id author title date pages extension mime words sentences flesch summary cache txt cord-321505-m40s6uw9 Sakamoto, Naoya Inhibition of hepatitis C virus infection and expression in vitro and in vivo by recombinant adenovirus expressing short hairpin RNA 2007-08-07 .txt text/plain 4424 253 45 Background and Aim: We have reported previously that synthetic small interfering RNA (siRNA) and DNA‐based siRNA expression vectors efficiently and specifically suppress hepatitis C virus (HCV) replication in vitro. Intravenous delivery of the adenovirus expressing shRNA into transgenic mice that can be induced to express HCV structural proteins by the Cre/loxP switching system resulted in specific suppression of virus protein synthesis in the liver. Here, we report that HCV replication was suppressed in vitro by recombinant retrovirus and adenovirus vectors expressing short hairpin RNA (shRNA) and that the delivery of the adenovirus vector to mice in vivo specifically inhibited viral protein synthesis in the liver. These results indicated that the decrease in luciferase activities was due to specific suppressive effects of shRNA on expression of HCV genomic RNA and the viral proteins, and not due to non-specific effects caused by the delivery of shRNA or to toxicity of the adenovirus vectors. ./cache/cord-321505-m40s6uw9.txt ./txt/cord-321505-m40s6uw9.txt