Worldwide more than 130 million people are
|
|
- Trevor O’Brien’
- 5 years ago
- Views:
Transcription
1 RAPID COMMUNICATION Cyclosporine A Inhibits Hepatitis C Virus Nonstructural Protein 2 Through Cyclophilin A Sandra Ciesek, 1,2 Eike Steinmann, 2 Heiner Wedemeyer, 1 Michael P. Manns, 1 Johann Neyts, 3 Norbert Tautz, 4 Vanesa Madan, 5 Ralf Bartenschlager, 5 Thomas von Hahn, 1,2 and Thomas Pietschmann 2 Numerous anti-hepatitis C virus (HCV) drugs targeting either the viral nonstructural 3 (NS3) protease or NS5B polymerase are currently in clinical testing. However, rapid resistance development is a major problem and optimal therapy will clearly require a combination of multiple mechanisms of action. Cyclosporine A (CsA) and its nonimmunosuppressant derivatives are among the more promising drugs under development. Based on work with subgenomic HCV replicons it has been thought that they act as NS5B-inhibitors. In this study we show that CsA inhibits replication of full-length HCV Japanese Fulminant Hepatitis (JFH1) genomes about 10-fold more efficiently than subgenomic replicons. This effect is dependent on the presence of NS2 in the viral polyprotein and mediated through cellular cyclophilin A. NS2 is either an additional target for CsA-dependent inhibition or modulates the antiviral activity against NS3 to NS5B proteins. CsA is thus the first anti-hcv drug shown to act through NS2. Conclusion: CsA inhibits replication of JFH1 full-length genomes much more efficiently than subgenomic replicons by targeting cleavage at the NS2/NS3 junction and possibly other nonreplication lifecycle steps. (HEPATOLOGY 2009;50: ) Worldwide more than 130 million people are chronically infected with hepatitis C virus (HCV), a highly variable enveloped RNA virus of the Flaviviridae family, that causes chronic liver Abbreviations: CsA, cyclosporine A; CyP, cyclophilin; HCV, hepatitis C virus; IRES, internal ribosome entry site; NS, nonstructural. From the 1 Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Germany; 2 Division of Experimental Virology, TWINCORE, Centre for Experimental and Clinical Infection Research; a joint venture between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI); 3 Rega Institute for Medical Research, KU Leuven, Leuven, Belgium; 4 Department of Virology and Cell Biology, University of Lübeck, Germany; 5 Department of Molecular Virology, University of Heidelberg, Germany. Received June 15, 2009; accepted August 24, S.C. was supported by IFB-TX, a program of MHH funded by the Deutsche Forschungs-gemeinschaft, an intramural young investigator award of the HILF initiative, and by a grant from the women support program of the Hannover Medical school. Novartis and DebioPharm supported the study by providing reagents. T.P. was supported by grants from the Helmholtz Association SO-024 and HA-202. Address reprint requests to: Prof. Dr. rer. nat. Thomas Pietschmann, Division of Experimental Virology, TWINCORE Center for Experimental and Clinical Infection Research, Feodor-Lynen-Stra e 7-9, Hannover, Germany. thomas.pietschmann@twincore.de; fax: Copyright 2009 by the American Association for the Study of Liver Diseases. Published online in Wiley InterScience ( DOI /hep Potential conflicts of interest: Dr. Ciesek received grants from Novartis. Dr. Wedemeyer advises, is on the speakers bureau, and grants Novartis. Dr. Manns is a consultant, advises, is on the speakers bureau of, and received grants from Novartis. He also received grants from Debio. Additional Supporting Information may be found in the online version of this article. diseases, including chronic hepatitis, cirrhosis, and hepatocellular carcinoma. 1 The HCV genome encodes a single polyprotein that is cleaved into at least 10 viral proteins: the structural proteins (core, E1, E2) that constitute the virion, the p7 ion channel, and six nonstructural (NS) proteins (NS2, 3, 4A, 4B, 5A, and 5B). NS3-5B are sufficient to sustain RNA replication. 2 NS2 is a cysteine protease that cleaves the NS2-3 junction and requires an N-terminal part of NS3 as a cofactor and plays a crucial but vaguely defined role during virus assembly. 3,4 Recently, a cell culture system, based on the Japanese Fulminant Hepatitis (JFH1) HCV isolate, which reproduces the complete viral replication cycle in vitro, was developed. 5 In this study we used this system to assess the impact of CsA on HCV RNA replication, virus production, and infectivity. The immunosuppressive drug cyclosporine A (CsA) has been shown to be active against HCV in vitro and in vivo. 6,7 The two CsA-derivatives Debio-025 and NIM811 lacking anticalcineurin activity (determinant for the immunosuppressive effect of CsA) are now in human trials as HCV inhibitors, with initial data showing good activity and no signs of clinically relevant resistance. 8,9 The antiviral effect of CsA and cyclosporine derivatives were linked to their ability to interact with cyclophilins (CyPs), which in turn were recognized as essential cellular cofactors for HCV. 10,11 CyPs are part of 1638
2 HEPATOLOGY, Vol. 50, No. 5, 2009 CIESEK ET AL a family of cellular peptidyl-prolyl-isomerases. Because in subgenomic HCV replicons, minimal replicating genomes comprising NS3-NS5B, various viral CsA-resistance mutations were found to map to NS5B and cyclophilin B (CypB) was found to associate with NS5B and to stimulate its RNA binding activity, it is believed that NS5B is the primary target of CsA. 12,13 However, standard subgenomic replicons do not express HCV proteins core, E1, E2, p7, and NS2. Thus, it is unclear if the function of any of these proteins is also affected by CsA or if these proteins modulate the antiviral effect of CsA. Our results reveal that CsA inhibits replication of JFH1-derived full-length genomes much more efficiently than subgenomic replicons. We show that NS2 is an additional and possibly more important target for CsA- and Debio-025 than NS5B and that CsA targets NS2 by way of cyclophilin A (CypA). Materials and Methods Drugs. Cyclosporine A was provided by Novartis (Basel, Switzerland). Tacrolimus and interferon (IFN) alpha were purchased from Sigma-Aldrich (Seelze, Germany). Debio-025 (D-MeAla 3 -EtVal 4 -cyclosporine) was provided by Debiopharm (Lausanne, Switzerland). The NS5B polymerase inhibitors JT-16 and 4-azidocytidine were synthesized by Prof. Herdewijn (Leuven, Belgium). 2-C-methyladenosine (2-CMA) was a gift from Tim Tellinghuisen (Jupiter, FL). Plasmids. Construction of the reporter virus genome Luc-Jc1, Luc-JFH1 NS3-5B, Luc-JFH1, Luc-JFH1/ p7, and Luc-JFH1/ E1,E2 have been described recently. 14 Individual genomes used are shown in Figs. 1A, 3A, and 4A. Detailed cloning strategies are available on request. HCV Replication Assay. HCV replication assay was performed as described. 