Homo sapiens
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ABSTRACT:
PROVIDER: PRJNA231457 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The relationship between DNA methylation, genetic and expression inter-individual variation in untransformed human fibroblasts [methylation profiling]
| PRJNA226264 | ENA
Project description:The relationship between DNA methylation, genetic and expression inter-individual variation in untransformed human fibroblasts [genotyping]
| PRJNA229151 | ENA
Project description:The relationship between DNA methylation, genetic and expression inter-individual variation in untransformed human fibroblasts [Whole genome bisulfite sequencing]
| PRJNA236355 | ENA
Project description:Analysis of the extent to which inter-individual variation in mRNA decay contributes to inter-individual variation in gene expression levels in humans. The study examines properties of genome-wide decay rates and the relationship between mRNA decay and gene expression across genes, across individuals, and finally across genotype classes.
2012-10-01 | GSE37451 | GEO
Project description:Background: DNA methylation has long been known to play an essential role in the epigenetic regulation of gene expression and other cellular functions, and has been in some cases linked to genetic variation. While its presence near the transcription start site of a gene has been associated with reduced expression, the variation in methylation levels across individuals, its environmental or genetic causes, and its association with gene expression remain poorly understood. Results: We report the joint analysis of sequence variants, gene expression and DNA methylation in primary fibroblast samples derived from a set of 62 unrelated individuals. Approximately 2% of the most variable CpG sites are mappable in cis to sequence variation, usually within 5kb. Via eQTL analysis with microarray data combined with mapping of allelic expression regions, we obtained a set of 2770 regions mappable in cis to sequence variation. In 9.5% of these expressed regions, an associated SNP was also a methylation QTL. Methylation and gene expression are often correlated without direct discernible involvement of sequence variation, but not always in the expected direction (negative for promoter CpGs, positive for gene body CpGs). Population-level correlation between methylation and expression is strongest in a subset of developmentally significant genes, including all four HOX clusters. The presence and sign of this correlation are best predicted using specific histone marks or DNase I hypersensitivity rather than position of the CpG site with respect to the gene, showing that other epigenetic markers are necessary to interpret downstream effects of individual methylation variants. Conclusion: Our results indicate a wide variety of relationships between gene expression, DNA methylation and sequence variation in untransformed adult human fibroblasts, with considerable involvement of chromatin features. We note particularly high levels of variation and correlation in DNA methylation and gene expression at key developmental loci, with little discernible involvement of sequence variation.
2013-12-13 | GSE53243 | GEO
Project description:Background DNA methylation has long been known to play an essential role in the epigenetic regulation of gene expression and other cellular functions, and has been in some cases linked to genetic variation. While its presence near the transcription start site of a gene has been associated with reduced expression, the variation in methylation levels across individuals, its environmental or genetic causes, and its association with gene expression remain poorly understood. Results We report the joint analysis of sequence variants, gene expression and DNA methylation in primary fibroblast samples derived from a set of 62 unrelated individuals. Approximately 2% of the most variable CpG sites are mappable in cis to sequence variation, usually within 5kb. However, only 5% of those mappable CpG sites also have methylation levels that correlate in cis with a gene's expression level. Methylation and gene expression are often correlated but not always in the expected direction (negative for promoter CpGs, positive for gene body CpGs). Population-level correlation between methylation and expression is strongest in a subset of developmentally significant genes, including all four HOX clusters. The presence and sign of this correlation are best predicted using specific histone marks or DNase hypersensitivity rather than position of the CpG site with respect to the gene, showing that other epigenetic markers are necessary to interpret downstream effects of individual methylation variants. Conclusion Our results indicate strong relationships between gene expression and DNA methylation in untransformed adult human fibroblasts, with considerable involvement of chromatin features and relatively modest involvement of sequence variation.
