IPSC-based modeling of preeclampsia identifies defects in extravillous trophoblast differentiation
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1018965 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR26114700_1.fastq.gz | Fastqsanger.gz | |||
| SRR26114700_2.fastq.gz | Fastqsanger.gz | |||
| SRR26114701_1.fastq.gz | Fastqsanger.gz | |||
| SRR26114701_2.fastq.gz | Fastqsanger.gz | |||
| SRR26114702_1.fastq.gz | Fastqsanger.gz |
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Project description:Preeclampsia (PE) is a hypertensive pregnancy disorder with increased risk of maternal and fetal morbidity and mortality. Abnormal extravillous trophoblast (EVT) development and function is considered to be the underlying cause of PE, but has not previously been modeled in vitro. We previously derived induced pluripotent stem cells (iPSC) from placentas of PE patients and characterized abnormalities in formation of syncytiotrophoblast and responses to changes in oxygen tension. In this study, we converted these primed iPSC to naïve iPSC, then derived trophoblast stem cells (TSC) and EVT to evaluate molecular mechanisms underlying PE. We found that primed (but not naïve) iPSC-derived PE-EVT have reduced surface HLA-G, blunted invasive capacity, and altered EVT-specific gene expression. These abnormalities correlated with promotor hypermethylation of genes associated with the epithelial-mesenchymal transition pathway, specifically in primed-iPSC derived PE-EVT. Our findings indicate that abnormal epigenetic regulation might play a role in the PE pathogenesis.
2024-03-27 | GSE243579 | GEO
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Project description:Preeclampsia (PE) is a hypertensive pregnancy disorder with increased risk of maternal and fetal morbidity and mortality. Abnormal extravillous trophoblast (EVT) development and function is considered to be the underlying cause of PE, but has not been previously modeled in vitro. We previously derived induced pluripotent stem cells (iPSCs) from placentas of PE patients and characterized abnormalities in formation of syncytiotrophoblast and responses to changes in oxygen tension. In this study, we converted these primed iPSC to naïve iPSC, and then derived trophoblast stem cells (TSCs) and EVT to evaluate molecular mechanisms underlying PE. We found that primed (but not naïve) iPSC-derived PE-EVT have reduced surface HLA-G, blunted invasive capacity, and altered EVT-specific gene expression. These abnormalities correlated with promoter hypermethylation of genes associated with the epithelial-mesenchymal transition pathway, specifically in primed-iPSC derived PE-EVT. Our findings indicate that abnormal epigenetic regulation might play a role in PE pathogenesis.
| S-EPMC11016801 | biostudies-literature
Project description:Preeclampsia (PE) is a heterogeneous disease which lacks pathophysiology-based subclassification. Current clinical classification is based on gestational age at diagnosis and severity of disease. However, PE placentas have heterogeneous findings on pathologic exam. We combined clinical, pathological, immunohistochemical (IHC), and transcriptomic profiling to better subclassify this disease. 303 PE and 1388 non-hypertensive controls were included, with subgroups of samples used for each analysis. Detailed clinical and placental pathologic data were abstracted from our Obstetric Registry. Tissue studio (Definiens) was used for IHC analysis. RNAseq was performed using Illumina-NovaSeq using our standard pipeline. We found that maternal vascular malperfusion (MVM) in the placenta is associated with preterm PE and small-for-gestation neonates, with further subclassification into groups with and without fetal vascular malperfusion (FVM). Interestingly, MVM with FVM was further characterized by loss of proliferative cytotrophoblast, as confirmed by p63 IHC. Finally, transcriptomic analysis identified pathways associated with hypoxia and reduced cell-proliferation in PE-MVM placentas, and further subclassified this group into syncytiotrophoblast (STB)hi and extravillous trophoblast (EVT)hi PE, confirmed by IHC for trophoblast lineage-specific markers. Our findings suggest that PE can be subclassified based on underlying pathophysiologic changes, allowing identification of pathways which can be targeted for diagnostic and therapeutic purposes.