14 Four hours after transfection, different inhibitors were added to the cell culture medium. Quantitative Detection Core Protein. HCV core protein was measured using an HCV core antigen kit (Wako Chemicals, Neuss, Germany). Stable Knockdown and CypA Rescue Cell Lines. For CypA and CypB knockdown, microrna-based short hairpin RNA (shrna) lentiviral vectors were used encoding the puromycin resistance gene and an shrna targeting CypA, CypB, or a control shrna targeting luciferase. The shrna targeting sequences were: luciferase, 5 -tacaaacgctctcatcgacaag-3 (not present in the luciferase gene of the reporter replicon and reporter virus), CypA, 5 -ctggattgcagagttaagttta-3 ; and CypB, 5 -gccgggtgatctttggtctctt-3. For rescue of CypA expression, CypA knockdown cells were transduced with lentiviral vectors expressing wildtype or isomerase-defective CypA (H126Q mutant). Detailed sequence information of these vectors is available on request. Antibodies. For immunoblotting, commercial antibodies against CypA (antimouse, monoclonal; Abcam, Cambridge, UK) and CypB (antirabbit, polyclonal; Dianova, Hamburg, Germany) were used. Results Cyclosporine A and Debio-025 Inhibit Replication of a JFH1-Derived Full-Length Genome Much More Efficiently than a Subgenomic Replicon. To evaluate the effects of CsA on HCV replication and infectivity, we used firefly luciferase reporter viruses (Fig. 1A). Huh-7.5 cells were transfected with the reporter virus genome and 4 hours later CsA was added with increasing doses. RNA replication efficiency was assessed 48 hours after transfection using luciferase assays. In parallel, the supernatant was used to inoculate naïve cells in order to detect a possible influence of the drugs on virus production and infectivity. High concentrations of CsA decreased RNA replication of both the subgenomic replicon and full-length virus by about 4 logs. Sensitivity of the replicon toward CsA was similar to what has been reported. 15 However, in our side-by-side comparison full-length virus showed a 10- fold lower median inhibitory concentration (IC 50 ) (0.15 g/ml versus 1 g/ml), indicating a markedly increased sensitivity to CsA-inhibition (Fig. 1B). When infection of supernatant-inoculated cells was analyzed the observed IC 50 was another 30-fold lower at g/ml, suggesting that CsA may inhibit other viral lifecycle steps in addition to replication (Fig. 1C). Debio-025, a nonimmunosuppressive cyclosporine derivative that does not display calcineurin affinity, showed a similar difference when comparing subgenomic RNA and Jc1 full-length RNA (Fig. 1D). In Contrast to CsA, IFN and Different NS5B Polymerase Inhibitors Block Subgenomic and Full-Length Genomes with Comparable Efficiency and IC 50 Does Not Differ Between Replication and Infectivity. To ensure that the differential susceptibility to CsA is not solely attributable to dissimilar RNA replication efficiency of the full-length genome and subgenomic replicons, we next compared inhibition of HCV RNA replication by other HCV inhibitors including IFN alpha and three NS5B polymerase inhibitors, JT-16, 4-azidocytidine, and 2-CMA. As shown in Fig. 2, we observed similar IC 50 values for the infectious model and the subgenomic replicon in all cases (Fig. 2A-D). Moreover, RNA replication and infectivity in supernatant were equally sensitive to 2-CMA inhibition (Fig. 2D,E).
3 1640 CIESEK ET AL. HEPATOLOGY, November 2009 Fig. 1. Differential effect of cyclosporine A and Debio-025 on HCV RNA replication and virus infection. (A) Schematic representation of the constructs used. J6CF-derived genome segments are depicted in dark gray, JFH1-derived portions are light gray. (B) HCV RNA replication in Huh-7.5 cells 48 hours after transfection with Jc1-Luc or subgenomic RNA. CsA was added 4 hours after transfection. (C) Culture fluid of these cells was used to inoculate naïve Huh-7.5 cells. (D) Inhibition of RNA replication by Debio-025. These data indicate that direct NS5B inhibitors, different from CsA, have no additional inhibitory effects on fulllength genomes and on lifecycle steps other than RNA replication. Increased Sensitivity to CsA Is Associated with HCV NS2. To identify the putative additional CsA target in full-length virus, different HCV genomes with deletions of the structural proteins core, E1, and E2 or p7 as well as a deletion of the entire structural region were constructed (Fig. 3A). All of these behaved like full-length virus, i.e., were inhibited with a 5-fold to 10-fold lower IC 50 compared to a replicon encoding NS3-5B only (Fig. 3B,C). Thus, addition of NS2 alone to a subgenomic replicon is sufficient to confer enhanced CsA sensitivity, indicating that NS2 is the additional target for CsA-dependent inhibition. The Additional Inhibitory Effect of CsA Is Detectable Only When Replication Depends on Cleavage of the NS2/NS3 Junction. To investigate the interplay between CsA and NS2-3 protease function, full-length genomes with an internal ribosome entry site (IRES) between p7/ns2, NS2/NS3, respectively, were created (Fig. 4A). In case of the former, HCV RNA replication depends on a functional NS2-3 protease cleaving at the NS2/3 site, whereas for the latter, RNA replication is uncoupled from this enzymatic activity. As shown in Fig. 4B, insertion of an IRES between NS2 and NS3 lowered CsA sensitivity more than 10-fold with regard to RNA
4 HEPATOLOGY, Vol. 50, No. 5, 2009 CIESEK ET AL Fig. 2. IFN alpha and different polymerase inhibitors decrease replication of subgenomic and fulllength genomes with comparable efficiency. (A-D) Inhibition of RNA replication by interferon and three different specific NS5B polymerase inhibitors. (E) Inoculation of Huh-7.5 cells with supernatant from the two C-methyladenosine-treated cells shown in Fig. 2D. replication, release of core, and infectivity. Thus, the presence of NS2 causes enhanced CsA-sensitivity only when replication depends on cleavage of the NS2/3 junction, suggesting that the effect may be associated with NS2-3 protease function. To rule out that disruption of the RNA nucleotide sequence at the NS2/NS3 junction alone decreases susceptibility to CsA, we confirmed that a genome encoding NS2 and the NS3 protease domain and thus maintaining the NS2-3 junction in front of the IRES also displays lower susceptibility compared to genomes that require NS2/NS3 cleavage for replication (Fig. 4C). The Additional Inhibitory Effect of CsA Is Independent from Calcineurin but Depends on Cyclophilin A. The complex of CyP and the immunosuppressive drug cyclosporine A binds to and inhibits calcineurin, a cellular phosphatase and a key mediator of T-cell activation. To investigate if the increased sensitivity to CsA is mediated by calcineurin, we measured HCV RNA replication in the presence of the cyclophilin independent calcineurin inhibitor tacrolimus. We observed no effect on HCV RNA replication of either subgenomic or full-length genomes (Fig. 5A). To further characterize whether CsA acts on NS2 by way of CyPs we used Huh7-Lunet cells with a stable knockdown of CypA or CypB. As shown in Fig. 5B, 72 hours posttransfection of given HCV constructs into the individual cell lines, we only observed inhibition of HCV RNA replication in CypA knockdown cells for genomes where NS2 is part of the polyprotein (Jc1 and JFH NS2-5B). In contrast, replication of the sub-
