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  • Title: The relationship between the antiviral activity of 5'-amino-5'-deoxythymidine and its incorporation into herpes simplex virus type 1 DNA.
    Author: Otto MJ, Prusoff WH.
    Journal: Antiviral Res; 1984 Oct; 4(5):271-80. PubMed ID: 6097180.
    Abstract:
    As part of our studies on the molecular basis for the antiherpes activity of 5'-AdThd (5'-amino-5'-deoxythymidine), a study of the HSV-1 DNA synthesized in infected Vero cells exposed to 5'-AdThd was undertaken. Unlike many other antiviral nucleoside analogs, 5'-AdThd did not inhibit HSV-1 DNA synthesis. Analysis of the DNA synthesized in the presence of [14C]5'-AdThd revealed that the analog was incorporated into the viral DNA in a dose-dependent manner and that the degree of incorporation correlated with the antiviral activity as measured by yield reduction assays. Analysis of the 5'-AdThd substituted DNA by centrifugation in neutral and alkaline sucrose gradients revealed no double-stranded breaks but an increase in single-stranded breaks, at very high concentrations of the analog. Analysis of HSV-1-specific RNAs revealed a shift from poly(A+) to poly(A-) RNA. The degree of this shift paralleled the substitution of 5'-AdThd for thymidine in the HSV-1 DNA.
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