Birke Bartosch

Rapid induction of virus-neutralizing antibodies and viral clearance in a single-source outbreak of hepatitis C. (2007)

Pestka, Jan, Zeisel, Mirjam, Bläser, Edith, Schürmann, Peter, Bartosch, Birke, Cosset, François-Loïc, ...

In contrast to a detailed understanding of antiviral cellular immune responses, the impact of neutralizing antibodies for the resolution of acute hepatitis C is poorly defined. The analysis of...

Rapid induction of virus-neutralizing antibodies and viral clearance in a single-source outbreak of hepatitis C. (2007)

Pestka, Jan, Zeisel, Mirjam, Bläser, Edith, Schürmann, Peter, Bartosch, Birke, Cosset, François-Loïc, ...

In contrast to a detailed understanding of antiviral cellular immune responses, the impact of neutralizing antibodies for the resolution of acute hepatitis C is poorly defined. The analysis of...

Rapid induction of virus-neutralizing antibodies and viral clearance in a single-source outbreak of hepatitis C. (2007)

Pestka, Jan, Zeisel, Mirjam, Bläser, Edith, Schürmann, Peter, Bartosch, Birke, Cosset, François-Loïc, ...

In contrast to a detailed understanding of antiviral cellular immune responses, the impact of neutralizing antibodies for the resolution of acute hepatitis C is poorly defined. The analysis of...

Infectious hepatitis C virus pseudo-particles containing functional E1-E2 envelope protein complexes. (2003)

Bartosch, Birke, Dubuisson, Jean, Cosset, François-Loïc

The study of hepatitis C virus (HCV), a major cause of chronic liver disease, has been hampered by the lack of a cell culture system supporting its replication. Here, we have successfully generated...

Infectious hepatitis C virus pseudo-particles containing functional E1-E2 envelope protein complexes. (2003)

Bartosch, Birke, Dubuisson, Jean, Cosset, François-Loïc

The study of hepatitis C virus (HCV), a major cause of chronic liver disease, has been hampered by the lack of a cell culture system supporting its replication. Here, we have successfully generated...

Infectious hepatitis C virus pseudo-particles containing functional E1-E2 envelope protein complexes. (2003)

Bartosch, Birke, Dubuisson, Jean, Cosset, François-Loïc

The study of hepatitis C virus (HCV), a major cause of chronic liver disease, has been hampered by the lack of a cell culture system supporting its replication. Here, we have successfully generated...

In vitro assay for neutralizing antibody to hepatitis C virus: Evidence for broadly conserved neutralization epitopes

Bartosch, Birke, Bukh, Jens, Meunier, Jean-Christophe, Granier, Christelle, Engle, Ronald E., Blackwelder, William C., ...

Our understanding of the humoral immune response to hepatitis C virus (HCV) is limited because the virus can be studied only in humans and chimpanzees and because previously described neutralization...

Characterization of Functional Hepatitis C Virus Envelope Glycoproteins

Op De Beeck, Anne, Voisset, Cécile, Bartosch, Birke, Ciczora, Yann, Cocquerel, Laurence, Keck, Zhenyong, ...

Hepatitis C virus (HCV) encodes two envelope glycoproteins, E1 and E2, that assemble as a noncovalent heterodimer which is mainly retained in the endoplasmic reticulum. Because assembly into...

Neutralizing antibodies to hepatitis C virus (HCV) in immune globulins derived from anti-HCV-positive plasma

Yu, Mei-ying W., Bartosch, Birke, Zhang, Pei, Guo, Zheng-ping, Renzi, Paula M., Shen, Li-ming, ...

The role of humoral immunity in hepatitis C virus (HCV) infections is uncertain. Nevertheless, there is increasing evidence for neutralizing antibodies to HCV in the serum or plasma of chronically...

Evidence and Consequence of Porcine Endogenous Retrovirus Recombination

Bartosch, Birke, Stefanidis, Dimitrios, Myers, Richard, Weiss, Robin, Patience, Clive, Takeuchi, Yasuhiro

The genetic nature and biological effects of recombination between porcine endogenous retroviruses (PERV) were studied. An infectious molecular clone was generated from a high-titer, human-tropic...

Determinants of High Titer in Recombinant Porcine Endogenous Retroviruses

Harrison, Ian, Takeuchi, Yasuhiro, Bartosch, Birke, Stoye, Jonathan P.

Porcine endogenous retroviruses (PERVs) pose a potential stumbling block for therapeutic xenotransplantation, with the greatest threat coming from viruses generated by recombination between members...

Evidence for cross-genotype neutralization of hepatitis C virus pseudo-particles and enhancement of infectivity by apolipoprotein C1

Meunier, Jean-Christophe, Engle, Ronald E., Faulk, Kristina, Zhao, Ming, Bartosch, Birke, Alter, Harvey, ...

The lack of a cell culture system to support hepatitis C virus (HCV) replication has hampered studies of this frequent cause of chronic liver disease. However, pseudotyped retroviral particles (pp)...

