Cooper CS, Ribeiro O, Farmer PB, Hewer A, Walsh C, Pal K, Grover PL, Sims P. The metabolic activation of benz[a]anthracene in hamster embryo cells: evidence that diol-epoxides react with guanosine, deoxyguanosine and adenosine in nucleic acids.
Chem Biol Interact 1980;
32:209-31. [PMID:
6159115 DOI:
10.1016/0009-2797(80)90079-4]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The principal nucleoside-hydrocarbon adducts present in hydrolysates of RNA and DNA isolated from hamster embryo cells treated with benz[a]anthracene (BA) were examined by chromatography on Sephadex LH 20 and by high pressure liquid chromatography (HPLC) on Spherisorb 5 ODS. The results extend the previous finding that a non-'bay-region' diol-epoxide, anti-BA-8,9-diol 10,11-oxide (r-8,t-9-dihydroxy-t-10,11-oxy-8,9,10,11-tetrahydrobenz[a] anthracene) is involved in the binding of BA to cellular nucleic acids and show that this diol-epoxide most probably reacts with guanosine and adenosine in RNA and with deoxyguanosine in DNA. The results also show that a 'bay-region' diol-epoxide anti-BA-3,4-diol 1,2-oxide (t-3,-4-dihydroxy-t-1,2-oxy-1,2,3,4-tetrahydrobenz[a]anthracene, which is thought to be involved in the binding of benz[a]anthracene, which is thought to be involved in the binding of benz[a]anthracene to DNA in some situations, reacts mainly with deoxyguanosine.
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