3-dimensional trophoblast organoids (TB-ORG) represent a reliable model for studying extravillous trophoblast (EVT) lineage formation and differentiation. However, restricted access to first trimester placentae requires alternative cell sources for establishing placental organoids. Recently, we demonstrated EVT differentiation in JEG-3-derived organoids. Consequently, we herein tested whether other commonly used trophoblastic cell lines, ACH-3P, HTR-8/SVneo, and SWAN-71 were capable of self-organizing into organoids and subsequent EVT differentiation. Notably, only ACH-3P formed organoids under stemness conditions mimicking TB-ORG architectures, and induction of EVT differentiation provoked formation of HLA-G areas. Hence ACH-3P-ORGs provide another organoid model for studying controlled EVT lineage formation and differentiation.
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http://dx.doi.org/10.1016/j.placenta.2023.01.005 | DOI Listing |
Cell Biosci
January 2025
New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, 10314, USA.
Spontaneous preterm birth (sPTB) poses significant challenges, affecting neonatal health and neurodevelopmental outcomes worldwide. The specific effects of placental trophoblasts on the pathological development of sPTB subtypes-preterm premature rupture of fetal membranes (pPROM) and spontaneous preterm labor (sPTL)-are not fully understood, making it crucial to uncover these impacts for the development of effective therapeutic strategies. Using single-nucleus RNA sequencing, we investigated transcriptomic and cellular differences at the maternal-fetal interface in pPROM and sPTL placentas.
View Article and Find Full Text PDFCells Dev
January 2025
Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States of America; Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, United States of America; Jackson Laboratory, Farmington, CT, United States of America. Electronic address:
The maternal-fetal interface has long been considered as a frontier for an evolutionary arms race due to the close juxtaposition of genetically distinct tissues. In hemochorial species with deep placental invasion, including in humans, maternal stroma prepares its defenses against deep trophoblast invasion by decidualization, a differentiation process characterized by increased stromal cell matrix production, and contractile force generation. Decidualization has evolved from an ancestral wound healing response of fibroblast activation by the endometrial stroma.
View Article and Find Full Text PDFJ Vis Exp
November 2024
Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile;
During placenta development, extravillous trophoblast (EVT) cells invade the maternal decidua to remodel the uterine spiral arteries by a process of mesenchymal to endothelial-like transition. Traditionally, this process is evaluated by an in vitro tube-formation assay, where the cells organize themselves into tube-like structures when seeded over a polymerized basement membrane preparation. Although several structural features can be measured in photomicrographs of the structures, to assess the real commitment of EVT to the endothelial-type phenotype, biochemical analysis of cell extracts is required.
View Article and Find Full Text PDFBiol Reprod
November 2024
Department of Reproductive center, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200065, China.
The placenta, serving as the crucial link between maternal and infant, plays a pivotal role in maintaining a healthy pregnancy. Placental dysplasia can lead to various complications, underscoring the importance of understanding trophoblast lineage development. During peri-implantation, the trophectoderm (TE) undergoes differentiation into cytotrophoblast (CTB), syncytiotrophoblast (STB), and extravillous trophoblast (EVT).
View Article and Find Full Text PDFInt J Surg Pathol
November 2024
Department of Pathology, The University of Chicago, Chicago, IL, USA.
Vimentin-negative solid eosinophilic renal tumors, such as renal oncocytoma, chromophobe renal cell carcinoma (chromophobe RCC), low-grade oncocytic tumor (LOT) of the kidney, and eosinophilic vacuolated tumor (EVT), often present diagnostic challenge to pathologists as they can have significant morphologic overlap. Recent studies have shown that the LOT is consistently positive for GATA3. To test the utility of GATA3 in this potentially challenging diagnostic setting, we investigated GATA3 expression in 48 vimentin-negative solid eosinophilic renal tumors with unequivocal diagnosis, which included 19 LOTs, 3 EVTs, 12 chromophobe RCCs, 11 renal oncocytomas (ROs), and 3 -mutated renal tumors.
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