5 1642 CIESEK ET AL. HEPATOLOGY, November 2009 Fig. 3. Increased sensitivity to CsA is independent of HCV proteins core, E1, E2, and p7, but associated with HCV NS2. (A) Schematic representation of used constructs. (B,C) Inhibition of RNA replication of the above recombinant HCV genomes by CsA. genomic replicon (NS3-5B) and the full-length construct where an interposed IRES separates NS2 from NS3 was not impaired. These results support that CsA targets NS2 by way of CypA, possibly through interference with NS2-3 cleavage. Peptidyl-prolyl-Isomerase Activity of Cyclophilin A Is Important for NS2/3 Protease Function. One major function of CyPs is to catalyze cis-trans peptidyl-prolyl isomerization during protein folding by way of their peptidyl-prolyl-isomerase activity. Therefore, CyP inhibition may prevent adequate peptidyl-prolyl isomerization of the NS2-NS3 protease, precluding correct protein folding and in turn NS2-3 protease activity. To investigate if the peptidyl-prolyl-isomerase activity of CypA is important for NS2-NS3 protease function, we restored CypA expression in Huh7-Lunet CypA knockdown cells either with wildtype CypA or with a CypA mutant (H126Q) that possesses less than 1% of wildtype isomerase activity. 16 As shown in Fig. 6, efficient replication of the Luc- Jc1 full-length genome and the NS2-5B replicon was only restored when wildtype CypA was introduced, but not with the H126Q mutant. These results argue that the isomerase activity of CypA is essential for efficient replication of HCV genomes that depend on NS2/NS3 cleavage for RNA replication. Discussion In this study we show that CsA and derivatives inhibit HCV infection in a multifold manner: Besides the described effects on NS5B function that have been characterized by others using mostly subgenomic replicons, 8,11-13,17,18 we found a markedly enhanced sensitivity to CsA in full-length virus. Replication of fulllength genomes is inhibited more strongly and there is an additional inhibitory CsA effect on other viral life-
6 HEPATOLOGY, Vol. 50, No. 5, 2009 CIESEK ET AL Fig. 4. The additional inhibitory effect of CsA depends on NS2/3 protease. (A) A set of constructs with an IRES at different positions of the genome was constructed to assess the role of NS2/NS3 cleavage dependent RNA replication on CsA susceptibility. (B) Huh-7.5 cells were transfected and treated with the given quantity of CsA. At 48 hours RNA replication (left), core release (middle), and release of infectivity (right) was assessed. (C) Huh- 7.5 cells were transfected and treated with different amounts of CsA; 48 hours later, HCV RNA replication was measured. cycle steps, possibly assembly and/or release. Furthermore, we determined that enhanced sensitivity is dependent on the presence of viral NS2 and cellular CypA possessing active isomerase activity. These findings have two important implications. First, the success of future therapeutic regimens will likely depend on the ability to combine multiple antiviral mechanisms. The current nonspecific standard substances, pegylated interferon and ribavirin, are expected to be complemented with specific antivirals under development, with inhibitors of NS3 and NS5B being the currently most advanced substances. NS2 has long been seen as an attractive target, but promising lead compounds have not been identified so far. In the light of the data shown here it is conceivable that CsAderivatives may close this gap. In fact, considering the much lower IC 50 of CsA against NS2-containing and full-length viral genomes, NS2 inhibition at least in the context of JFH1-based genomes may be the dominant antiviral effect of CsA-derivatives. In line with this interpretation, knockdown of endogenous CypA only markedly inhibited replication of JFH1 genomes that depend on proper NS2/NS3 cleavage for replication, whereas constructs that replicate independent of this cleavage were not impaired. These results likely reflect the different susceptibility of these constructs to CsA and suggest that CypA abundance in the knockdown cells was rate-limiting only for the NS2-dependent genomes; however, still sufficient for efficient replication of those genomes independent of processing at the NS2/NS3 site. Second, our findings have implications for our understanding of HCV biology: The NS2-dependent enhanced CsA sensitivity of full-length virus is independent of calcineurin, but mimicked by knockdown of CypA, the major cellular cyclophilin family member. Thus, CypA is a critical host factor that serves multiple functions for HCV. NS2 led to enhanced CsA
7 1644 CIESEK ET AL. HEPATOLOGY, November 2009 Fig. 5. The additional inhibitory effect of CsA on NS2 depends on cyclophilin A. (A) Inhibition of HCV RNA replication by tacrolimus. (B) Huh7-Lunet cells stably expressing shrna against CypA or CypB and control cells were transfected with given constructs. HCV RNA replication was measured 72 hours posttransfection. (C) CypA or CypB knockdown efficiency in Huh7-Lunet cells expressing shrna against CypA or CypB was confirmed by western blotting. Fig. 6. The isomerase activity of CypA is important for NS2 function. (A) CypA expression in Lunet CypA knockdown cells was restored using wildtype CypA or a mutant lacking isomerase activity (H126Q) and replication of given constructs was assessed upon transfection. (B) Restoration of CypA expression was confirmed by western blotting.
8 HEPATOLOGY, Vol. 50, No. 5, 2009 CIESEK ET AL sensitivity only if it was translated as part of the viral polyprotein, whereas NS2 translated from a separate cistron had no effect. Moreover, disruption of the RNA sequence of the NS2/NS3 junction alone was not sufficient to confer decreased CsA sensitivity. This is suggestive that the NS2 protease, which mediates a single cleavage event between NS2 and NS3 that is required for liberation of the NS3 N-terminus and replication, 19 is cyclophilin-dependent. However, in a recently reported highly sensitive NS2 protease assay 3 we did not detect any inhibition of proteolytic activity in the presence of CsA (data not shown). This could be due to a different, yet unknown function of uncleaved NS2- NS3 that is targeted by CsA or the NS2 protease activity is CsA-sensitive only in the context of a replicating virus, but not when assayed in the above-mentioned virus-free protease assay. In fact, a possible molecular mechanism of CsA action against NS2 is suggested by the NS2 crystal structure that revealed an unusual cisproline in position 164 of NS2 that is fully conserved among all HCV-isolates. 20 The peptidyl-prolyl cistrans isomerase activity of CyPs catalyzes the isomerization of peptide bonds from the trans form to the cis form. As Pro 164 lies in close proximity to the protease active site where His 143, Glu 163, and Cys 184 form the catalytic triad, CyP inhibition may preclude correct folding of the NS2 protein backbone and active site formation. In fact, when mutating prolin 164, which is conserved among all known HCV isolates to glycine or alanine, both mutations heavily impaired HCV RNA replication to background levels of the luciferase replication assay (Supporting Fig. 1). In summary, we highlight a new function of CypA as a host factor for HCV and an additional target of action for the CsA-derived antivirals that are currently in clinical trials. The anti-ns2 activity of CsA provides a rationale to test combinations of CsA-derivatives with established agents and novel antivirals targeting other components of the HCV replication machinery. Future clinical studies should address the in vivo benefits of such combination therapies and future laboratory work will be needed to determine which function of NS2 is inhibited by CsA. Acknowledgment: We thank Takaji Wakita and Jens Bukh for JFH1 and J6CF isolates, respectively, and Charles Rice for Huh-7.5 cells. We thank Novartis (Basel, Switzerland) and Debiopharm (Lausanne, Switzerland) for providing reagents. We also thank Jeremy Luban and Thomas Pertel for provision of the CypA and CypB knockdown cell lines. References 1. Simmonds P, Bukh J, Combet C, Deleage G, Enomoto N, Feinstone S, et al. Consensus proposals for a unified system of nomenclature of hepatitis C virus genotypes. HEPATOLOGY 2005;42: Lohmann V, Korner F, Koch J, Herian U, Theilmann L, Bartenschlager R. Replication of subgenomic hepatitis C virus RNAs in a hepatoma cell line. Science 1999;285: Schregel V, Jacobi S, Penin F, Tautz N. Hepatitis C virus NS2 is a protease stimulated by cofactor domains in NS3. Proc Natl Acad Sci USA2009; 