Abstract
DNA methylation is an important epigenetic mechanism involved in proper genome function. Bisulfite pyrosequencing (PSQ) is a commonly used technique to quantify DNA methylation. Although very accurate, bisulfite pyrosequencing can be expensive and time consuming for large-scale quantitative DNA methylation analysis at the single nucleotide level. High throughput DNA methylation sequencing has the potential to address these limitations, but its comparability to other methylation detection methods has not been well studied. We compared QIAseq Targeted Methyl Panel technologies (QMS) and PSQ by analyzing four CpG sites within four genes involved in neurodevelopment. QMS and PSQ had an average 5.6% difference in the detected level of DNA methylation for the same four CpG sites. However, we observed a strong correlation in the levels of methylation across all four CpG sites between the two technologies. These findings demonstrate the comparability of QMS relative to PSQ in the ability to accurately quantify DNA methylation at specific CpG sites.
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