Comparative immunogenicity analysis of modified vaccinia Ankara vectors expressing native or modified forms of hepatitis C virus E1 and E2 glycoproteins.
We have evaluated in C57/Bl6 and HLA-A2.1 transgenic mice the immunogenicity of three MVA vectors expressing either native HCV E1E2 polyprotein, truncated and secreted E1 (E'1(311)) and E2 (E'2(661)) proteins, or a chimeric E1E2 heterodimer presented at the plasma membrane. Immunization induced mainly a Th1 response in HLA-A2.1 transgenic mice while a Th2-type response was detected in C57/Bl6 mice. Comparison of the three vectors shows an increase in the humoral response when antigens are secreted or membrane bound, and slightly in the cellular response when antigens are exposed on the cell surface.
Abraham
Jean-Daniel
JD
INSERM U544-Institut de Virologie, 67000 Strasbourg, France.
Himoudi
Nourredine
N
Kien
François
F
Berland
Jean-Luc
JL
Codran
Audrey
A
Bartosch
Birke
B
Baumert
Thomas
T
Paranhos-Baccala
Glaucia
G
Schuster
Catherine
C
Inchauspé
Geneviève
G
Kieny
Marie Paule
MP
D000818:Animals; D005822:Genetic Vectors; D016174:Hepacivirus / Q000235:genetics / Q000276:immunology*; D018937:Hepatitis C Antibodies / Q000097:blood*; D007074:Immunoglobulin G / Q000097:blood; D007371:Interferon-gamma / Q000032:analysis; D008213:Lymphocyte Activation; D051379:Mice; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D011993:Recombinant Fusion Proteins / Q000276:immunology; D011994:Recombinant Proteins / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D018417:Th1 Cells / Q000276:immunology; D014614:Vaccines, Synthetic / Q000276:immunology; D014759:Viral Envelope Proteins / Q000235:genetics / Q000276:immunology*; D014761:Viral Hepatitis Vaccines / Q000276:immunology*
C087035:E1 protein, Hepatitis C virus; D018937:Hepatitis C Antibodies; D007074:Immunoglobulin G; D011993:Recombinant Fusion Proteins; D011994:Recombinant Proteins; D014614:Vaccines, Synthetic; D014759:Viral Envelope Proteins; D014761:Viral Hepatitis Vaccines; D007371:Interferon-gamma