| Literature DB >> 28298421 |
S Munir Alam1,2,3, Baptiste Aussedat4, Yusuf Vohra4, R Ryan Meyerhoff1,5, Evan M Cale6, William E Walkowicz4, Nathan A Radakovich6, Kara Anasti1, Lawrence Armand1, Robert Parks1, Laura Sutherland1, Richard Scearce1, M Gordon Joyce6, Marie Pancera6, Aliaksandr Druz6, Ivelin S Georgiev6, Tarra Von Holle1, Amanda Eaton1, Christopher Fox7, Steven G Reed7, Mark Louder6, Robert T Bailer6, Lynn Morris8,9, Salim S Abdool-Karim8,9, Myron Cohen10, Hua-Xin Liao1,2, David C Montefiori1,2,11, Peter K Park4, Alberto Fernández-Tejada4, Kevin Wiehe1, Sampa Santra12, Thomas B Kepler13, Kevin O Saunders1,11, Joseph Sodroski14, Peter D Kwong6, John R Mascola6, Mattia Bonsignori1,2, M Anthony Moody1,5,15, Samuel Danishefsky4, Barton F Haynes1,2,5.
Abstract
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.Entities:
Mesh:
Substances:
Year: 2017 PMID: 28298421 PMCID: PMC5562351 DOI: 10.1126/scitranslmed.aai7521
Source DB: PubMed Journal: Sci Transl Med ISSN: 1946-6234 Impact factor: 17.956