Abstract
Most HIV-1-specific neutralizing antibodies isolated to date exhibit unusual characteristics that complicate their elicitation. Neutralizing antibodies that target the V1V2 apex of the HIV-1 envelope (Env) trimer feature unusually long protruding loops, which enable them to penetrate the HIV-1 glycan shield. As antibodies with loops of requisite length are created through uncommon recombination events, an alternative mode of apex binding has been sought. Here, we isolated a lineage of Env apex-directed neutralizing antibodies, N90-VRC38.01-11, by using virus-like particles and conformationally stabilized Env trimers as B cell probes. A crystal structure of N90-VRC38.01 with a scaffolded V1V2 revealed a binding mode involving side-chain-to-side-chain interactions that reduced the distance the antibody loop must traverse the glycan shield, thereby facilitating V1V2 binding via a non-protruding loop. The N90-VRC38 lineage thus identifies a solution for V1V2-apex binding that provides a more conventional B cell pathway for vaccine design.
Original language | English (US) |
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Pages (from-to) | 777-791.e10 |
Journal | Immunity |
Volume | 46 |
Issue number | 5 |
DOIs | |
State | Published - May 16 2017 |
Funding
This work was supported by NIH grants RO1AI00790, RO1AI93278, and R33AI84714 (J.M.B.) U19AI117892-02 (T.B.K.), and by the intramural research program of the Vaccine Research Center, NIAID, NIH. We thank Bob Whalen (Altravax) for Rev and SIV Gag plasmids, Yang Dai (Scripps Research Institute) for the pAV MLV Gag plasmid, David Montefiori (Duke University) for large cohort serum-virus neutralization data, and Jonathan Stuckey for assistance with figures. Use of sector 22 (Southeast Region Collaborative Access team) at the Advanced Photon Source was supported by the US Department of Energy, Basic Energy Sciences, Office of Science, under contract #W-31-109-Eng-38. We thank donor N90 for participating. We thank J. Baalwa, D. Ellenberger, F. Gao, B. Hahn, K. Hong, J. Kim, F. McCutchan, D. Montefiori, L. Morris, J. Overbaugh, E. Sanders-Buell, G. Shaw, R. Swanstrom, M. Thomson, S. Tovanabutra, C. Williamson, and L. Zhang for contributing the HIV-1 Envelope plasmids used in our neutralization panel.
Keywords
- B cell ontogeny
- CDRH3
- HIV
- NAb
- V1V2
- VLP
- antibody
- bnAb
- glycan shield
- neutralization
- trimer
- vaccine-design template
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology
- Infectious Diseases
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Dive into the research topics of 'Virus-like Particles Identify an HIV V1V2 Apex-Binding Neutralizing Antibody that Lacks a Protruding Loop'. Together they form a unique fingerprint.Datasets
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Crystal Structure of the Human Fab VRC38.01, an HIV-1 V1V2-Directed Neutralizing Antibody Isolated from Donor N90, bound to a scaffolded WITO V1V2 domain
Cale, E. M. (Contributor), Gorman, J. (Contributor), Radakovich, N. A. (Contributor), Crooks, E. T. (Contributor), Osawa, K. (Contributor), Tong, T. (Contributor), Li, J. (Contributor), Nagarajan, R. (Contributor), Ozorowski, G. (Contributor), Ambrozak, D. R. (Contributor), Asokan, M. (Contributor), Bailer, R. T. (Contributor), Bennici, A. K. (Contributor), Chen, X. (Contributor), Doria-Rose, N. A. (Contributor), Druz, A. (Contributor), Feng, Y. (Contributor), Joyce, M. G. (Contributor), Louder, M. K. (Contributor), O'Dell, S. (Contributor), Oliver, C. (Contributor), Pancera, M. (Contributor), Connors, M. (Contributor), Hope, T. J. (Contributor), Kepler, T. B. (Contributor), Wyatt, R. T. (Contributor), Ward, A. B. (Contributor), Georgiev, I. S. (Contributor), Kwong, P. D. (Contributor), Mascola, J. R. (Contributor) & Binley, J. M. (Contributor), Protein Data Bank (PDB), May 31 2017
DOI: 10.2210/pdb5VGJ/pdb, https://www.wwpdb.org/pdb?id=pdb_00005vgj
Dataset
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Crystal Structure of the Human Fab VRC38.01, an HIV-1 V1V2-Directed Neutralizing Antibody Isolated from Donor N90
Cale, E. M. (Contributor), Gorman, J. (Contributor), Radakovich, N. A. (Contributor), Crooks, E. T. (Contributor), Osawa, K. (Contributor), Tong, T. (Contributor), Li, J. (Contributor), Nagarajan, R. (Contributor), Ozorowski, G. (Contributor), Ambrozak, D. R. (Contributor), Asokan, M. (Contributor), Bailer, R. T. (Contributor), Bennici, A. K. (Contributor), Chen, X. (Contributor), Doria-Rose, N. A. (Contributor), Druz, A. (Contributor), Feng, Y. (Contributor), Joyce, M. G. (Contributor), Louder, M. K. (Contributor), O'Dell, S. (Contributor), Oliver, C. (Contributor), Pancera, M. (Contributor), Connors, M. (Contributor), Hope, T. J. (Contributor), Kepler, T. B. (Contributor), Wyatt, R. T. (Contributor), Ward, A. B. (Contributor), Georgiev, I. S. (Contributor), Kwong, P. D. (Contributor), Mascola, J. R. (Contributor) & Binley, J. M. (Contributor), Protein Data Bank (PDB), Nov 23 2016
DOI: 10.2210/pdb5EWI/pdb, https://www.wwpdb.org/pdb?id=pdb_00005ewi
Dataset