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Migliaccio, Giovanni; Tomassini, Joanne E.; Carroll, Steven S.; Tomei, Licia; Altamura, Sergio; Bhat, Balkrishen; Bartholomew, Linda; Bosserman, Michele R.; Ceccacci, Alessandra; Colwell, Lawrence F.; Cortese, Riccardo; De Francesco, Raffaele; Eldrup, Anne B.; Getty, Krista L.; Hou, Xiaoli S.; LaFemina, Robert L.; Ludmerer, Steven W.; MacCoss, Malcolm; McMasters, Daniel R.; Stahlhut, Mark W.; Olsen, David B.; Hazuda, Daria J.; Flores, Osvaldo A.
Journal of biological chemistry/The Journal of biological chemistry, 12/2003, Letnik: 278, Številka: 49Journal Article
The urgent need for efficacious drugs to treat chronic hepatitis C virus (HCV) infection requires a concerted effort to develop inhibitors specific for virally encoded enzymes. We demonstrate that 2′-C-methyl ribonucleosides are efficient chain-terminating inhibitors of HCV genome replication. Characterization of drug-resistant HCV replicons defined a single S282T mutation within the active site of the viral polymerase that conferred loss of sensitivity to structurally related compounds in both replicon and isolated polymerase assays. Biochemical analyses demonstrated that resistance at the level of the enzyme results from a combination of reduced affinity of the mutant polymerase for the drug and an increased ability to extend the incorporated nucleoside analog. Importantly, the combination of these agents with interferon-α results in synergistic inhibition of HCV genome replication in cell culture. Furthermore, 2′-C-methyl-substituted ribonucleosides also inhibited replication of genetically related viruses such as bovine diarrhea virus, yellow fever, and West African Nile viruses. These observations, together with the finding that 2′-C-methyl-guanosine in particular has a favorable pharmacological profile, suggest that this class of compounds may have broad utility in the treatment of HCV and other flavivirus infections.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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