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Antiviral effect of ribonuclease conjugated oligodeoxynucleotides targeting the IRES RNA of the hepatitis C virus.

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Gamble, Carly | Trotard, Maud | Le Seyec, Jacques | Abreu-Guerniou, Valérie | Gernigon, Nicolas | Berrée, Fabienne | Carboni, Bertrand | Felden, Brice | Gillet, Reynald

Edité par CCSD ; Elsevier -

International audience. Hepatitis C virus (HCV) translation initiation is mediated by a highly structured and conserved RNA, termed the Internal Ribosome Entry Site (IRES), located at the 5'-end of its single stranded RNA genome. It is a key target for the development of new antiviral compounds. Here we made use of the recently developed HCV cell culture system to test the antiviral activity of artificial ribonucleases consisting of imidazole(s) linked to antisense oligodeoxynucleotides targeting the HCV IRES. Results from the cell culture model indicate that the naked antisense oligodeoxynucleotide displayed an efficient antiviral activity. Despite the increased activity observed with the addition of imidazole moieties when tested with the cell-free system, it appears that these improvements were not reproduced in the cellular model.

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