Genome-wide mapping of 8-oxodG and gH2AX in growing MCF10A cells and MEFs

8-oxo-7,8-dihydro-2'-deoxyguanine (8-oxodG) is one of the major DNA modifications and a potent pre-mutagenic lesion prone to mispair with deoxyadenine (dA). Several thousand residues of 8-oxodG spread constitutively in the genome of human cells, but their genomic distribution has not yet been characterized. Here, by using OxyDIP-Seq, a highly sensitive methodology that uses high-throughput sequencing, we report the first genome-wide distribution of 8-oxodG in human cells, using the non-tumorigenic epithelial breast cells MFC10A. Results were compared with those we obtained in mouse embryo fibroblasts. OxyDIP-Seq revealed sites of 8-oxodG accumulation overlapping with gH2AX ChIP-Seq signals within gene bodies of long transcribed genes. Overall design: Genome-wide maps of 8-oxodG and gH2AX in growing MCF10A and MEF cells.