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Correlated DNA methylation clusters in whole blood

ABSTRACT: Genome-wide DNA methylation level was studied to identify the clustering of correlated DNA methylation at CpGs in whole blood. We used Illumina HumanMethylation450 BeadChip array to identify the clustering of correlated DNA methylation in whole blood from normal individuals from Baltimore Longitudinal Study of Aging (BLSA).

ORGANISM(S): Homo sapiens

PROVIDER: GSE54882 | GEO | 2014/03/25

SECONDARY ACCESSION(S): PRJNA237964

REPOSITORIES: GEO

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Project description:Genome-wide DNA methylation level was studied to identify the clustering of correlated DNA methylation at CpGs in whole blood. We used Illumina HumanMethylation450 BeadChip array to identify the clustering of correlated DNA methylation in whole blood from normal individuals from Baltimore Longitudinal Study of Aging (BLSA). Bisulphite converted DNA from normal individuals were hybridized to the Illumina Illumina HumanMethylation450 BeadChip arrays

2014-03-25 | E-GEOD-54882 | biostudies-arrayexpress

Homo sapiens

Project description:Correlated DNA methylation clusters in whole blood

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Project description:This SuperSeries is composed of the following subset Series: GSE41751: Correlated alterations in genome organization, histone methylation, and DNA-lamina interactions in Hutchinson-Gilford progeria syndrome (expression) GSE41757: Correlated alterations in genome organization, histone methylation, and DNA-lamina interactions in Hutchinson-Gilford progeria syndrome (ChIP-seq) GSE41763: Correlated alterations in genome organization, histone methylation, and DNA-lamina interactions in Hutchinson-Gilford progeria syndrome (Hi-C) Refer to individual Series

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Detection of methylation of genomic DNA from lung cancer and correlated nornal tissue

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Project description:Human fibroblast of different age were investigated for their gene expression profiles in quiescence. Cultures were established from skin samples derived from young and old donors, obtained from the NIA Aging Cell Repository (Coriell Institute for Medical Research, Camden, NJ). All cell lines originated from 2 mm punch biopsies taken from the medial aspect of the upper arm. The donors were members of the Baltimore Longitudinal Study of Aging (BLSA) where they were characterized as "healthy" indviduals. The cell lines investigated had normal karyotypes.

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Detection of methylation of genomic DNA from lung cancer and correlated nornal tissue

Project description:Detection of methylation of genomic DNA from lung cancer and correlated nornal tissue

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Cord blood buffy coat DNA methylation is comparable to whole cord blood methylation

Project description:Cord blood DNA methylation is associated with numerous health outcomes and environmental exposures. Whole cord blood DNA reflects all nucleated blood cell types, while centrifuging whole blood separates red blood cells by generating a white blood cell buffy coat. Both sample types are used in DNA methylation studies. Cell types have unique methylation patterns and processing can impact cell distributions, which may influence comparability. To evaluate differences in cell composition and DNA methylation between buffy coat and whole cord blood samples, cord blood DNA methylation was measured with the Infinium EPIC BeadChip (Illumina) in 8 individuals, each contributing buffy coat and whole blood samples.

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DNA Methylation Changes in Whole Blood and CD16+ Neutrophils in Response to Chronic Folic Acid Supplementation in Women of Childbearing Age

Project description:Folate, a water-soluble vitamin, is a key source of one-carbon groups for DNA methylation, but studies of the DNA methylation response to supplemental folic acid yield inconsistent results. The aim of this study was to determine if DNA methylation patterns in the dominant white blood cell type, neutrophils, would respond differently than whole blood in response to chronic folic acid supplementation. Saliva and blood methylation was clearly distinguishable though there was positive correlation overall. There was little correlation in CpG sites within relevant candidate genes. Correlated CpG sites were more likely to occur in areas of low CpG density (i.e. CpG shores and open seas). There was more variability in CpG sites from saliva than blood, which may reflect its heterogeneity. Thus, this study provides a framework for using DNA methylation from saliva and suggests that DNA methylation of saliva may offer distinct opportunities for epidemiological and longitudinal studies of psychiatric traits. DNA methylation was assessed in whole blood and CD16+ neutrophils from obese and normal weight adult women undergoing 8 weeks of folate supplementation. Blood was collected in EDTA vacuum tubes, and CD16+ nutrophils were isolated by positive selection with Dynabeads. DNA was extracted using the DNeasy Kit (Qiagen). DNA methylation was interrogated for each sample using the HumanMethylation450 BeadChip (Illumina).

2014-11-21 | E-GEOD-63499 | biostudies-arrayexpress

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