Mapping the immunogenic landscape of near-native HIV-1 envelope trimers in non-human primates
By
Christopher A Cottrell,
Jelle van Schooten,
Charles A. Bowman,
Meng Yuan,
David Oyen,
Mia Shin,
Robert Morpurgo,
Patricia van der Woude,
Marielle van Breemen,
Jonathan L. Torres,
Raj Patel,
Justin Gross,
Leigh M. Sewall,
Jeffrey Copps,
Gabriel Ozorowski,
Bartek Nogal,
Devin Sok,
Eva G Rakasz,
Celia Labranche,
Vladimir Vigdorovich,
Scott Christley,
Diane G. Carnathan,
D. Noah Sather,
DC Montefiori,
Guido Silvestri,
Dennis R. Burton,
John P Moore,
Ian A. Wilson,
Rogier W. Sanders,
Andrew B. Ward,
Marit J. van Gils
Posted 07 Feb 2020
bioRxiv DOI: 10.1101/2020.02.05.936096
(published DOI: 10.1371/journal.ppat.1008753)
The induction of broad and potent immunity by vaccines is the key focus of research efforts aimed at protecting against HIV-1 infection. Soluble native-like HIV-1 envelope glycoproteins have shown promise as vaccine candidates as they can induce potent autologous neutralizing responses in rabbits and non-human primates. In this study, monoclonal antibodies were isolated and characterized from rhesus macaques immunized with the BG505 SOSIP.664 trimer to better understand vaccine-induced antibody responses. Our studies reveal a diverse landscape of antibodies recognizing immunodominant strain-specific epitopes and non-neutralizing neo-epitopes. Additionally, we isolated a subset of mAbs against an epitope cluster at the gp120-gp41 interface that recognize the highly conserved fusion peptide and the glycan at position 88 and have characteristics akin to several human-derived broadly neutralizing antibodies.
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