106: Pietschmann T, Kaul A, Koutsoudakis G, Shavinskaya A, Kallis S, Steinmann E, et al. Construction and characterization of infectious intragenotypic and intergenotypic hepatitis C virus chimeras. Proc Natl Acad Sci U S A 2006;103: Bartenschlager R, Sparacio S. Hepatitis C virus molecular clones and their replication capacity in vivo and in cell culture. Virus Res 2007;127: Watashi K, Hijikata M, Hosaka M, Yamaji M, Shimotohno K. Cyclosporin A suppresses replication of hepatitis C virus genome in cultured hepatocytes. HEPATOLOGY 2003;38: Inoue K, Umehara T, Ruegg UT, Yasui F, Watanabe T, Yasuda H, et al. Evaluation of a cyclophilin inhibitor in hepatitis C virus-infected chimeric mice in vivo. HEPATOLOGY 2007;45: Ma S, Boerner JE, TiongYip C, Weidmann B, Ryder NS, Cooreman MP, et al. NIM811, a cyclophilin inhibitor, exhibits potent in vitro activity against hepatitis C virus alone or in combination with alpha interferon. Antimicrob Agents Chemother 2006;50: Flisiak R, Feinman SV, Jablkowski M, Horban A, Kryczka W, Pawlowska M, et al. The cyclophilin inhibitor Debio 025 combined with PEG IFNalpha2a significantly reduces viral load in treatment-naive hepatitis C patients. HEPATOLOGY 2009;49: Zhong J, Gastaminza P, Cheng G, Kapadia S, Kato T, Burton DR, et al. Robust hepatitis C virus infection in vitro. Proc Natl Acad Sci U S A 2005;102: Yang F, Robotham JM, Nelson HB, Irsigler A, Kenworthy R, Tang H. Cyclophilin A is an essential cofactor for hepatitis C virus infection and the principal mediator of cyclosporine resistance in vitro. J Virol 2008;82: Watashi K, Ishii N, Hijikata M, Inoue D, Murata T, Miyanari Y, et al. Cyclophilin B is a functional regulator of hepatitis C virus RNA polymerase. Mol Cell 2005;19: Robida JM, Nelson HB, Liu Z, Tang H. Characterization of hepatitis C virus subgenomic replicon resistance to cyclosporine in vitro. J Virol 2007; 81: Steinmann E, Penin F, Kallis S, Patel AH, Bartenschlager R, Pietschmann T. Hepatitis C virus p7 protein is crucial for assembly and release of infectious virions. PLoS Pathog 2007;3:e Ishii N, Watashi K, Hishiki T, Goto K, Inoue D, Hijikata M, et al. Diverse effects of cyclosporine on hepatitis C virus strain replication. J Virol 2006; 80: Liu J, Chen CM, Walsh CT. Human and Escherichia coli cyclophilins: sensitivity to inhibition by the immunosuppressant cyclosporin A correlates with a specific tryptophan residue. Biochemistry 1991;30: Paeshuyse J, Kaul A, De Clercq E, Rosenwirth B, Dumont JM, Scalfaro P, et al. The non-immunosuppressive cyclosporin DEBIO-025 is a potent inhibitor of hepatitis C virus replication in vitro. HEPATOLOGY 2006;43: Fernandes F, Poole DS, Hoover S, Middleton R, Andrei AC, Gerstner J, et al. Sensitivity of hepatitis C virus to cyclosporine A depends on nonstructural proteins NS5A and NS5B. HEPATOLOGY 2007;46: Welbourn S, Pause A. The hepatitis C virus NS2/3 protease. Curr Issues Mol Biol 2007;9: Lorenz IC, Marcotrigiano J, Dentzer TG, Rice CM. Structure of the catalytic domain of the hepatitis C virus NS2 3 protease. Nature 2006;442:
Cyclophilin A Interacts with Domain II of Hepatitis C Virus NS5A and Stimulates RNA Binding in an Isomerase-Dependent Manner
JOURNAL OF VIROLOGY, July 2011, p. 7460 7464 Vol. 85, No. 14 0022-538X/11/$12.00 doi:10.1128/jvi.00393-11 Copyright 2011, American Society for Microbiology. All Rights Reserved. Cyclophilin A Interacts
More informationEssential Role of Cyclophilin A for Hepatitis C Virus Replication and Virus Production and Possible Link to Polyprotein Cleavage Kinetics
Essential Role of Cyclophilin A for Hepatitis C Virus Replication and Virus Production and Possible Link to Polyprotein Cleavage Kinetics Artur Kaul 1, Sarah Stauffer 1., Carola Berger 1., Thomas Pertel
More informationNIM811, a Cyclophilin Inhibitor, Exhibits Potent In Vitro Activity against Hepatitis C Virus Alone or in Combination with Alpha Interferon
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, Sept. 2006, p. 2976 2982 Vol. 50, No. 9 0066-4804/06/$08.00 0 doi:10.1128/aac.00310-06 Copyright 2006, American Society for Microbiology. All Rights Reserved. NIM811,
More informationDomain III of NS5A contributes to both RNA replication and assembly of hepatitis C virus particles
Journal of General Virology (2009), 90, 1329 1334 DOI 10.1099/vir.0.009332-0 Short Communication Domain III of NS5A contributes to both RNA replication and assembly of hepatitis C virus particles Mair
More informationHepatitis C in Australia:
Hepatitis C in Australia: Epidemiology and Clinical Presentation (and a bit of virology ) A/Prof Mark Douglas Hepatitis C - Distribution Te and Jensen 2010 Clin Liver Dis Hepatitis C Epidemiology Estimated
More informationMechanism of Action of the Cyclophilin-inhibitor Class of Compounds. Katyna Borroto-Esoda
Mechanism of Action of the Cyclophilin-inhibitor Class of Compounds Katyna Borroto-Esoda Prototype of Cyclophilins (Cyps): Cyclophilin A (CypA) Originally discovered as a specific ligand for the immunosuppressive
More informationDevelopment of a Flow Cytometry Live Cell Assay for the Screening of Inhibitors of Hepatitis C Virus (HCV) Replication
Send Orders of Reprints at reprints@benthamscience.org The Open Virology Journal, 12, 6, 97-12 97 Open Access Development of a Flow Cytometry Live Cell Assay for the Screening of Inhibitors of Hepatitis
More informationHepatitis C Virus resistance screening and phenotypic NS3-PI-Resistance characterization. Arevir Meeting, 08./09.05.
Hepatitis C Virus resistance screening and phenotypic NS3-PI-Resistance characterization Arevir Meeting, 08./09.05.2014 Daniel Rupp HCV prevalence 130-170 million patients world wide Ca. 75% of infections
More informationEssential Role of Domain III of Nonstructural Protein 5A for Hepatitis C Virus Infectious Particle Assembly
Essential Role of Domain III of Nonstructural Protein 5A for Hepatitis C Virus Infectious Particle Assembly Nicole Appel. a, Margarita Zayas., Sven Miller b, Jacomine Krijnse-Locker a, Torsten Schaller
More informationGlobally, an estimated 160 million people are
Incorporation of Primary Patient-Derived Glycoproteins Into Authentic Infectious Hepatitis C Virus Particles Juliane Doerrbecker, 1 Martina Friesland, 1 Nina Riebesehl, 1 Corinne Ginkel, 1 Patrick Behrendt,
More informationRalf Bartenschlager, Charles Rice, and Michael Sofia are honored with the 2016 Lasker~DeBakey Clinical Medical Research Award
The Journal of Clinical Investigation NEWS Ralf Bartenschlager, Charles Rice, and Michael Sofia are honored with the 2016 Lasker~DeBakey Clinical Medical Research Award Hepatitis C virus (HCV) infects
More informationsirna a powerful tool to unravel hepatitis C virus-host interactions within the infectious life cycle
Author manuscript, published in "Journal of Hepatology 2008;48(3):523-5" DOI : 10.1016/j.jhep.2007.12.007 Journal of Hepatology: Journal Club sirna a powerful tool to unravel hepatitis C virus-host interactions
More informationHepG2 Cells Expressing MicroRNA mir-122 Support the Entire Hepatitis C Virus Life Cycle
JOURNAL OF VIROLOGY, Nov. 2011, p. 12087 12092 Vol. 85, No. 22 0022-538X/11/$12.00 doi:10.1128/jvi.05843-11 Copyright 2011, American Society for Microbiology. All Rights Reserved. HepG2 Cells Expressing
More informationviruses ISSN
Viruses 2012, 4, 2558-2577; doi:10.3390/v4112558 Review OPEN ACCESS viruses ISSN 1999-4915 www.mdpi.com/journal/viruses Cyclophilin Inhibitors: An Emerging Class of Therapeutics for the Treatment of Chronic
More informationTreatment Options in HCV Relapsers and Nonresponders. Raymond T. Chung, M.D.
