Research Article

Role of Human NADPH Quinone Oxidoreductase (NQO1) in Oxygen-Mediated Cellular Injury and Oxidative DNA Damage in Human Pulmonary Cells

Figure 4

Hyperoxia decreased DNA adduct formation in 32P-postlabeling experiments, and high cellular levels of NQO1 and CYP1A1 might attenuate such effect. (a) A typical result of a 32P-postlabeling experiment showing chromatographic images labeled with AcA, GcA, CcA, and TcA. (b) Quantitation of the 32P-postlabeling experiment. Three stably transfected BEAS-2B cell lines Ctr, CMV-NQO1, NQO1-NQO1, and SNP (see Figure 2) were incubated under RA or O2 for 48 h, followed by DNA extraction and 32P-postlabeling experiments (; ; ; #).
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