RT Journal Article T1 Effect of Quercetin on Hepatitis C Virus Life Cycle: From Viral to Host Targets. A1 Rojas, Ángela A1 Del Campo, Jose A A1 Clement, Sophie A1 Lemasson, Matthieu A1 García-Valdecasas, Marta A1 Gil-Gómez, Antonio A1 Ranchal, Isidora A1 Bartosch, Birke A1 Bautista, Juan D A1 Rosenberg, Arielle R A1 Negro, Francesco A1 Romero-Gómez, Manuel K1 Antivirales K1 Diacilglicerol o-acetiltransferasa K1 Genoma viral K1 Hepacivirus K1 Hepatitis C K1 Quercetina K1 Regulación hacia arriba AB Quercetin is a natural flavonoid, which has been shown to have anti hepatitis C virus (HCV) properties. However, the exact mechanisms whereby quercetin impacts the HCV life cycle are not fully understood. We assessed the effect of quercetin on different steps of the HCV life cycle in Huh-7.5 cells and primary human hepatocytes (PHH) infected with HCVcc. In both cell types, quercetin significantly decreased i) the viral genome replication; ii) the production of infectious HCV particles and iii) the specific infectivity of the newly produced viral particles (by 85% and 92%, Huh7.5 and PHH respectively). In addition, when applied directly on HCV particles, quercetin reduced their infectivity by 65%, suggesting that it affects the virion integrity. Interestingly, the HCV-induced up-regulation of diacylglycerol acyltransferase (DGAT) and the typical localization of the HCV core protein to the surface of lipid droplets, known to be mediated by DGAT, were both prevented by quercetin. In conclusion, quercetin appears to have direct and host-mediated antiviral effects against HCV. PB Thieme Publishing YR 2016 FD 2016-08-22 LK http://hdl.handle.net/10668/2493 UL http://hdl.handle.net/10668/2493 LA en NO Rojas Á, Del Campo JA, Clement S, Lemasson M, García-Valdecasas M, Gil-Gómez A, et al. Effect of Quercetin on Hepatitis C Virus Life Cycle: From Viral to Host Targets. Sci Rep. 2016 ; 6:31777 NO Journal Article; DS RISalud RD Apr 16, 2025