Abstract
There is an outmost need for the identification of specific antiviral compounds. Current antivirals lack specificity, making them susceptible to off-target effects, and highlighting importance of development of assays to discover antivirals targeting viral specific proteins. Previous studies for identification of inhibitors of RNA-dependent RNA polymerase (RdRp) mostly relied on radioactive methods. This study describes a fluorometric approach to assess in vitro activity of viral RdRp for drug screening. Using readily available DNA- and RNA-specific fluorophores, we determined an optimum fluorometric approach that could be used in antiviral discovery specifically for RNA viruses by targeting RdRp. Here, we show that double-stranded RNA could be successfully distinguished from single-stranded RNA. In addition, we provide a strategy based on self-priming RNA to assess RdRp activity.
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