DNA Methylation Profiling Using Infinium Methylation Assay
نویسندگان
چکیده
منابع مشابه
Comprehensive DNA Methylation Analysis on the Illumina® Infinium® Assay Platform
DNA methylation and chromatin modifications have been shown to be important markings in gene expression regulation, development, genetic imprinting, and the suppression of repetitive elements1. In addition, DNA methylation alterations are ubiquitous in human cancers, as promoter CpG island hypermethylation occurs in the context of a global decrease in methylation2. These widespread phenomena ma...
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A formalin-fixed paraffin-embedded (FFPE) sample usually yields highly degraded DNA, which limits the use of techniques requiring high-quality DNA, such as Infinium Methylation microarrays. To overcome this restriction, we have applied an FFPE restoration procedure consisting of DNA repair and ligation processes in a set of paired fresh-frozen (FF) and FFPE samples. We validated the FFPE result...
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The Illumina Infinium MethylationEPIC provides an efficient platform for profiling DNA methylation in humans at over 850,000 CpGs. Model organisms such as mice do not currently benefit from an equivalent array. Here we used this array to measure DNA methylation in mice. We defined probes targeting conserved regions and performed differential methylation analysis and compared between the array-b...
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We propose a novel approach to background correction for Infinium HumanMethylation data to account for technical variation in background fluorescence signal. Our approach capitalizes on a new use for the Infinium I design bead types to measure non-specific fluorescence in the colour channel opposite of their design (Cy3/Cy5). This provides tens of thousands of features for measuring background ...
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Epigenetic modifications of DNA, such as cytosine methylation are differentially abundant in diseases such as cancer. A goal for clinical research is finding sites that are differentially methylated between groups of samples to act as potential biomarkers for disease outcome. However, clinical samples are often limited in availability, represent a heterogeneous collection of cells or are of unc...
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ژورنال
عنوان ژورنال: BIO-PROTOCOL
سال: 2013
ISSN: 2331-8325
DOI: 10.21769/bioprotoc.777