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Identification of soluble CD146 as a regulator of trophoblast migration: potential role in placental vascular development

Identification of soluble CD146 as a regulator of trophoblast migration: potential role in... Both vasculogenesis and angiogenesis occur during normal placental vascular development. Additionally, the placenta undergoes a process of vascular mimicry (pseudo-vasculogenesis) where the placental extravillous trophoblast (EVT) that invade the spiral arteries convert from an epithelial to an endothelial phenotype during normal pregnancy. As soluble CD146 (sCD146) constitutes a new physiological factor with angiogenic properties, we hypothesized that it could be involved in the regulation of placental vascular development by acting on EVT. Using placental villous explants, we demonstrated that sCD146 inhibits EVT outgrowth. Consistently, we showed that sCD146 inhibits the ability of EVT cells (HTR8/SVneo) to migrate, invade and form tubes in Matrigel, without affecting their proliferation or apoptosis. The involvement of sCD146 in human pregnancy was investigated by evaluation of sCD146 levels in 50 pregnant women. We observed physiological down-regulation of sCD146 throughout pregnancy. These results prompted us to investigate the effect of prolonged sCD146 administration in a rat model of pregnancy. Repeated systemic sCD146 injections after coupling caused a significant decrease of pregnancy rate and number of embryos. Histological studies performed on placenta evidenced a reduced migration of glycogen cells (analogous to EVT in rat) in sCD146-treated rats. We propose that in human, sCD146 could represent both an attractive biomarker of placental vascular development and a therapeutic target in pregnancy complications associated with pathological angiogenesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Angiogenesis Springer Journals

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References (45)

Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer Science+Business Media Dordrecht
Subject
Biomedicine; Cancer Research; Biomedicine general; Cell Biology; Cardiology; Ophthalmology; Oncology
ISSN
0969-6970
eISSN
1573-7209
DOI
10.1007/s10456-012-9317-6
pmid
23108590
Publisher site
See Article on Publisher Site

Abstract

Both vasculogenesis and angiogenesis occur during normal placental vascular development. Additionally, the placenta undergoes a process of vascular mimicry (pseudo-vasculogenesis) where the placental extravillous trophoblast (EVT) that invade the spiral arteries convert from an epithelial to an endothelial phenotype during normal pregnancy. As soluble CD146 (sCD146) constitutes a new physiological factor with angiogenic properties, we hypothesized that it could be involved in the regulation of placental vascular development by acting on EVT. Using placental villous explants, we demonstrated that sCD146 inhibits EVT outgrowth. Consistently, we showed that sCD146 inhibits the ability of EVT cells (HTR8/SVneo) to migrate, invade and form tubes in Matrigel, without affecting their proliferation or apoptosis. The involvement of sCD146 in human pregnancy was investigated by evaluation of sCD146 levels in 50 pregnant women. We observed physiological down-regulation of sCD146 throughout pregnancy. These results prompted us to investigate the effect of prolonged sCD146 administration in a rat model of pregnancy. Repeated systemic sCD146 injections after coupling caused a significant decrease of pregnancy rate and number of embryos. Histological studies performed on placenta evidenced a reduced migration of glycogen cells (analogous to EVT in rat) in sCD146-treated rats. We propose that in human, sCD146 could represent both an attractive biomarker of placental vascular development and a therapeutic target in pregnancy complications associated with pathological angiogenesis.

Journal

AngiogenesisSpringer Journals

Published: Oct 30, 2012

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