Mimicry of an HIV broadly neutralizing antibody epitope with a synthetic glycopeptide.
Sci Transl Med
; 9(381)2017 03 15.
Article
em En
| MEDLINE
| ID: mdl-28298421
A goal for an HIV-1 vaccine is to overcome virus variability by inducing broadly neutralizing antibodies (bnAbs). One key target of bnAbs is the glycan-polypeptide at the base of the envelope (Env) third variable loop (V3). We have designed and synthesized a homogeneous minimal immunogen with high-mannose glycans reflective of a native Env V3-glycan bnAb epitope (Man9-V3). V3-glycan bnAbs bound to Man9-V3 glycopeptide and native-like gp140 trimers with similar affinities. Fluorophore-labeled Man9-V3 glycopeptides bound to bnAb memory B cells and were able to be used to isolate a V3-glycan bnAb from an HIV-1-infected individual. In rhesus macaques, immunization with Man9-V3 induced V3-glycan-targeted antibodies. Thus, the Man9-V3 glycopeptide closely mimics an HIV-1 V3-glycan bnAb epitope and can be used to isolate V3-glycan bnAbs.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Glicopeptídeos
/
HIV-1
/
Mimetismo Molecular
/
Anticorpos Neutralizantes
/
Epitopos
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article