Session IV Treatment Options in HCV Relapsers and Nonresponders Raymond T. Chung, M.D. Director of Hepatology, Massachusetts General Hospital, Associate Professor of Medicine, Harvard Medical School, Boston,
More informationHepatitis C Virus and Antiviral Drug Resistance
Gut and Liver, Vol. 10, No. 6, November 2016, pp. 890-895 Review Hepatitis C Virus and Antiviral Drug Resistance Seungtaek Kim, Kwang-Hyub Han, and Sang Hoon Ahn Institute of Gastroenterology, Department
More informationNew targets for antiviral therapy of chronic hepatitis C
Liver International ISSN 1478-3223 REVIEW ARTICLE New targets for antiviral therapy of chronic hepatitis C Sandra Bühler and Ralf Bartenschlager Department of Infectious Diseases, Molecular Virology, Heidelberg
More informationProduction of Infectious Hepatitis C Virus of Various Genotypes in Cell Cultures
JOURNAL OF VIROLOGY, May 2007, p. 4405 4411 Vol. 81, No. 9 0022-538X/07/$08.00 0 doi:10.1128/jvi.02334-06 Copyright 2007, American Society for Microbiology. All Rights Reserved. Production of Infectious
More informationSignificance of Hepatitis C. The Evolving Burden of Hepatitis C. The Bad News... The Good News... Chronic Hepatitis C Can be Cured
Journée scientifique de l'arl Yverdon, 24 mars 2011 Darius Moradpour Service de Gastroentérologie et d'hépatologie Centre Hospitalier Universitaire Vaudois Université de Lausanne Significance of Hepatitis
More informationEnvelope e_ :------, Envelope glycoproteins e_ ~ Single-stranded RNA ----, Nucleocapsid
Virus Antib(tdies Your Expertise, Our Antibodies, Accelerated Discovery. Envelope e_---------:------, Envelope glycoproteins e_-------1~ Single-stranded RNA ----, Nucleocapsid First identified in 1989,
More informationImmunogenic and Functional Organization of Hepatitis C Virus (HCV) Glycoprotein E2 on Infectious HCV Virions
JOURNAL OF VIROLOGY, Jan. 2007, p. 1043 1047 Vol. 81, No. 2 0022-538X/07/$08.00 0 doi:10.1128/jvi.01710-06 Copyright 2007, American Society for Microbiology. All Rights Reserved. Immunogenic and Functional
More informationDeterminants for Membrane Association of the Hepatitis C Virus NS2 Protease Domain
JVI Accepts, published online ahead of print on 19 March 2014 J. Virol. doi:10.1128/jvi.00224-14 Copyright 2014, American Society for Microbiology. All Rights Reserved. 1 2 3 Revised JVI00224-14 Short-Form
More informationIntroduction to the Impact of Resistance in Hepatitis C
Introduction to the Impact of Resistance in Hepatitis C Sponsored by AbbVie 2/1/2017 Presented by Sammy Saab, MD, MPH, FACG, AGAF, FAASLD February 1 st, 2017 1 AbbVie disclosures This is an Abbvie sponsored
More informationMore than 130 million people are chronically infected
GASTROENTEROLOGY 2010;138:1875 1884 BASIC LIVER, BILIARY TRACT Glucocorticosteroids Increase Cell Entry by Hepatitis C Virus SANDRA CIESEK,*, EIKE STEINMANN, MARKUS IKEN,*, MICHAEL OTT,*, FABIAN A. HELFRITZ,
More informationAdvances in Hepatitis C Virus Therapeutics HBV HIV HCV. Advances in HCV Therapeutics. Greg Dore. Viral Hepatitis Clinical Research Program
Advances in Hepatitis C Virus Therapeutics Greg Dore Viral Hepatitis Clinical Research Program National Centre in HIV Epidemiology and Clinical Research Hepatitis C notifications: 199-23 Estimates of BBV
More informationAntiviral agents in HCV
Antiviral agents in HCV : Upcoming Therapeutic Options Su Jong Yu, M.D., Ph.D. Department of Internal Medicine, Liver Research Institute, Seoul National University College of Medicine Estimated 170 Million
More informationThis is a pre- or post-print of an article published in Steinmann, E., Pietschmann, T. Cell culture systems for hepatitis C virus (2013) Current
This is a pre- or post-print of an article published in Steinmann, E., Pietschmann, T. Cell culture systems for hepatitis C virus (2013) Current Topics in Microbiology and Immunology, 369, pp. 17-48. Chapter
More informationThe Changing World of Hepatitis C
The Changing World of Hepatitis C Alnoor Ramji Gastroenterology & Hepatology Clinical Associate Professor Division of Gastroenterology University Of British Columbia St. Paul s Hospital Site Disclosures
More informationThe Hepatitis C Virus Nonstructural Protein 2 (NS2): An Up-and-Coming Antiviral Drug Target
Viruses 2010, 2, 1635-1646; doi:10.3390/v2081635 OPEN ACCESS viruses ISSN 1999-4915 www.mdpi.com/journal/viruses Review The Hepatitis C Virus Nonstructural Protein 2 (NS2): An Up-and-Coming Antiviral Drug
More informationThe HCV pipeline: Will IFN-free treatment be possible? Heiner Wedemeyer. Hannover Medical School Germany
: Will IFN-free treatment be possible? Heiner Wedemeyer Hannover Medical School Germany Interferon-free regimens to treat hepatitis C What should be the goal of interferon-free treatment regimens: Sustained
More informationNOTES. Nonhepatic Cell Lines HeLa and 293 Support Efficient Replication of the Hepatitis C Virus Genotype 2a Subgenomic Replicon
JOURNAL OF VIROLOGY, Jan. 2005, p. 592 596 Vol. 79, No. 1 0022-538X/05/$08.00 0 doi:10.1128/jvi.79.1.592 596.2005 Copyright 2005, American Society for Microbiology. All Rights Reserved. NOTES Nonhepatic
More informationProduction of infectious genotype 1a hepatitis C virus (Hutchinson strain) in cultured human hepatoma cells
Production of infectious genotype 1a hepatitis C virus (Hutchinson strain) in cultured human hepatoma cells MinKyung Yi*, Rodrigo A. Villanueva*, David L. Thomas, Takaji Wakita, and Stanley M. Lemon* *Center
More informationIdentification of IFN-alpha Induced Envelope Mutations of Hepatitis C Virus In Vitro Associated
JVI Accepts, published online ahead of print on 18 September 2013 J. Virol. doi:10.1128/jvi.00901-13 Copyright 2013, American Society for Microbiology. All Rights Reserved. 1 2 Serre et al., September
More informationAnimal Models for the Study of Hepatitis C Virus Infection and Related Liver Disease
GASTROENTEROLOGY 2012;142:1279 1287 Animal Models for the Study of Hepatitis C Virus Infection and Related Liver Disease Jens Bukh Copenhagen Hepatitis C Program (CO-HEP), Department of Infectious Diseases
