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Virus like particle based strategy to elicit HIV-protective antibodies to the alpha-helic regions of gp41.

Abstract：

:Natural antibodies to gp41 inhibit HIV-1 replication through the recognition of two different regions, corresponding to the leucine zipper motif in the HR1 alpha-helix and to another motif within HR2 region, hosting 2F5 and 4E10 epitope. This study aimed at reproducing such protective responses through VLP vaccination. Six regions covering the alpha-helical regions of gp41 were conjugated to the surface of AP205 phage-based VLPs. Once administered in mice via systemic or mucosal route, these immunogens elicited high titers of gp41-specific IgG. Immunogenicity and HIV infectivity reduction were obtained either with HR2 regions or with peptides where aminoacid strings were added to either the C-terminus or N-terminus of core epitope in HR1 region. Antibody-dependent cell cytotoxicity (ADCC) activity was induced by one of the HR2 epitopes only. These results may have relevant implications for the development of new vaccinal approaches against HIV infection.

journal_name

Virology

journal_title

Virology

authors

Pastori C,Tudor D,Diomede L,Drillet AS,Jegerlehner A,Röhn TA,Bomsel M,Lopalco L

doi

10.1016/j.virol.2012.05.005

subject

Has Abstract

pub_date

2012-09-15 00:00:00

pages

1-11

issue

1-2

eissn

0042-6822

issn

1096-0341

pii

S0042-6822(12)00238-3

journal_volume

431

pub_type

杂志文章

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