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Deoxyribonucleic acid repair synthesis in permeable human fibroblasts exposed to ultraviolet radiation and N-acetoxy-2-(acetylamino)fluorene.

J D Roberts·M W Lieberman
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2-AcetylaminofluoreneAcetoxyacetylaminofluoreneCell LineDNADNA RepairFibroblastsHumansHydrogen-Ion ConcentrationKineticsPermeabilityUltraviolet RaysXeroderma PigmentosumJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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J D Roberts, M W Lieberman. 1979-10-16. Deoxyribonucleic acid repair synthesis in permeable human fibroblasts exposed to ultraviolet radiation and N-acetoxy-2-(acetylamino)fluorene.. https://doi.org/10.1021/bi00588a007

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PubMed1979

Alkaline stability of guanosine and some of its derivatives modified by the carcinogen N-acetoxyacetylaminofluorene.

The alkaline treatment of Guo, dGuo, dGMP and denatured DNA modified by N-acetoxyacetylaminofluorene (N-AcO-AAF) was performed in 0.1 M NaOH at 40 degrees C. The kinetics of the reaction were followed by ultraviolet absorption and by chromatographic methods and were found different for the four products under study. Circular dichroism spectra show differences in the environment of acetylaminofluorene residue in these products. The alkaline treatment of Guo-AAF (and dGuo-AAF) leads to the formation of three products. These products were separated by thin layer chromatography and by HPLC and were characterized by spectroscopic methods. One is the already known unstable Guo-AF (and respectively dGuo-AF) (1). The other two products are relatively stable products of the transformation of Guo-AF (or dGuo-AF). These last ones present almost identical ultraviolet absorption spectra, but very different circular dichroism spectra.

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