More informationReceived 5 November 2010/Accepted 6 December 2010
JOURNAL OF VIROLOGY, Mar. 2011, p. 2138 2147 Vol. 85, No. 5 0022-538X/11/$12.00 doi:10.1128/jvi.02313-10 Copyright 2011, American Society for Microbiology. All Rights Reserved. Production of Hepatitis
More informationDirect acting anti-virals: the near future
Direct acting anti-virals: the near future Heiner Wedemeyer Hannover Medical School Germany Will IFN-free treatment be possible in the near future? Interferon-free regimens to treat hepatitis C What should
More informationHepatitis C Resistance Associated Variants (RAVs)
Hepatitis C Resistance Associated Variants (RAVs) Atif Zaman, MD MPH Oregon Health & Science University Professor of Medicine Division of Gastroenterology and Hepatology Nothing to disclose Disclosure
More informationSupplementary Figure 1. SC35M polymerase activity in the presence of Bat or SC35M NP encoded from the phw2000 rescue plasmid.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Supplementary Figure 1. SC35M polymerase activity in the presence of Bat or SC35M NP encoded from the phw2000 rescue plasmid. HEK293T
More informationAntivirals for the treatment of chronic HCV infection: Bench to Bedside and beyond
Antivirals for the treatment of chronic HCV infection: Bench to Bedside and beyond Mark Sulkowski, MD Professor of Medicine Johns Hopkins University School of Medicine Baltimore, Maryland Disclosures for
More informationHCV MEDICATIONS & Kenneth E. Sherman, MD, PhD Gould Professor of Medicine Director, Division of Digestive Diseases University of Cincinnati
HCV MEDICATIONS & THERAPEUTIC TRIALS Kenneth E. Sherman, MD, PhD Gould Professor of Medicine Director, Division of Digestive Diseases University of Cincinnati DISCLOSURES Active or Within 12 Months Research
More informationHepatitis B Virus infection: virology
Hepatitis B Virus infection: virology 167 Falk Symposium: Liver under constant attack from fat to viruses III Falk Gastro-Konferenz 17.-21. September 2008 Congress Centrum Mainz Maura Dandri Department
More informationHepatitis C virus (HCV) is a highly variable, Isolate-Dependent Use of Claudins for Cell Entry by Hepatitis C Virus VIRAL HEPATITIS
VIRAL HEPATITIS Isolate-Dependent Use of Claudins for Cell Entry by Hepatitis C Virus Sibylle Haid, 1 Christina Grethe, 1 Michael T. Dill, 2 Markus Heim, 2 Lars Kaderali, 3 and Thomas Pietschmann 1 Hepatitis
More informationHCV Resistance Associated variants: impact on chronic hepatitis C treatment
HCV Resistance Associated variants: impact on chronic hepatitis C treatment Dr. Stéphane Chevaliez Associate Professor of Medicine at the University of Paris-Est. History of Resistance in HCV Concern Only
More informationHepatitis C virus (HCV) infection is a major public health burden
Identification of Alpha Interferon-Induced Envelope Mutations of Hepatitis C Virus In Vitro Associated with Increased Viral Fitness and Interferon Resistance Stéphanie B. N. Serre, a Henrik B. Krarup,
More informationRegulation of Infectious Genotype 1a Hepatitis C Virus Production. by Domain III of NS5A
JVI Accepts, published online ahead of print on April 0 J. Virol. doi:0./jvi.0-0 Copyright 0, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved. JVI0-0 Version
More informationMultiple Mutations in HCV NS5A Domain II Are Required to Confer Significant. Level of Resistance to Alisporivir
AAC Accepts, published online ahead of print on 16 July 2012 Antimicrob. Agents Chemother. doi:10.1128/aac.00919-12 Copyright 2012, American Society for Microbiology. All Rights Reserved. 1 2 3 4 5 6 7
More informationCopyright 2007 The Authors. Deposited on:17 January 2013
Steinmann, E., Penin, F., Kallis, S., Patel, A.H,, Bartenschlager, R., and Pietschmann, T. (2007) Hepatitis C Virus p7 Protein Is Crucial for Assembly and Release of Infectious Virions. PLoS Pathogens,
More informationBile Acids Specifically Increase Hepatitis C Virus RNA- Replication
Bile Acids Specifically Increase Hepatitis C Virus RNA- Replication Patrick Chhatwal 1, Dorothea Bankwitz 1, Juliane Gentzsch 1, Anne Frentzen 1, Philipp Schult 2, Volker Lohmann 2, Thomas Pietschmann
More informationThe role of Hepatitis C Virus in hepatocarcinogenesis
The role of Hepatitis C Virus in hepatocarcinogenesis Laura Beretta Fred Hutchinson Cancer Research Center l8 Incidence and mortality of the five most common cancers worldwide, 2000 Incidence Lung Breast
More informationCurrent Standard of Care for Naïve HCV Patients (SVR)
Hepatitis C: Non-responders Nikunj Shah, MD Associate Professor of medicine University of Illinois Medical center 1 Current Standard of Care for Naïve HCV Patients (SVR) 1 8 8 6 53 45 4 6 52 46 4 2 2 Peg
More informationHepatitis C virus (HCV) is a global health burden
c-src Is Required for Complex Formation Between the Hepatitis C Virus Encoded Proteins NS5A and NS5B: A Prerequisite for Replication Andreas Pfannkuche, 1 * Katrin Büther, 1 * Juliane Karthe, 1 Marion
More informationThe role of triple therapy with protease inhibitors in hepatitis C virus genotype 1na «ve patients
The role of triple therapy with protease inhibitors in hepatitis C virus genotype 1na «ve patients David R. Nelson Clinical and Translational Science Institute, University of Florida, FL, USA Liver International
More informationHCV eradication with direct acting antivirals (DAAs)?
HCV eradication with direct acting antivirals (DAAs)? Emilie Estrabaud Service d Hépatologie et INSERM UMR1149, AP-HP Hôpital Beaujon, Paris, France. emilie.estrabaud@inserm.fr HCV eradication with direct
More informationTechnical Bulletin No. 162
CPAL Central Pennsylvania Alliance Laboratory Technical Bulletin No. 162 cobas 6800 HCV Viral Load Assay - New Platform - June 1, 2017 Contact: Heather Habig, MLS (ASCP) CM, MB CM, 717-851-1422 Operations
More informationHEPATOLOGY ELSEWHERE. Unexpected Host Range of Hepatitis C Virus Replicons. Abstract. Comments
HEPATOLOGY ELSEWHERE EDITORS Hartmut Jaeschke, Tucson, AZ Kevin Mullen, Cleveland, OH Darius Moradpour, Freiburg, Germany Unexpected Host Range of Hepatitis C Virus Replicons Zhu Q, Guo J-T, Seeger C.