Human Serum Facilitates Hepatitis C Virus Infection, and Neutralizing Responses Inversely Correlate with Viral Replication Kinetics at the Acute Phase of Hepatitis C Virus Infection

Lavillette, Dimitri, Morice, Yoann, Germanidis, Georgios, Donot, Peggy, Soulier, Alexandre, Pagkalos, Emanuil, ...

The factors leading to spontaneous clearance of hepatitis C virus (HCV) or to viral persistence are elusive. Understanding virus-host interactions that enable acute HCV clearance is key to the...

An Interplay between Hypervariable Region 1 of the Hepatitis C Virus E2 Glycoprotein, the Scavenger Receptor BI, and High-Density Lipoprotein Promotes both Enhancement of Infection and Protection against Neutralizing Antibodies

Bartosch, Birke, Verney, Géraldine, Dreux, Marlène, Donot, Peggy, Morice, Yoann, Penin, François, ...

Hepatitis C virus (HCV) circulates in the bloodstream in different forms, including complexes with immunoglobulins and/or lipoproteins. To address the significance of such associations, we produced...

Role of N-Linked Glycans in the Functions of Hepatitis C Virus Envelope Glycoproteins

Goffard, Anne, Callens, Nathalie, Bartosch, Birke, Wychowski, Czeslaw, Cosset, François-Loïc, Montpellier, Claire, ...

Hepatitis C virus (HCV) encodes two viral envelope glycoproteins. E1 contains 4 or 5 N-linked glycosylation sites and E2 contains up to 11, with most of the sites being well conserved, suggesting...

Monoclonal Antibody AP33 Defines a Broadly Neutralizing Epitope on the Hepatitis C Virus E2 Envelope Glycoprotein

Owsianka, Ania, Tarr, Alexander W., Juttla, Vicky S., Lavillette, Dimitri, Bartosch, Birke, Cosset, François-Loïc, ...

Hepatitis C virus (HCV) remains a significant threat to the general health of the world's population, and there is a pressing need for the development of new treatments and preventative vaccines....

Analysis of a Highly Flexible Conformational Immunogenic Domain A in Hepatitis C Virus E2

Keck, Zhen-Yong, Li, Ta-Kai, Xia, Jinming, Bartosch, Birke, Cosset, François-Loïc, Dubuisson, Jean, ...

Hepatitis C (HCV) E2 glycoprotein is involved in virus attachment and entry, and its structural organization is largely unknown. Characterization of a panel of human monoclonal antibodies (HMAbs) to...

Basic Residues in Hypervariable Region 1 of Hepatitis C Virus Envelope Glycoprotein E2 Contribute to Virus Entry

Callens, Nathalie, Ciczora, Yann, Bartosch, Birke, Vu-Dac, Ngoc, Cosset, François-Loïc, Pawlotsky, Jean-Michel, ...

The N terminus of hepatitis C virus (HCV) envelope glycoprotein E2 contains a hypervariable region (HVR1) which has been proposed to play a role in viral entry. Despite strong amino acid variability,...

In vitro assay for neutralizing antibody to hepatitis C virus: Evidence for broadly conserved neutralization epitopes

Bartosch, Birke, Bukh, Jens, Meunier, Jean-Christophe, Granier, Christelle, Engle, Ronald E., Blackwelder, William C., ...

Our understanding of the humoral immune response to hepatitis C virus (HCV) is limited because the virus can be studied only in humans and chimpanzees and because previously described neutralization...

Characterization of Functional Hepatitis C Virus Envelope Glycoproteins

Op De Beeck, Anne, Voisset, Cécile, Bartosch, Birke, Ciczora, Yann, Cocquerel, Laurence, Keck, Zhenyong, ...

Hepatitis C virus (HCV) encodes two envelope glycoproteins, E1 and E2, that assemble as a noncovalent heterodimer which is mainly retained in the endoplasmic reticulum. Because assembly into...

Neutralizing antibodies to hepatitis C virus (HCV) in immune globulins derived from anti-HCV-positive plasma

Yu, Mei-ying W., Bartosch, Birke, Zhang, Pei, Guo, Zheng-ping, Renzi, Paula M., Shen, Li-ming, ...

The role of humoral immunity in hepatitis C virus (HCV) infections is uncertain. Nevertheless, there is increasing evidence for neutralizing antibodies to HCV in the serum or plasma of chronically...

Evidence and Consequence of Porcine Endogenous Retrovirus Recombination

Bartosch, Birke, Stefanidis, Dimitrios, Myers, Richard, Weiss, Robin, Patience, Clive, Takeuchi, Yasuhiro

The genetic nature and biological effects of recombination between porcine endogenous retroviruses (PERV) were studied. An infectious molecular clone was generated from a high-titer, human-tropic...

Determinants of High Titer in Recombinant Porcine Endogenous Retroviruses

Harrison, Ian, Takeuchi, Yasuhiro, Bartosch, Birke, Stoye, Jonathan P.

Porcine endogenous retroviruses (PERVs) pose a potential stumbling block for therapeutic xenotransplantation, with the greatest threat coming from viruses generated by recombination between members...

