TY - JOUR
T1 - Impairment of angiogenic sphingosine kinase-1/sphingosine-1-phosphate receptors pathway in preeclampsia
AU - Dobierzewska, Aneta
AU - Palominos, Macarena
AU - Sanchez, Marianela
AU - Dyhr, Michael
AU - Helgert, Katja
AU - Venegas-Araneda, Pia
AU - Tong, Stephen
AU - Illanes, Sebastian E.
N1 - Publisher Copyright:
© 2016 Dobierzewska et al.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2016/6
Y1 - 2016/6
N2 - Preeclampsia (PE), is a serious pregnancy disorder characterized in the early gestation by shallow trophoblast invasion, impaired placental neo-angiogenesis, placental hypoxia and ischemia, which leads to maternal and fetal morbidity and mortality. Here we hypothesized that angiogenic sphingosine kinase-1 (SPHK1)/sphingosine-1-phosphate (S1P) receptors pathway is impaired in PE. We found that SPHK1 mRNA and protein expression are downregulated in term placentae and term chorionic villous explants from patients with PE or severe PE (PES), compared with controls. Moreover, mRNA expression of angiogenic S1PR1 and S1PR3 receptors were decreased in placental samples of PE and PES patients, whereas anti-angiogenic S1PR2 was up-regulated in chorionic villous tissue of PES subjects, pointing to its potential atherogenic and inflammatory properties. Furthermore, in in vitro (JAR cells) and ex vivo (chorionic villous explants) models of placental hypoxia, SPHK1 mRNA and protein were strongly up-regulated under low oxygen tension (1% 02 ). In contrast, there was no change in SPHK1 expression under the conditions of placental physiological hypoxia (8% 02 ). In both models, nuclear protein levels of HIF1A were increased at 1% 02 during the time course, but there was no up-regulation at 8% 02 , suggesting that SPHK1 and HIF1A might be the part of the same canonical pathway during hypoxia and that both contribute to placental neovascularization during early gestation. Taken together, this study suggest the SPHK1 pathway may play a role in the human early placentation process and may be involved in the pathogenesis of PE.
AB - Preeclampsia (PE), is a serious pregnancy disorder characterized in the early gestation by shallow trophoblast invasion, impaired placental neo-angiogenesis, placental hypoxia and ischemia, which leads to maternal and fetal morbidity and mortality. Here we hypothesized that angiogenic sphingosine kinase-1 (SPHK1)/sphingosine-1-phosphate (S1P) receptors pathway is impaired in PE. We found that SPHK1 mRNA and protein expression are downregulated in term placentae and term chorionic villous explants from patients with PE or severe PE (PES), compared with controls. Moreover, mRNA expression of angiogenic S1PR1 and S1PR3 receptors were decreased in placental samples of PE and PES patients, whereas anti-angiogenic S1PR2 was up-regulated in chorionic villous tissue of PES subjects, pointing to its potential atherogenic and inflammatory properties. Furthermore, in in vitro (JAR cells) and ex vivo (chorionic villous explants) models of placental hypoxia, SPHK1 mRNA and protein were strongly up-regulated under low oxygen tension (1% 02 ). In contrast, there was no change in SPHK1 expression under the conditions of placental physiological hypoxia (8% 02 ). In both models, nuclear protein levels of HIF1A were increased at 1% 02 during the time course, but there was no up-regulation at 8% 02 , suggesting that SPHK1 and HIF1A might be the part of the same canonical pathway during hypoxia and that both contribute to placental neovascularization during early gestation. Taken together, this study suggest the SPHK1 pathway may play a role in the human early placentation process and may be involved in the pathogenesis of PE.
KW - Preeclampsia
KW - Angiogénesis
KW - Hypoxia
KW - Placental hypoxia
KW - Angiogene
UR - http://www.scopus.com/inward/record.url?scp=84976291634&partnerID=8YFLogxK
U2 - 10.1371/journal.pone.0157221
DO - 10.1371/journal.pone.0157221
M3 - Article
C2 - 27284992
AN - SCOPUS:84976291634
SN - 1932-6203
VL - 11
JO - PLoS ONE
JF - PLoS ONE
IS - 6
M1 - e0157221
ER -