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Project description:Histopathologic and transcriptome profiling identify novel trophoblast lineage-specific defects in preeclampsia
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Project description:Placentation requires the proper regulation of extravillous trophoblast (EVT) migration and invasion into the decidua and maternal vasculature, processes which are initiated in physiologic hypoxic conditions. Abnormal EVT migration and/or invasion have been suggested to lead to pregnancy complications, such as preeclampsia. The objectives of this study are to determine how exposure to hypoxia impacts gene expression and cellular motility of first trimester trophoblasts, and to assess if expression of migration-associated genes is dysregulated in 2nd trimester chorionic villous samples (CVS) from preeclampsia pregnancies relative to CVS from healthy pregnancies. The 1st trimester trophoblast cell line, HTR8/SVneo, was used to investigate the relationship between hypoxia and Notch signaling in trophoblast migration and invasion. RNA sequencing and quantitative RT-PCR analyses show that exposure to hypoxia (2.5% O2) activates Notch signaling in HTR-8/SVneo. We demonstrate that exposure of HTR-8/SVneo to hypoxia induces expression of genes associated with cellular migration and invasion and increases HTR-8/SVneo cellular migration and invasion, whereas inhibition of gamma-secretase decreases Notch signaling and decreases HTR-8/SVneo migration and invasion. Analysis of RNA sequencing data from CVS of preeclampsia and uncomplicated pregnancies identified significant differentially expressed genes that are involved in cellular migration and invasion. Decreased expression of migration and invasion genes in CVS from preeclampsia pregnancies, may impair trophoblast migration and invasion in the 2nd trimester of pregnancy, resulting in the development of preeclampsia.
2021-08-05 | GSE155750 | GEO
Project description:Preeclampsia (PE) is a hypertensive disorder, which affects up to 10% of pregnancies worldwide. The primary etiology is considered to be abnormal development and function of placental cells called trophoblasts. We previously developed a two-step protocol for differentiation of human pluripotent stem cells, first into cytotrophoblast (CTB) progenitor-like cells, and then into both syncytiotrophoblast (STB)- and extravillous trophoblast (EVT)-like cells, and showed that this protocol can be used to model both normal and abnormal trophoblast differentiation. We have now applied this protocol to differentiate induced pluripotent stem cells (iPSC) derived from placentas of pregnancies with or without PE. While we did not note any differences in CTB induction, PE-iPSC-derived CTB showed a defect in syncytialization, and had a >180-fold reduction in expression of PSG4, a mature STB marker (p<0.02). While EVT formation did not appear to be altered, the invasive capacity of PE-iPSC-derived EVT was non-responsive to a decrease in oxygen tension, while that of non-PE-iPSC-derived EVT was enhanced 3.8-fold. RNA sequencing analysis showed gene expression changes consistent with defects in STB formation and response to hypoxia in PE-iPSC derived trophoblast. However, differences in DNA methylation were minimal, with only documented differences consistent with part of the response to hypoxia. Overall, PE-associated iPSC recapitulated multiple defects associated with placental dysfunction, with their lack of response to decreased oxygen tension emphasizing the importance of the interface with the maternal microenvironment in normal placentation.
2021-03-15 | GSE159479 | GEO
Project description:Preeclampsia (PE) is a hypertensive disorder, which affects up to 10% of pregnancies worldwide. The primary etiology is considered to be abnormal development and function of placental cells called trophoblasts. We previously developed a two-step protocol for differentiation of human pluripotent stem cells, first into cytotrophoblast (CTB) progenitor-like cells, and then into both syncytiotrophoblast (STB)- and extravillous trophoblast (EVT)-like cells, and showed that this protocol can be used to model both normal and abnormal trophoblast differentiation. We have now applied this protocol to differentiate induced pluripotent stem cells (iPSC) derived from placentas of pregnancies with or without PE. While we did not note any differences in CTB induction, PE-iPSC-derived CTB showed a defect in syncytialization, and had a >180-fold reduction in expression of PSG4, a mature STB marker (p<0.02). While EVT formation did not appear to be altered, the invasive capacity of PE-iPSC-derived EVT was non-responsive to a decrease in oxygen tension, while that of non-PE-iPSC-derived EVT was enhanced 3.8-fold. RNA sequencing analysis showed gene expression changes consistent with defects in STB formation and response to hypoxia in PE-iPSC derived trophoblast. However, differences in DNA methylation were minimal, with only documented differences consistent with part of the response to hypoxia. Overall, PE-associated iPSC recapitulated multiple defects associated with placental dysfunction, with their lack of response to decreased oxygen tension emphasizing the importance of the interface with the maternal microenvironment in normal placentation.
2021-03-15 | GSE159437 | GEO