Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
T helper cell epitopes of the human immunodeficiency virus (HIV-1) nef protein in rats and chimpanzees
Molecular Immunology, Volume 29, No. 4, Year 1992
Notification
URL copied to clipboard!
Description
T helper cell antigenic and immunogenic determinants of the nef protein were investigated in the rat and chimpanzee models using recombinant nef protein and five synthetic peptides selected according to their amphipathic and α-helicity properties. The nef protein was shown to be immunogenic with both Freund's or aluminium hydroxide adjuvants. After immunization with the nef protein the 45-69 peptide was the most antigenic in rat and monkey models. In contrast, the 98-112 peptide, that required a carrier protein to induce in vitro rat T cell recall proliferation, was able to restimulate monkey T cells in the absence of a carrier. The amino acid sequence carrying the antigenic activity of the 45-69 peptide was further investigated by synthesizing short peptides overlapping this region. The antigenic sequence was precisely located in the middle of the peptide (region 50-59). This sequence was antigenic only when Nα-acetylated. Circular dichroism analysis of the 45-69 peptide and the in vitro activity of the N-tenninus group indicate in this case the involvement of the α-helical propensity for antigen presentation. However, the shorter sequence 50-64, able to induce a T cell reactivity, was determined as a β-pleated sheet structure in aqueous solution. The 45-69 peptide was not only antigenic but also immunogenic and behaved in vivo as a functional T helper cell epitope. Indeed, the priming with the peptide or the transfer of peptide specific T cells to a naive recipient, followed by immunization with the nef protein, enhanced the subsequent antibody response to the nef protein. Together, these data indicate that the 45-69 peptide appears as a candidate for the in vivo elicitation of T cell immunity to the HIV-1 nef regulatory protein. © 1992.
Authors & Co-Authors
Estaquier, Jérôme
France, Lille
Institut Pasteur de Lille
Boutillon, Christophe
France, Lille
Institut Pasteur de Lille
Ameisen, Jean Claude
France, Lille
Institut Pasteur de Lille
Gras-Masse, Hélène S.
France, Lille
Institut Pasteur de Lille
Lecocq, Jean Pierre
France, Strasbourg
Transgene sa
Barbier, Bernard
France, Orleans
Cbm Centre de Biophysique Moléculaire
Dixson, Alan
Gabon
Centre International de Recherches Médicales (cirm) de Franceville
Tartar, André L.
France, Lille
Institut Pasteur de Lille
Caprón, André R.
France, Lille
Institut Pasteur de Lille
Auriault, Claude
France, Lille
Institut Pasteur de Lille
Statistics
Citations: 11
Authors: 10
Affiliations: 4
Identifiers
Doi:
10.1016/0161-5890(92)90006-J
Research Areas
Infectious Diseases
Maternal And Child Health