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Human primed and naïve PSCs are equally potent in differentiating into bona fide trophoblast stem cells (ATAC-Seq)

ABSTRACT: Cells of the trophoblast lineage constitute the major part of placental tissues in higher mammals. Recent derivation of human trophoblast stem cells (TSC) from placental cytotrophoblasts (CT) and from blastocyst opens new opportunities for studying development and function of human placenta. Here we report that inhibition of TGF pathway leads to direct and robust conversion of primed human pluripotent stem cells into TSC. The resulting cell lines exhibit self-renewal, are able to differentiate into the main trophoblast lineages, and present RNA and epigenetic profiles that are indistinguishable from the TSC lines derived from placenta or blastocyst. Furthermore, activation of YAP pathway is necessary and sufficient for this conversion.

ORGANISM(S): Homo sapiens

PROVIDER: GSE213163 | GEO | 2022/09/21

REPOSITORIES: GEO

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Human primed and naive PSCs are equally potent in differentiating into bona fide trophoblast stem cells (RNA-Seq)

Project description:Cells of the trophoblast lineage constitute the major part of placental tissues in higher mammals. Recent derivation of human trophoblast stem cells (TSC) from placental cytotrophoblasts (CT) and from blastocyst opens new opportunities for studying development and function of human placenta. Here we report that inhibition of TGF pathway leads to direct and robust conversion of primed human pluripotent stem cells into TSC. The resulting cell lines exhibit self-renewal, are able to differentiate into the main trophoblast lineages, and present RNA and epigenetic profiles that are indistinguishable from the TSC lines derived from placenta or blastocyst. Furthermore, activation of YAP pathway is necessary and sufficient for this conversion.

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Human primed and naïve PSCs are equally potent in differentiating into bona fide trophoblast stem cells

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-09-21 | GSE213164 | GEO

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Project description:Trophoblast stem cells (TSCs) are derived from the trophoectoderm of a blastocyst and can maintain self-renewal in vitro. Meanwhile, essential insights into the molecular mechanisms controlling placental developmental could be gained by using TSCs that can differentiate into the various placental trophoblast cell types in vitro. Esrrb is a transcription factor with pivotal roles in maintaining TSCs’ self-renewal, but the exact transcriptional networks that Esrrb involved in TSCs are largely unknown. In the present study, we elucidated the function of Esrrb during TSC self-renewal and differentiation. We demonstrate that precise levels of Essrb are critical for TSCs stemness maintenance and normal trophoblast differentiation, as Esrrb depletion results in down-regulation of the key TSC-specific transcription factors, consequently causing TSCs differentiation and forced expression of Esrrb can partially block TSCs differentiation in the absence of FGF4. This function of Esrrb is exerted by directly binding and activating a core set of TSC-specific target genes including Cdx2, Eomes, Sox2, Fgfr4 and BMP4. Furthermore, we investigate the role of Esrrb in reprogramming of mouse embryonic fibroblasts (MEFs) to induced TSCs (iTSCs). We show that Esrrb can facilitate the conversion of iTSCs from MEFs. Moreover, Esrrb can substitute for Eomes during this conversion process. Our findings provide a better understanding of the molecular mechanism of Esrrb in maintaining TSCs self-renewal and iTSCs reprogramming.

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Transcriptomic profile of human placenta derived trophoblast organoid cultures with its tissue of origin, human placental villi.

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2018-11-28 | E-MTAB-6683 | biostudies-arrayexpress

Transcriptome profiling of human cytomegalovirus-infected trophoblasts

Project description:Placental infection plays a central role in the pathogenesis of congenital human cytomegalovirus (HCMV) infections and is a cause of fetal growth restriction and pregnancy loss. HCMV can replicate in some trophoblast cell types, but it remains unclear how the virus evades antiviral immunity in the placenta and how infection compromises placental development and function. Human trophoblast stem cells (TSCs) can be differentiated into extravillous trophoblasts (EVTs) and syncytiotrophoblasts (STBs). This study assessed the utility of TSCs as a model of HCMV infection in the first trimester placenta. TSCs and TSC-derived EVTs and STBs were infected with HCMV (TB40/Ewt-mCherry). RNA was isolated from infected cells at 24, 48, and 72 hours post-infection and Illumina RNA-Sequencing was used to measure viral and host gene expression. Viral gene expression in TSCs does not follow the kinetic patterns observed during lytic infection in fibroblasts. Canonical antiviral responses were largely not observed in HCMV-infected TSCs and TSC-derived trophoblasts. Rather, infection dysregulated factors involved in cell identity, differentiation, and WNT signaling.

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