Intracellular RNA and viral production were measured in the supernatant 48 hours post-infection. The maximum inhibition of infection (−2 Log10 lU/mL in TCID50/mL compared to untreated cells or vehicletreated control cells) was observed when MK886 was present at the early and late steps of JFH1 infection, suggesting that more than one step of the JFH1 lifecycle were blocked. In contrast, CP868388 ligand inhibited only the early step of JFH1 infection (−1.10 Log10 in TCID50/mL), whereas GW6471 ligand had only a weak effect on JFH1 infection (−0.5 to 1.0 Log10 lU/mL in TCID50/mL at 5 μM and

10 μM, respectively), without targeting a specific step. Neither IFN treatment nor JFH1 infection had an effect on PPAR alpha and gamma

mRNA and protein expressions. Smoothened Agonist order In addition, shRNA-mediated suppression of PDIP1 resulted in a significant reduction of JFH1core positive cells after PPAR alpha ligand treatment, similar to what was observed in Lapatinib ic50 Huh/.5.1 cells. Conclusions: PPAR alpha ligands exert antiviral activity against JFH1 infection in a hepatoma cell line. Our findings suggest that the antiviral effect of PPAR alpha ligand is PDIP1-dependent. Disclosures: Raymond T. Chung – Advisory Committees or Review Panels: Idenix; Consulting: Enanta; Grant/Research Support: Gilead, Merck, Mass Biologic, Gilead The followinq people have nothinq to disclose: Stephane Chevaliez, Cynthia Brisac, Esperance A. Schaefer, Daniel Wambua, Nikolaus Jilq, Jay Luther, selleck chemicals llc Pattranuch Chusri, Laurent Zablocki, Wenyu Lin, Lee F. Peng, Dahlene N. Fusco Background and aims: Hepatitis C virus (HCV) is a positivestrand RNA virus of the Flaviviridae family, whose life cycle is tightly associated with lipid metabolism. HCV assembly and maturation start at the surface of lipid droplets, while viral egress depends on

very-low density lipoprotein secretion. In order to better understand the relationship between HCV and lipid metabolism, we analyzed the impact of lipid droplets on HCV life cycle with a particular focus on Adipose Differentiation-Related Protein (ADRP), a lipid droplet-associated protein. Methods: We transduced human hepatoma cells (Huh-7) with a lentiviral vector expressing ADRP and evaluated the impact of ADRP overexpression on (i) lipid droplet morphology and (ii) HCV life cycle and viral particle production in the setting of infection with a cell cultured-derived HCV (full length Jc1 construct). We assessed the effect of ADRP on HCV entry with the HCV pseudoparticles system and by measuring the expression level of HCV receptors (i. e. CD81, Low-Density Lipoprotein Receptor, Scavenger receptor class B member 1, Claudin 1, 〇ccludin, Niemann-Pick disease type C1)by quantitative realtime PCR. Results: ADRP mRNA expression level was increased by 2-fold during the course of Jc1 infection.