Placental development; Preeclampsia; Trophoblast differentiation.

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