Evidence for cross-genotype neutralization of hepatitis C virus pseudo-particles and enhancement of infectivity by apolipoprotein C1

Meunier, Jean-Christophe, Engle, Ronald E., Faulk, Kristina, Zhao, Ming, Bartosch, Birke, Alter, Harvey, ...

The lack of a cell culture system to support hepatitis C virus (HCV) replication has hampered studies of this frequent cause of chronic liver disease. However, pseudotyped retroviral particles (pp)...

Human Serum Facilitates Hepatitis C Virus Infection, and Neutralizing Responses Inversely Correlate with Viral Replication Kinetics at the Acute Phase of Hepatitis C Virus Infection

Lavillette, Dimitri, Morice, Yoann, Germanidis, Georgios, Donot, Peggy, Soulier, Alexandre, Pagkalos, Emanuil, ...

The factors leading to spontaneous clearance of hepatitis C virus (HCV) or to viral persistence are elusive. Understanding virus-host interactions that enable acute HCV clearance is key to the...

An Interplay between Hypervariable Region 1 of the Hepatitis C Virus E2 Glycoprotein, the Scavenger Receptor BI, and High-Density Lipoprotein Promotes both Enhancement of Infection and Protection against Neutralizing Antibodies

Bartosch, Birke, Verney, Géraldine, Dreux, Marlène, Donot, Peggy, Morice, Yoann, Penin, François, ...

Hepatitis C virus (HCV) circulates in the bloodstream in different forms, including complexes with immunoglobulins and/or lipoproteins. To address the significance of such associations, we produced...

Role of N-Linked Glycans in the Functions of Hepatitis C Virus Envelope Glycoproteins

Goffard, Anne, Callens, Nathalie, Bartosch, Birke, Wychowski, Czeslaw, Cosset, François-Loïc, Montpellier, Claire, ...

Hepatitis C virus (HCV) encodes two viral envelope glycoproteins. E1 contains 4 or 5 N-linked glycosylation sites and E2 contains up to 11, with most of the sites being well conserved, suggesting...

Monoclonal Antibody AP33 Defines a Broadly Neutralizing Epitope on the Hepatitis C Virus E2 Envelope Glycoprotein

Owsianka, Ania, Tarr, Alexander W., Juttla, Vicky S., Lavillette, Dimitri, Bartosch, Birke, Cosset, François-Loïc, ...

Hepatitis C virus (HCV) remains a significant threat to the general health of the world's population, and there is a pressing need for the development of new treatments and preventative vaccines....

Analysis of a Highly Flexible Conformational Immunogenic Domain A in Hepatitis C Virus E2

Keck, Zhen-Yong, Li, Ta-Kai, Xia, Jinming, Bartosch, Birke, Cosset, François-Loïc, Dubuisson, Jean, ...

Hepatitis C (HCV) E2 glycoprotein is involved in virus attachment and entry, and its structural organization is largely unknown. Characterization of a panel of human monoclonal antibodies (HMAbs) to...

Basic Residues in Hypervariable Region 1 of Hepatitis C Virus Envelope Glycoprotein E2 Contribute to Virus Entry

Callens, Nathalie, Ciczora, Yann, Bartosch, Birke, Vu-Dac, Ngoc, Cosset, François-Loïc, Pawlotsky, Jean-Michel, ...

The N terminus of hepatitis C virus (HCV) envelope glycoprotein E2 contains a hypervariable region (HVR1) which has been proposed to play a role in viral entry. Despite strong amino acid variability,...

Rapid induction of virus-neutralizing antibodies and viral clearance in a single-source outbreak of hepatitis C

Pestka, Jan M., Zeisel, Mirjam B., Bläser, Edith, Schürmann, Peter, Bartosch, Birke, Cosset, Francois-Loïc, ...

In contrast to a detailed understanding of antiviral cellular immune responses, the impact of neutralizing antibodies for the resolution of acute hepatitis C is poorly defined. The analysis of...

Infectious Hepatitis C Virus Pseudo-particles Containing Functional E1–E2 Envelope Protein Complexes

Bartosch, Birke, Dubuisson, Jean, Cosset, François-Loïc

The study of hepatitis C virus (HCV), a major cause of chronic liver disease, has been hampered by the lack of a cell culture system supporting its replication. Here, we have successfully generated...

Receptor Complementation and Mutagenesis Reveal SR-BI as an Essential HCV Entry Factor and Functionally Imply Its Intra- and Extra-Cellular Domains

Dreux, Marlène, Dao Thi, Viet Loan, Fresquet, Judith, Guérin, Maryse, Julia, Zélie, Verney, Géraldine, ...

HCV entry into cells is a multi-step and slow process. It is believed that the initial capture of HCV particles by glycosaminoglycans and/or lipoprotein receptors is followed by coordinated...

Characterization of Lassa Virus Cell Entry and Neutralization with Lassa Virus Pseudoparticles▿

Cosset, François-Loic, Marianneau, Philippe, Verney, Geraldine, Gallais, Fabrice, Tordo, Noel, Pécheur, Eve-Isabelle, ...

The cell entry and humoral immune response of the human pathogen Lassa virus (LV), a biosafety level 4 (BSL4) Old World arenavirus, are not well characterized. LV pseudoparticles (LVpp) are a...