Interaction of nitroimidazole drugs with DNA in vitro: Structure-activity relationships
Author(s) -
R.J. Knox,
R.C. Knight,
David Edwards
Publication year - 1981
Publication title -
british journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.833
H-Index - 236
eISSN - 1532-1827
pISSN - 0007-0920
DOI - 10.1038/bjc.1981.261
Subject(s) - nitroimidazole , dna , drug , in vitro , dna damage , cytotoxic t cell , chemistry , mechanism of action , bacteria , pharmacology , biology , biochemistry , genetics , organic chemistry
An electrolytic reduction system has been developed to model the cytotoxic action of a range of nitroimidazole drugs against DNA hypoxic cells or anaerobic microorganisms. THe degree of damage induced by these drugs (measured as the release of [14C]-dT from DNA) and their relative rates of reduction have been correlated with their redox potentials. The results show that the correlation of drug-induced damage and electron affinity is related to the amount of drug reduced, and supports the hypothesis that at the molecular level the cytotoxic mechanism of reduced nitroimidazoles is identical in hypoxic mammalian cells, bacteria and protozoa.
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