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Author Spotlight: Modeling an Aspect of Preeclampsia in Female Mice Using Hypoxic Human Placenta-Derived Small Extracellular Vesicles
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Author Spotlight: Modeling an Aspect of Preeclampsia in Female Mice Using Hypoxic Human Placenta-Derived Small Extracellular Vesicles

Published on: January 26, 2024

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Severe pre-eclampsia is associated with alterations in cytotrophoblasts of the smooth chorion

Tamara Garrido-Gomez1,2,3,4, Katherine Ona1,2, Mirhan Kapidzic1,2

  • 1Center for Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA.

Development (Cambridge, England)
|February 25, 2017
PubMed

Pre-eclampsia (PE), which affects ∼8% of first pregnancies, is associated with faulty placentation. Extravillous cytotrophoblasts (CTBs) fail to differentiate properly, contributing to shallow uterine invasion and deficient spiral artery remodeling. We studied the effects of severe PE (sPE) on the smooth chorion portion of the fetal membranes. The results showed a significant expansion of the CTB layer. The cells displayed enhanced expression of stage-specific antigens that extravillous CTBs normally upregulate as they exit the placenta. Transcriptomics revealed the dysregulated expression of many genes (e.g. placental proteins, markers of oxidative stress). We confirmed an sPE-related increase in production of PAPPA1, which releases IGF1 from its binding protein. IGF1 enhanced proliferation of smooth chorion CTBs, a possible explanation for expansion of this layer, which may partially compensate for the placental deficits.

Keywords:
ChorionCytotrophoblastHumanPAPPA1Pre-eclampsiaPreterm birth

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