More informationAbout 170 million people worldwide are infected
Development of Hepatitis C Virus Genotype 3a Cell Culture System Sulyi Kim, 1 Tomoko Date, 1 Hiroshi Yokokawa, 1,2 Tamaki Kono, 1 Hideki Aizaki, 1 Patrick Maurel, 3 Claire Gondeau, 3,4 and Takaji Wakita
More informationInhibitors of Endoplasmic Reticulum -Glucosidases Potently Suppress Hepatitis C Virus Virion Assembly and Release
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, Mar. 2011, p. 1036 1044 Vol. 55, No. 3 0066-4804/11/$12.00 doi:10.1128/aac.01319-10 Copyright 2011, American Society for Microbiology. All Rights Reserved. Inhibitors
More informationZepatier. (elbasvir, grazoprevir) New Product Slideshow
Zepatier (elbasvir, grazoprevir) New Product Slideshow Introduction Brand name: Zepatier Generic name: Elbasvir, grazoprevir Pharmacological class: HCV NS5A inhibitor + HCV NS3/4A protease inhibitor Strength
More informationFine Mapping of a cis-acting Sequence Element in Yellow Fever Virus RNA That Is Required for RNA Replication and Cyclization
JOURNAL OF VIROLOGY, Feb. 2003, p. 2265 2270 Vol. 77, No. 3 0022-538X/03/$08.00 0 DOI: 10.1128/JVI.77.3.2265 2270.2003 Copyright 2003, American Society for Microbiology. All Rights Reserved. Fine Mapping
More informationHepatitis C virus (HCV) is a global public health problem,
Molecular Clones of Hepatitis C Virus: Applications to Animal Models Michael Gale, Jr., and Michael R. Beard Abstract Hepatitis C virus (HCV) is a global public health problem, with approximately 3% of
More informationNew York State HCV Provider Webinar Series. Side Effects of Therapy
New York State HCV Provider Webinar Series Side Effects of Therapy Objectives Understand the basics of HCV therapy Review the currently available regimens for treatment of HCV Appreciate side effects related
More informationSupplementary information. MARCH8 inhibits HIV-1 infection by reducing virion incorporation of envelope glycoproteins
Supplementary information inhibits HIV-1 infection by reducing virion incorporation of envelope glycoproteins Takuya Tada, Yanzhao Zhang, Takayoshi Koyama, Minoru Tobiume, Yasuko Tsunetsugu-Yokota, Shoji
More informationEfficient production of infectious hepatitis C virus with adaptive mutations in cultured hepatoma cells
Journal of General Virology (2009), 90, 1681 1691 DOI 10.1099/vir.0.010983-0 Efficient production of infectious hepatitis C virus with adaptive mutations in cultured hepatoma cells Yasuaki Bungyoku, Ikuo
More informationClinical Pharmacology of DAA s for HCV: What s New and What s in the Pipeline
Clinical Pharmacology of DAA s for HCV: What s New and What s in the Pipeline Anita Mathias, PhD Clinical Pharmacology, Gilead Sciences 14 th Int. Workshop on Clinical Pharmacology of HIV Therapy April
More informationSECTION 1: OLYSIO with (PEGASYS) AND RIBAVIRIN SECTION 2: OLYSIO with (PEGINTRON) AND RIBAVIRIN RATIONALE FOR INCLUSION IN PA PROGRAM
SECTION 1: OLYSIO with (PEGASYS) AND RIBAVIRIN SECTION 2: OLYSIO with (PEGINTRON) AND RIBAVIRIN RATIONALE FOR INCLUSION IN PA PROGRAM SECTION 1: OLYSIO with (PEGASYS) AND RIBAVIRIN Background Hepatitis
More informationTranslation. Host Cell Shutoff 1) Initiation of eukaryotic translation involves many initiation factors
Translation Questions? 1) How does poliovirus shutoff eukaryotic translation? 2) If eukaryotic messages are not translated how can poliovirus get its message translated? Host Cell Shutoff 1) Initiation
More informationHow Stable Is the Hepatitis C Virus (HCV)? Environmental Stability of HCV and Its Susceptibility to Chemical Biocides
MAJOR ARTICLE How Stable Is the Hepatitis C Virus (HCV)? Environmental Stability of HCV and Its Susceptibility to Chemical Biocides Sandra Ciesek, 1,2 Martina Friesland, 1 Jörg Steinmann, 3 Britta Becker,
More informationPhase 3. Treatment Experienced. Ledipasvir-Sofosbuvir +/- Ribavirin in HCV Genotype 1 ION-2. Afdhal N, et al. N Engl J Med. 2014;370:
Phase 3 Treatment Experienced Ledipasvir-Sofosbuvir +/- Ribavirin in HCV Genotype 1 ION-2 Afdhal N, et al. N Engl J Med. 2014;370:1483-93. Ledipasvir-Sofosbuvir +/- Ribavirin in Treatment-Experienced HCV
More informationHarvoni: solution to HCV
Harvoni: solution to HCV PRESENTATION BY: PATRICK HO, USC PHARM D. CANDIDATE OF 2017 MENTOR: DR. CRAIG STERN, PHARMD, MBA, RPH, FASCP, FASHP, FICA, FLMI, FAMCP Hepatitis C (HCV) Inflammation of the liver,
More informationJournal of Microbes and Infection,June 2007,Vol 2,No. 2. (HBsAg)2 , (PCR) 1762/ 1764
68 2007 6 2 2 Journal of Microbes and Infection,June 2007,Vol 2,No. 2 2 S 1 1 1 2 2 3 1 (HBsAg)2 ( YIC) S 5 30g 60g YIC ( HBV) DNA > 2 log10 e (HBeAg), 6 DNA, 1 YIC 1, (PCR) (0 ) (44 ) HBV DNA S 2, S a
More informationInactivation and Survival of Hepatitis C Virus on Inanimate Surfaces
Journal of Infectious Diseases Advance Access published October 19, 2011 MAJOR ARTICLE Inactivation and Survival of Hepatitis C Virus on Inanimate Surfaces Juliane Doerrbecker, 1 Martina Friesland, 1 Sandra
More informationOnset of the AIDS pandemic in the early
REVIEWS Treatment Failure and Resistance with Direct-Acting Antiviral Drugs Against Hepatitis C Virus Jean-Michel Pawlotsky 1,2 Current treatment of chronic hepatitis C virus (HCV) infection is based on
More informationDaklinza Sovaldi. Daklinza (daclatasvir) and Sovaldi (sofosbuvir) Description
Federal Employee Program 1310 G Street, N.W. Washington, D.C. 20005 202.942.1000 Fax 202.942.1125 Subject: Daklinza Sovaldi Page: 1 of 7 Last Review Date: June 24, 2016 Daklinza Sovaldi Description Daklinza
More informationHepatitis C Management and Treatment
Hepatitis C Management and Treatment Kaya Süer Near East University Faculty of Medicine Infectious Diseases and Clinical Microbiology 1 Discovery of Hepatitis C Key facts Hepatitis C: the virus can cause
More informationHepatitis C Virus SARS-Co Virus. Neerja Kaushik-Basu Biochemistry and Molecular Biology Oct
Hepatitis C Virus SARS-Co Virus Neerja Kaushik-Basu Biochemistry and Molecular Biology kaushik@umdnj.edu d Oct 30 2008 Viral Hepatitis - Historical Perspective Infectious A E Enterically transmitted Viral
More informationClinical utility of NGS for the detection of HIV and HCV resistance
18 th Annual Resistance and Antiviral Therapy Meeting v Professor Janke Schinkel Academic Medical Centre, Amsterdam, The Netherlands Thursday 18 September 2014, Royal College of Physicians, London Clinical
More informationCHARACTERIZATION OF V36C, A NOVEL AMINO ACID SUBSTITUTION CONFERRING HEPATITIS C VIRUS (HCV) RESISTANCE TO TELAPREVIR, A
AAC Accepts, published online ahead of print on 5 April 2010 Antimicrob. Agents Chemother. doi:10.1128/aac.01796-09 Copyright 2010, American Society for Microbiology and/or the Listed Authors/Institutions.
