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ABSTRACT: DNA methylation profiles in placenta development

PROVIDER: PRJNA917463 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22953758_1.fastq.gz	Fastqsanger.gz
	SRR22953758_2.fastq.gz	Fastqsanger.gz
	SRR22953759_1.fastq.gz	Fastqsanger.gz
	SRR22953759_2.fastq.gz	Fastqsanger.gz
	SRR22953760_1.fastq.gz	Fastqsanger.gz

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Epigenome analysis of newborn placenta and cord blood samples

2012-03-29 | GSE36852 | GEO

DNA methylation in mammalian placentas

Project description:Over the last 20-80 million years the mammalian placenta has taken on a variety of morphologies through both divergent and convergent evolution. Recently we have shown that the human placenta genome has a unique epigenetic pattern of large partially methylated domains (PMDs) and highly methylation domains (HMDs) with gene body DNA methylation positively correlating with level of gene expression. In order to determine the evolutionary conservation of DNA methylation patterns and transcriptional regulatory programs in the placenta, we performed a genome-wide methylome (MethylC-seq) analysis of human, rhesus macaque, squirrel monkey, mouse, dog, horse, and cow placentas as well as opossum extraembryonic membrane. We found that, similar to human placenta, mammalian placentas and opossum extraembryonic membrane have globally lower levels of methylation compared to somatic tissues. However, not all species have clear PMD/HMDs in their placentas. Instead what is conserved is higher methylation over the bodies of genes involved in mitosis, vesicle-mediated transport, protein phosphorylation, and chromatin modification compared with the rest of the genome. As in human placenta, high gene body methylation is associated with higher gene expression across species. Analysis of DNA methylation in mouse and cow oocytes shows the same pattern of gene body methylation over many of the same genes as in the placenta, suggesting that this conserved pattern of active gene body methylation of the placenta may be established very early in development. MethylC-seq on placentas of 7 mammals, trophoblasts of rhesus, brains of 3 mammals, oocytes of cow, and human cordblood

2015-08-05 | E-GEOD-63330 | biostudies-arrayexpress

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Project description:DNA methylation profiles of liver and placenta technical replicates

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Epigenome analysis of newborn placenta and cord blood samples

Project description:DNA methylation profiling of placenta and cord blood samples. The Illumina GoldenGate methylation assay was used to obtain DNA methylation profiles across approximately 1,536 CpGs in 23 placenta and 23 cord blood samples. Bisulphite converted DNA from the 46 samples were hybridised to the Illumina GoldenGate Methylation assay

2012-03-28 | E-GEOD-36852 | biostudies-arrayexpress

Maternal DNA methylation regulates early trophoblast development

Project description:Critical roles for DNA methylation in embryonic development are well established, but less is known about the roles of DNA methylation during trophoblast development, the extraembryonic lineage that gives rise to the placenta. Here we dissected the role of DNA methylation in trophoblast development by performing mRNA and DNA methylation profiling of Dnmt3a/3b-null trophoblast. We find that most gene deregulation is explained by an erasure of maternal methylation in the oocyte, but partially independent of loss of imprinting of the trophoblast-essential Ascl2 gene. Our results reveal that maternal DNA methylation controls multiple differentiation and physiological processes in trophoblast via both imprinting-dependent and -independent mechanisms. mRNA-seq and WGBS-seq of maternal Dnmt3a/3b-null trophoblast; mRNA-seq of maternal Ascl2 KO trophoblast

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Epigenome analysis of placenta samples from newborns

2012-03-29 | GSE36829 | GEO

CpG Island methylation variation in placentae of Intra-Uterine Growth Restricted (IUGR) fetuses versus controls

Project description:Methylation profiling of CpG Island Methylation of genomic DNA samples extracted from placentae of Intra-Uterine Growth Restricted newborns and gestational age matched controls. These data can be used for methylation comparisons between these two types of samples. The results of such comparisons can be used to generate hypotheses on the involvement of DNA methylation variation in placenta development and fetal growth. Two-condition Methyl DNA Immunoprecipitation (MeDIP) experiment, IUGR vs. Control placenta samples. Biological replicates: 8 control, 8 IUGR cases.

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Project description:Genome wide DNA methylation profiling of placenta/cord blood/saliva samples obtained from babies born by oocyte in vitro maturation (IVM) or in vitro fertilization (IVF). The Illumina Infinium EPIC Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 850,000 CpGs. The main goal of this project was to find specific methylation profiles associated to use of IVM.

2023-07-20 | GSE208704 | GEO

Epigenome analysis of placenta samples from newborns

Project description:Genome wide DNA methylation profiling of placenta samples from 48 newborns. The Illumina Infinium 27k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 27,000 CpGs. Bisulphite converted DNA from the 48 samples were hybridised to the Illumina Infinium 27k Human Methylation Beadchip v1.2

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A Complex Association between DNA Methylation and Gene Expression in Human Placenta at First and Third Trimesters

Project description:We performed DNA methylome analysis by reduced representation bisulfite sequencing (RRBS) and gene expression analysis by RNA-Seq for both first and third trimester human placenta tissues.The correlation between DNA methylation and gene expression was non-linear and complex, depending on the genomic context (promoter or gene body) and gene expression levels. A wide range of DNA methylation and gene expression changes were observed at different gestational ages. The non-linear association between DNA methylation and gene expression indicates that epigenetic regulation of placenta development is more complex than previously envisioned.

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