Measurement of oxidized and methylated DNA bases by HPLC with electrochemical detection
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Overview
Analytical study demonstrates simultaneous quantification of multiple oxidized and methylated bases in hydrolyzed DNA, suggesting improved monitoring of cellular damage and cancer risk.
Key Points
- Develop a rapid and sensitive HPLC-electrochemical detection procedure to quantify oxidized and methylated DNA bases in acid hydrolysates.
- Employed high-performance liquid chromatography coupled with electrochemical detection (HPLC-ECD).
- Analyzed acid hydrolysates of DNA to identify and resolve modified purine and pyrimidine bases.
- Achieved rapid, sensitive quantification of four oxidized bases: 2,6-diamino-4-hydroxy-5-formamidopyrimidine, 5-hydroxyuracil, 8-hydroxyguanine, and 8-hydroxyadenine.
- Resolved three methylated bases, specifically 7-methylguanine, 1-methylguanine, and O6-methylguanine, while maintaining clear separation from unmodified guanine.
Cite This Study
Kaur et al. (1996) studied this question.