Abstract
Sulfonated anthraquinones and other anthraquinone derivatives were evaluated for anti-human cytomegalovirus (HCMV) activity, cytotoxicity and genotoxicity. Acid blues 40 and 129, acid black 48, alizarin violet R and reactive blue 2 were the most active compounds having selective indices of greater than 30 and EC 50 values of 4–30 μM. When tested against a clinical isolate, the 4 compounds were 2- to 5-fold less active. The antiviral activity was distinctly separate from the virucidal activity (> 1000 μM). The compounds were weakly toxic to either log phase or stationary cells in most of the following cytotoxicity assays: neutral red uptake assay, lactic acid dehydrogenase assay, trypan blue exclusion assay and radiolabeled macromolecular precursor uptake assays. Using a genotoxicity assay, the comet assay, only reactive blue 2 and acid black 48 were found to cause DNA strand breakage. This occurred at concentrations of 30 and 170 μM, respectively. These results suggest that these compounds could be a prototype for synthesizing even more effective HCMV-inhibitory anthraquinone derivatives.
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