Fig. 5.
UA decreases Nrf2 promoter DNA methylation in JB6 P+ cells. The cells were treated with each concentration of UA for 3 days, and then the genomic DNA was isolated for bisulfite conversion. The methylation status of the first 15 CpG sites, the region between -1226 and -863 relative to the translational start site, within the promoter of Nrf2, was analyzed. Positive control cells were treated with 5-aza (250 nM) for 48 h and TSA (50 nM) for 24 h. Ten individual clones were analyzed. The filled and open dots indicate methylated and unmethylated CpG. The data are expressed as a percentage of the total number of methylated cytosines vs. total 15 CpGs of three independent experiments.