More information2017 UnitedHealthcare Services, Inc.
UnitedHealthcare Pharmacy Clinical Pharmacy Programs Program Number 2017 P 1146-7 Program Prior Authorization/Notification Medication Harvoni (ledipasvir/sofosbuvir) P&T Approval Date 10/2014, 2/2015,
More informationviruses ISSN
Viruses 2010, 2, 1782-1803; doi:10.3390/v2081782 OPEN ACCESS viruses ISSN 1999-4915 www.mdpi.com/journal/viruses Review Last Stop Before Exit Hepatitis C Assembly and Release as Antiviral Drug Targets
More informationHepatitis B. HBV Cure: Insights for the Biotechnology and the Research Analyst Community November 11, Lalo Flores, PhD Global Head HBV R&D
Hepatitis B HBV Cure: Insights for the Biotechnology and the Research Analyst Community November 11, 2016 Lalo Flores, PhD Global Head HBV R&D Infectious Diseases Diseases Infectious 11 Janssen s Vision
More informationDaklinza Sovaldi. Daklinza (daclatasvir) and Sovaldi (sofosbuvir) Description
Federal Employee Program 1310 G Street, N.W. Washington, D.C. 20005 202.942.1000 Fax 202.942.1125 5.01.36 Subject: Daklinza Page: 1 of 8 Last Review Date: March 18, 2016 Daklinza Description Daklinza (daclatasvir)
More informationMutants and HBV vaccination. Dr. Ulus Salih Akarca Ege University, Izmir, Turkey
Mutants and HBV vaccination Dr. Ulus Salih Akarca Ege University, Izmir, Turkey Geographic Distribution of Chronic HBV Infection 400 million people are carrier of HBV Leading cause of cirrhosis and HCC
More informationHepatitis C Virus and Cytokine Responses
Hepatitis C Virus and Cytokine Responses Eui-Cheol Shin, M.D., Ph.D. Laboratory of Immunology & Infectious Diseases (LIID), Graduate School of Medical Science & Engineering (GSMSE), KAIST Daejeon, Korea
More informationVirus-host interactions
Virus-host interactions - Strategies viruses use to replicate their genomes in susceptible host cells replication - Strategies viruses use to move their genomes throughout susceptible host plants cell-to-cell
More information7.012 Quiz 3 Answers
MIT Biology Department 7.012: Introductory Biology - Fall 2004 Instructors: Professor Eric Lander, Professor Robert A. Weinberg, Dr. Claudette Gardel Friday 11/12/04 7.012 Quiz 3 Answers A > 85 B 72-84
More informationCRISPR/Cas9 cleavage of viral DNA efficiently suppresses hepatitis B virus
0 0 CRISPR/Cas cleavage of viral DNA efficiently suppresses hepatitis B virus Authors: Vyas Ramanan,, Amir Shlomai,, David B.T. Cox,,,, Robert E. Schwartz,,, Eleftherios Michailidis, Ankit Bhatta, David
More informationVirion Genome Genes and proteins Viruses and hosts Diseases Distinctive characteristics
Hepadnaviruses Virion Genome Genes and proteins Viruses and hosts Diseases Distinctive characteristics Hepatitis viruses A group of unrelated pathogens termed hepatitis viruses cause the vast majority
More informationAlthough it has been recognized as a leading cause of
GASTROENTEROLOGY 2008;135:1710 1718 Antiviral Suppression vs Restoration of RIG-I Signaling by Hepatitis C Protease and Polymerase Inhibitors YUQIONG LIANG,*, HISASHI ISHIDA,*, OLIVER LENZ, TSE I LIN,
More informationReview Article Advancement in the Development of Models for Hepatitis C Research
Hindawi Publishing Corporation Journal of Biomedicine and Biotechnology Volume 2012, Article ID 346761, 7 pages doi:10.1155/2012/346761 Review Article Advancement in the Development of Models for Hepatitis
More informationHepatitis C virus (HCV) is an enveloped singlestranded
The Non-Immunosuppressive Cyclosporin DEBIO-025 Is a Potent Inhibitor of Hepatitis C Virus Replication In Vitro Jan Paeshuyse, 1 Artur Kaul, 2 Erik De Clercq, 1 Brigitte Rosenwirth, 4 Jean-Maurice Dumont,
More informationCharacterization of hepatitis C virus intra- and inter-genotypic chimeras reveals a role of. the glycoproteins in virus envelopment.
JVI Accepts, published online ahead of print on 2 October 2013 J. Virol. doi:10.1128/jvi.01708-13 Copyright 2013, American Society for Microbiology. All Rights Reserved. 1 2 Characterization of hepatitis
More informationClinical Applications of Resistance Stuart C. Ray, MD
Clinical Applications of Resistance Stuart C. Ray, MD Professor of Medicine and Oncology Director, Infectious Diseases Fellowship Training Program Johns Hopkins University School of Medicine Disclosures
More informationInfluenza viruses. Virion. Genome. Genes and proteins. Viruses and hosts. Diseases. Distinctive characteristics
Influenza viruses Virion Genome Genes and proteins Viruses and hosts Diseases Distinctive characteristics Virion Enveloped particles, quasi-spherical or filamentous Diameter 80-120 nm Envelope is derived
More informationJVI Accepts, published online ahead of print on 23 March 2011 J. Virol. doi: /jvi
JVI Accepts, published online ahead of print on 23 March 2011 J. Virol. doi:10.1128/jvi.02116-10 Copyright 2011, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.
More informationHepatitis C. Core slides
Hepatitis C Core slides This material was prepared by the Viral Hepatitis Prevention Board The slides (or subsets) can be reproduced for educational use only, with reference to the original source and
More informationACCEPTED. Characterization of Hepatitis C Virus Subgenomic Replicon. Resistance to Cyclosporine A In Vitro
JVI Accepts, published online ahead of print on 21 March 07 J. Virol. doi:.1128/jvi.02524-06 Copyright 07, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.
More informationDaklinza Sovaldi. Daklinza (daclatasvir) and Sovaldi (sofosbuvir) Description
Federal Employee Program 1310 G Street, N.W. Washington, D.C. 20005 202.942.1000 Fax 202.942.1125 Subject: Daklinza Sovaldi Page: 1 of 4 Last Review Date: September 18, 2015 Daklinza Sovaldi Description
More informationTherapeutic short hairpin RNA expression in the liver: viral targets and vectors
(2006) 13, 563 575 & 2006 Nature Publishing Group All rights reserved 0969-7128/06 $30.00 www.nature.com/gt : viral targets and vectors Departments of Pediatrics and Genetics, School of Medicine, Stanford
More informationExpression of NS4 HCV in liver cells of HIV/HCV co-infected patients
Expression of NS4 HCV in liver cells of HIV/HCV co-infected patients Associated prof. N.V. Matsiyeuskaya, D.Sci (Med), associated prof. M.G. Zubritskiy, MD.PHD Grodno state medical university, Belarus
More informationVirus Genetic Diversity
Virus Genetic Diversity Jin-Ching Lee, Ph.D. 李 jclee@kmu.edu.tw http://jclee.dlearn.kmu.edu.t jclee.dlearn.kmu.edu.tw TEL: 2369 Office: N1024 Faculty of Biotechnology Kaohsiung Medical University Outline
More information