Browsing ECNIS - Environmental Cancer Risk, Nutrition and Individual Susceptibility by Department
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Phosphotriesters: Long lifetime biomarkers.In addition to reacting with DNA bases, many genotoxic agents react with the oxygen of the internucleotide phosphodiester linkages to form phosphotriester adducts. Several studies have shown that phosphotriester lesions have a half-life that exceeds that of any other DNA alkylation product. The relative abundance of phosphotriesters depends upon the alkylating character of the agent. The role of phosphotriester adducts in carcinogenesis is unknown. Mutation resulting from phosphotriester formation has not been fully studied, but such adducts may influence cellular function by altering the binding of proteins to DNA.