1. Immunopotentiation of the antibody response against influenza HA with apoptotic bodies generated by rabies virus G-ERA protein-driven apoptosis.
- Author
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Mégret F, Prehaud C, Lafage M, Batejat C, Escriou N, Lay S, Thoulouze MI, and Lafon M
- Subjects
- Adjuvants, Immunologic, Animals, Antibodies, Monoclonal, Antigen-Presenting Cells immunology, Cell Line, Chlorocebus aethiops, Enzyme-Linked Immunosorbent Assay, Humans, Immunohistochemistry, Indicators and Reagents, Mice, Mice, Inbred C57BL, Vaccines, Synthetic immunology, Antigens, Viral immunology, Apoptosis immunology, Glycoproteins immunology, Hemagglutinins immunology, Influenza A Virus, H1N1 Subtype immunology, Influenza Vaccines immunology, Viral Envelope Proteins immunology
- Abstract
Apoptosis is considered to be a way of eliminating unwanted cells without causing major inflammation. Nevertheless, several lines of evidence show that apoptotic cell-derived antigens can be strong immunogens. The rabies virus glycoprotein G-ERA is an apoptotic molecule. We tested the ability of G-ERA to potentiate a B cell response against an exogenous antigen (influenza hemagglutinin, HA). We found that co-expression of G-ERA and HA in apoptotic bodies increased both the primary and memory HA-specific immune responses. The immunopotentiation of G-ERA is apoptosis-mediated but not necrosis-mediated. Our data indicate that G-ERA-mediated apoptosis might be useful to improve the immunogenicity of live vaccines.
- Published
- 2005
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