Abstract
Enhanced survival of UV-irradiated HSV-1 is demonstrated in monkey cells exposed to inhibitors of viral DNA synthesis. Phosphonoacetic acid (PAA), adenine arabinoside (ara-A), and cytosine arabinoside (ara-C) pretreatment of infected cells is associated with concentration-dependent reactivation of UV-HSV-1. At concentrations that result in enhanced virus survival, inhibition of cell DNA synthesis is observed by either ara-A or ara-C, but not by PAA. Pretreatment of uninfected cells with acycloguanosine (ACG) is not associated with reactivation of irradiated HSV-1, and this is probably due to insufficient generation of ACG-triphosphate, the active inhibitor of viral and cell DNA synthesis.
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