Figure 3. Decreased repair of ODD by BER in the presence of shRNA to hOGG1.
(A) mRNA expression of hOGG1 by RTqPCR in isogenic cell lines stably expressing (two different) shRNA to hOGG1 or a non-targeting control shRNA. mRNA expression was calculated by ΔΔCT method. (B) H2O2 and (C) MMS sensitivity in shOGG1-expressing cell lines. Following treatment with increasing concentrations of DNA damaging agent, sensitivity was determined by MTT assay. Each bar represents the average IC50 value ± s.e.m. from at least three independent experiments. (D) BER activity in shOGG1-expressing cell lines. Each bar represents the average GFP expression ± s.e.m. from at least three independent experiments as determined by the BER assay. **, p<0.01; *, p<0.05.