Pregnancy and preeclampsia studies
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Peroxisome proliferator-activated receptor gamma (PPARG) is a conserved regulator of placentation and is essential for directing trophoblast cell-guided uterine transformation.
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The expansion and differentiation of trophoblast stem (TS) cells are critical for defining fundamental properties of the placenta. Specialized trophoblast cells called extravillous trophoblast (EVT) cells in human and invasive trophoblast cells in rat, exit the placenta, enter and transform the uterus. This includes the restructuring of uterine spiral arteries, essential for the transfer of nutrients to the fetus. Mechanisms governing invasive trophoblast cell differentiation remain poorly understood. Here, we investigate peroxisome proliferator-activated receptor gamma (PPARG) as a potential regulator of EVT/invasive trophoblast cell development. In first trimester human placentas, PPARG is expressed in the EVT cell column and increases in amount as human TS cells differentiate into EVT cells. PPARG disruption impairs EVT cell differentiation and alters the expression of genes controlling EVT cell lineage development. Rat invasive trophoblast cells similarly express PPARG. Conditional inactivation of PPARG within rat invasive trophoblast cells establishes PPARG as an essential cell-autonomous regulator of invasive trophoblast cells in vivo. In conclusion, PPARG is a conserved regulator of placentation and is essential for directing trophoblast cell-guided uterine transformation.
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@article{Domnguez2026PPARG,
title = {PPARG directs trophoblast cell fate and establishment of the uterine-placental interface},
author = {Esteban M. Domínguez and Ayelen Moreno‐Irusta and Khursheed Iqbal and Keting Chen and Alex Finlinson and Marc Parrish and Hiroaki Okae and Takahiro Arima and Geetu Tuteja and Michael J. Soares},
journal = {EMBO Reports},
year = {2026},
doi = {10.1038/s44319-026-00896-0},
url = {https://doi.org/10.1038/s44319-026-00896-0}
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