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Metabolism and activation of carcinogenic polycyclic hydrocarbons by human mammary cells

Authors
Journal
Biochemical and Biophysical Research Communications
0006-291X
Publisher
Elsevier
Publication Date
Volume
95
Issue
4
Identifiers
DOI: 10.1016/s0006-291x(80)80081-7
Disciplines
  • Biology

Abstract

Summary The metabolism of two 3H-labelled hydrocarbons, benzo(a)pyrene and 7,12-dimethylbenz(a)anthracene, into water-soluble and organic solvent-soluble metabolites, including dihydrodiols, has been examined in cultures of mammary epithelial cell aggregates from five individuals. Both hydrocarbons also became bound to the DNA and proteins of the cells. The hydrocarbon-deoxyribonucleoside adducts formed from benzo(a)pyrene closely resembled, when examined by Sephadex LH20 column chromatography, those that are formed, for example, in reactions of the related ‘bay-region’ diol-epoxide with DNA and in mouse skin, a tissue in which this hydrocarbon is carcinogenic.

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