TY - JOUR A1 - Komori, H. Kiyomi A1 - LaMere, Sarah A. A1 - Torkamani, Ali A1 - Hart, G. Traver A1 - Kotsopoulos, Steve A1 - Warner, Jason A1 - Samuels, Michael L. A1 - Olson, Jeff A1 - Head, Steven R. A1 - Ordoukhanian, Phillip A1 - Lee, Pauline L. A1 - Link, Darren R. A1 - Salomon, Daniel R. T1 - Application of microdroplet PCR for large-scale targeted bisulfite sequencing Y1 - 2011/10/01 JF - Genome Research JO - Genome Research SP - 1738 EP - 1745 DO - 10.1101/gr.116863.110 VL - 21 IS - 10 UR - http://genome.cshlp.org/content/21/10/1738.abstract N2 - Cytosine methylation of DNA CpG dinucleotides in gene promoters is an epigenetic modification that regulates gene transcription. While many methods exist to interrogate methylation states, few current methods offer large-scale, targeted, single CpG resolution. We report an approach combining bisulfite treatment followed by microdroplet PCR with next-generation sequencing to assay the methylation state of 50 genes in the regions 1 kb upstream of and downstream from their transcription start sites. This method yielded 96% coverage of the targeted CpGs and demonstrated high correlation between CpG island (CGI) DNA methylation and transcriptional regulation. The method was scaled to interrogate the methylation status of 77,674 CpGs in the promoter regions of 2100 genes in primary CD4 T cells. The 2100 gene library yielded 97% coverage of all targeted CpGs and 99% of the target amplicons. ER -