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Danio rerio

ABSTRACT: Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos (MRE-seq)

PROVIDER: PRJNA229866 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1037430.fastq.gz	Fastqsanger.gz
	SRR1037431.fastq.gz	Fastqsanger.gz
	SRR1037432.fastq.gz	Fastqsanger.gz
	SRR1037427.fastq.gz	Fastqsanger.gz
	SRR1037428.fastq.gz	Fastqsanger.gz

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Danio rerio

Project description:Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos (MeDIP-seq)

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Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos

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Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos (MRE-seq)

Project description:DNA methylation undergoes dynamic changes during development and cell differentiation. Recent genome-wide studies discovered that tissue-specific differentially methylated regions (DMRs) often overlap tissue-specific distal cis-regulatory elements. However, developmental DNA methylation dynamics of the majority of the genomic CpGs outside gene promoters and CpG islands has not been extensively characterized. Here we generate and compare comprehensive DNA methylome maps of zebrafish developing embryos. From these maps, we identify thousands of developmental stage-specific DMRs (dsDMRs) across zebrafish developmental stages. The dsDMRs contain evolutionarily conserved sequences, are associated with developmental genes and are marked with active enhancer histone posttranslational modifications. Their methylation pattern correlates much stronger than promoter methylation with expression of putative target genes. When tested in vivo using a transgenic zebrafish assay, 20 out of 20 selected candidate dsDMRs exhibit functional enhancer activities. Our data suggest that developmental enhancers are a major target of DNA methylation changes during embryogenesis. MRE profiles of sperm and 2.5-hpf, 3.5-hpf, 4.5-hpf, 6-hpf and 24-hpf embryos were generated using Illumina HiSeq sequencing.

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Project description:This project aimed at identifying developmental stage specific transcript profiles for catecholaminergic neurons in embryos and early larvae of zebrafish (Danio rerio). Catecholaminergic neurons were labeled using transgenic zebrafish strains to drive expression of GFP. At stages 24, 36, 72 and 96 hrs post fertilization, embryos were dissociated and GFP expressing cells sorted by FACS. Isolated RNAs were processed using either polyA selection and libray generation or NanoCAGE. This is the first effort to determine stage specific mRNA profiles of catecholaminergic neurons in zebrafish.

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Project description:Extensive alternative polyadenylation during zebrafish development

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Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos (MeDIP-seq)

Project description:DNA methylation undergoes dynamic changes during development and cell differentiation. Recent genome-wide studies discovered that tissue-specific differentially methylated regions (DMRs) often overlap tissue-specific distal cis-regulatory elements. However, developmental DNA methylation dynamics of the majority of the genomic CpGs outside gene promoters and CpG islands has not been extensively characterized. Here we generate and compare comprehensive DNA methylome maps of zebrafish developing embryos. From these maps, we identify thousands of developmental stage-specific DMRs (dsDMRs) across zebrafish developmental stages. The dsDMRs contain evolutionarily conserved sequences, are associated with developmental genes and are marked with active enhancer histone posttranslational modifications. Their methylation pattern correlates much stronger than promoter methylation with expression of putative target genes. When tested in vivo using a transgenic zebrafish assay, 20 out of 20 selected candidate dsDMRs exhibit functional enhancer activities. Our data suggest that developmental enhancers are a major target of DNA methylation changes during embryogenesis. MeDIP profiles of sperm and 2.5-hpf, 3.5-hpf, 4.5-hpf, 6-hpf and 24-hpf embryos were generated using Illumina HiSeq sequencing.

2015-02-13 | E-GEOD-52703 | biostudies-arrayexpress

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