2013-12-10 | GSE52025 | GEO
Project description:Background DNA methylation has long been known to play an essential role in the epigenetic regulation of gene expression and other cellular functions, and has been in some cases linked to genetic variation. While its presence near the transcription start site of a gene has been associated with reduced expression, the variation in methylation levels across individuals, its environmental or genetic causes, and its association with gene expression remain poorly understood. Results We report the joint analysis of sequence variants, gene expression and DNA methylation in primary fibroblast samples derived from a set of 62 unrelated individuals. Approximately 2% of the most variable CpG sites are mappable in cis to sequence variation, usually within 5kb. However, only 5% of those mappable CpG sites also have methylation levels that correlate in cis with a gene's expression level. Methylation and gene expression are often correlated but not always in the expected direction (negative for promoter CpGs, positive for gene body CpGs). Population-level correlation between methylation and expression is strongest in a subset of developmentally significant genes, including all four HOX clusters. The presence and sign of this correlation are best predicted using specific histone marks or DNase hypersensitivity rather than position of the CpG site with respect to the gene, showing that other epigenetic markers are necessary to interpret downstream effects of individual methylation variants. Conclusion Our results indicate strong relationships between gene expression and DNA methylation in untransformed adult human fibroblasts, with considerable involvement of chromatin features and relatively modest involvement of sequence variation.
2014-01-25 | GSE54373 | GEO
Project description:Background DNA methylation has long been known to play an essential role in the epigenetic regulation of gene expression and other cellular functions, and has been in some cases linked to genetic variation. While its presence near the transcription start site of a gene has been associated with reduced expression, the variation in methylation levels across individuals, its environmental or genetic causes, and its association with gene expression remain poorly understood. Results We report the joint analysis of sequence variants, gene expression and DNA methylation in primary fibroblast samples derived from a set of 62 unrelated individuals. Approximately 2% of the most variable CpG sites are mappable in cis to sequence variation, usually within 5kb. However, only 5% of those mappable CpG sites also have methylation levels that correlate in cis with a gene's expression level. Methylation and gene expression are often correlated but not always in the expected direction (negative for promoter CpGs, positive for gene body CpGs). Population-level correlation between methylation and expression is strongest in a subset of developmentally significant genes, including all four HOX clusters. The presence and sign of this correlation are best predicted using specific histone marks or DNase hypersensitivity rather than position of the CpG site with respect to the gene, showing that other epigenetic markers are necessary to interpret downstream effects of individual methylation variants. Conclusion Our results indicate strong relationships between gene expression and DNA methylation in untransformed adult human fibroblasts, with considerable involvement of chromatin features and relatively modest involvement of sequence variation.
2013-12-11 | GSE52442 | GEO
Project description:Background DNA methylation has long been known to play an essential role in the epigenetic regulation of gene expression and other cellular functions, and has been in some cases linked to genetic variation. While its presence near the transcription start site of a gene has been associated with reduced expression, the variation in methylation levels across individuals, its environmental or genetic causes, and its association with gene expression remain poorly understood. Results We report the joint analysis of sequence variants, gene expression and DNA methylation in primary fibroblast samples derived from a set of 62 unrelated individuals. Approximately 2% of the most variable CpG sites are mappable in cis to sequence variation, usually within 5kb. However, only 5% of those mappable CpG sites also have methylation levels that correlate in cis with a gene's expression level. Methylation and gene expression are often correlated but not always in the expected direction (negative for promoter CpGs, positive for gene body CpGs). Population-level correlation between methylation and expression is strongest in a subset of developmentally significant genes, including all four HOX clusters. The presence and sign of this correlation are best predicted using specific histone marks or DNase hypersensitivity rather than position of the CpG site with respect to the gene, showing that other epigenetic markers are necessary to interpret downstream effects of individual methylation variants. Conclusion Our results indicate strong relationships between gene expression and DNA methylation in untransformed adult human fibroblasts, with considerable involvement of chromatin features and relatively modest involvement of sequence variation. 62 human skin fibroblast samples obtained from Coriell and McGill Cellbank, bisulfite converted DNA was hybridized to the Illumina Infinium 450K chip.
2013-12-10 | E-GEOD-52025 | biostudies-arrayexpress