Characteristic DNA methylation profiles of chorionic villi in recurrent miscarriage
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ABSTRACT:
PROVIDER: PRJNA816500 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Genome wide DNA methylation profiling of chorionic villi and decidua from recurrent miscarriage patients and artificial abortion controls. Infinium HumanMethylation450 BeadChip was used.
2022-04-24 | GSE198700 | GEO
Project description:This study was designed to investigate the miRNA expression profilein human chorionic villi from early recurrent miscarriage. We identified 155 miRNAs exhibiting over 2-fold change in expression levels (P<0.05) by microarray,
2015-12-31 | GSE73025 | GEO
Project description:Miscarriage occurs in 15-20% of clinical pregnancies. While chromosomal errors are observed in over 50%, causes of karyotypically normal losses are poorly understood. DNA methylation undergoes reprogramming during development and must be appropriately set to maintain a healthy pregnancy. We hypothesize that aberrant DNA methylation may cause karyotypically normal miscarriage, particularly among women experiencing recurrent miscarriage (RM). DNA methylation in first trimester chorionic villi was assessed in chromosomally normal miscarriages from women with RM (N=33) or isolated miscarriage (M, N=21), and elective terminations (TA, N=16). Differentially methylated candidate loci were identified using the Illumina Infinium HumanMethylation27 BeadChip array by comparing 10 RM to 10 TA samples. Follow up showed a significant increase in methylation in RM and M compared to TA placentae at the CYP1A2 (p=0.002) and AXL (p=0.02) promoters and decrease at the DEFB1 (p=0.008) promoter. Gene function analysis showed an enrichment of imprinted genes (p=9.53E-10) and genes previously associated with RM (p=9.51E-06). DNA methylation was evaluated at 7 imprinted loci using bisulfite pyrosequencing. An increase of outliers at these loci was observed in RM (3.9%) compared to M (0%) and TA (0.9%) (p=0.02), with increased average methylation at the H19/IGF2 ICR1 in M samples (p<0.0001). Altered DNA methylation in the placenta at specific loci, as well as global dysregulation in specific cases, may contribute to or be a consequence of placental insufficiency in karyotypically normal miscarriage. First-trimester placental villi samples from karyotypically normal miscarriages from recurrent miscarriage patients (N, N=10) and chromosomally normal elective terminations (PZET, N=10).
2016-07-04 | E-GEOD-43256 | biostudies-arrayexpress
Project description:Miscarriage occurs in 15-20% of clinical pregnancies. While chromosomal errors are observed in over 50%, causes of karyotypically normal losses are poorly understood. DNA methylation undergoes reprogramming during development and must be appropriately set to maintain a healthy pregnancy. We hypothesize that aberrant DNA methylation may cause karyotypically normal miscarriage, particularly among women experiencing recurrent miscarriage (RM). DNA methylation in first trimester chorionic villi was assessed in chromosomally normal miscarriages from women with RM (N=33) or isolated miscarriage (M, N=21), and elective terminations (TA, N=16). Differentially methylated candidate loci were identified using the Illumina Infinium HumanMethylation27 BeadChip array by comparing 10 RM to 10 TA samples. Follow up showed a significant increase in methylation in RM and M compared to TA placentae at the CYP1A2 (p=0.002) and AXL (p=0.02) promoters and decrease at the DEFB1 (p=0.008) promoter. Gene function analysis showed an enrichment of imprinted genes (p=9.53E-10) and genes previously associated with RM (p=9.51E-06). DNA methylation was evaluated at 7 imprinted loci using bisulfite pyrosequencing. An increase of outliers at these loci was observed in RM (3.9%) compared to M (0%) and TA (0.9%) (p=0.02), with increased average methylation at the H19/IGF2 ICR1 in M samples (p<0.0001). Altered DNA methylation in the placenta at specific loci, as well as global dysregulation in specific cases, may contribute to or be a consequence of placental insufficiency in karyotypically normal miscarriage.
2016-01-02 | GSE43256 | GEO
Project description:In the chorionic villi of placenta, trophoblasts and endothelial cells are present, and moreover mesenchymal cells (stromal cells) can be obtained. We generated cells with the mesenchymal phenotype from the chorionic mesoderm, and showed that: a) physiologically functioning cardiomyocytes were transdifferentiated from human placenta-derived chorionic villi cells, but these cells did not induce to osteoblasts and adipocytes ; b) the cardiomyogenic induction rate obtained using our system was relatively high compared to that obtained using the previously described method ; c) co-cultivation with fetal murine cardiomyocytes alone without transdifferentiation factors such as 5-azaC or oxytocin is sufficient for cardiomyogenesis in our system; d) Chorionic villi cells have the electrophysiological properties of 'working' cardiomyocytes. The chorionic mesoderm contained a large number of cells with a cardiomyogenic potential. Keywords: Cardiomyogenic induction
2007-02-17 | GSE7021 | GEO
Project description: Not available
| S-EPMC9329430 | biostudies-literature
Project description:In the chorionic villi of placenta, trophoblasts and endothelial cells are present, and moreover mesenchymal cells (stromal cells) can be obtained. We generated cells with the mesenchymal phenotype from the chorionic mesoderm, and showed that: a) physiologically functioning cardiomyocytes were transdifferentiated from human placenta-derived chorionic villi cells, but these cells did not induce to osteoblasts and adipocytes ; b) the cardiomyogenic induction rate obtained using our system was relatively high compared to that obtained using the previously described method ; c) co-cultivation with fetal murine cardiomyocytes alone without transdifferentiation factors such as 5-azaC or oxytocin is sufficient for cardiomyogenesis in our system; d) Chorionic villi cells have the electrophysiological properties of 'working' cardiomyocytes. The chorionic mesoderm contained a large number of cells with a cardiomyogenic potential. Experiment Overall Design: To isolate chorionic villi cells, we used the explant culture method, in which the cells were outgrown from pieces of chorionic villi attached to dishes. Chorionic villi cells were harvested with 0.25% trypsin and 1 mM EDTA, and overlaid onto the cultured fetal cardiomyocytes at 7 x 103/cm2. Every 2 days, the culture medium was replaced with fresh culture medium that was supplemented with 10% FBS and 1 ug/ml Amphotericin B (GIBCO). The morphology of the beating chorionic villi cells was evaluated under a fluorescent microscope.
2008-06-15 | E-GEOD-7021 | biostudies-arrayexpress
Project description:We profiled the transcriptomes of about 110000 single cells from 16 human first-trimester decidual and villi samples from 5 normal samples and 3 recurrent miscarriage (RM) samples. Each decidual and villi samples was collected from the same patient. The cellular composition revealed five major subsets of immune cells including NK, T cell, macrophage, monocytes and B cell in the maternal fetal interface. We used the marker gene of macrophages to establish the diagnosis and treatment model of unexplained recurrent abortion, in order to explore the relationship between immune cells and unexplained recurrent abortion.
2022-10-04 | GSE214607 | GEO
Project description:DNA methylation profiling in recurrent miscarriage
| PRJNA593016 | ENA
Project description:siblings of patients with idiopathic recurrent miscarriage have a higher risk of miscarriage. <br>We hypothesized that this in part was conferred by shared genetic factors.<br>We took blood samples from patients with three or more miscarriages and from siblings with two or more miscarriages in order to perform affected sib-pair analysis.
2010-12-01 | E-MEXP-2942 | biostudies-arrayexpress