Abstract

The membrane-proximal external region (MPER) of HIV-1 envelope glycoprotein (Env) can be targeted by neutralizing antibodies of exceptional breadth. MPER antibodies usually have long, hydrophobic CDRH3s, lack activity as inferred germline precursors, are often from the minor IgG3 subclass, and some are polyreactive, such as 4E10. Here we describe an MPER broadly neutralizing antibody from the major IgG1 subclass, PGZL1, which shares germline V/D-region genes with 4E10, has a shorter CDRH3, and is less polyreactive. A recombinant sublineage variant pan-neutralizes a 130-isolate panel at 1.4 μg/ml (IC50). Notably, a germline revertant with mature CDR3s neutralizes 12% of viruses and still binds MPER after DJ reversion. Crystal structures of lipid-bound PGZL1 variants and cryo-EM reconstruction of an Env-PGZL1 complex reveal how these antibodies recognize MPER and viral membrane. Discovery of common genetic and structural elements among MPER antibodies from different patients suggests that such antibodies could be elicited using carefully designed immunogens.

Details

Title
An MPER antibody neutralizes HIV-1 using germline features shared among donors
Author
Zhang, Lei 1 ; Irimia, Adriana 2 ; He, Lingling 3 ; Landais, Elise 4 ; Rantalainen, Kimmo 5 ; Leaman, Daniel P 6 ; Vollbrecht, Thomas 7   VIAFID ORCID Logo  ; Stano, Armando 6 ; Sands, Daniel I 6   VIAFID ORCID Logo  ; Kim, Arthur S 8   VIAFID ORCID Logo  ; Miiro, George 9 ; Serwanga, Jennifer 9 ; Pozniak, Anton 10 ; McPhee, Dale 11 ; Manigart, Oliver 12 ; Mwananyanda, Lawrence 12 ; Karita, Etienne 13 ; Inwoley, André 14 ; Jaoko, Walter 15 ; DeHovitz, Jack 16 ; Linda-Gail Bekker 17 ; Pitisuttithum, Punnee 18 ; Paris, Robert 19 ; Allen, Susan 20 ; Poignard, Pascal 21 ; Burton, Dennis R 22   VIAFID ORCID Logo  ; Murrell, Ben 23 ; Ward, Andrew B 2   VIAFID ORCID Logo  ; Zhu, Jiang 3 ; Wilson, Ian A 24   VIAFID ORCID Logo  ; Zwick, Michael B 6 

 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; CTK Biotech, Inc., Poway, California, USA 
 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA 
 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA 
 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative, New York, New York, USA 
 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA 
 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA 
 Department of Medicine, University of California, San Diego, California, USA 
 Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; Departments of Medicine, Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA 
 MRC/UVRI Uganda Research Unit on AIDS, Uganda Virus Research Institute, Entebbe, Uganda 
10  St Stephens AIDS Trust, Chelsea and Westminster NHS Foundation Trust, London, UK 
11  NRL, St Vincent’s Institute, Melbourne, Victoria, Australia 
12  Zambia Emory HIV Research Project, Lusaka, Zambia and Rwanda-Zambia HIV Research Group, Emory University, Atlanta, GA, USA 
13  Projet San Francisco, Kigali, Rwanda and the Rwanda-Zambia HIV Research Group, Emory University, Atlanta, GA, USA 
14  CeDReS/CHU Treichville, Abidjan, Côte d’Ivoire 
15  Kenya AIDS Vaccine Initiative, College of Health Sciences, University of Nairobi, Nairobi, Kenya 
16  SUNY Downstate Medical Center, Brooklyn, New York, USA 
17  Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa 
18  Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand 
19  Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand 
20  Rwanda-Zambia HIV Research Group, Emory University, Atlanta, Georgia, USA 
21  Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative, New York, New York, USA; Institut de Biologie Structurale, Université Grenoble Alpes, Commissariat a l’Energie Atomique, Centre National de Recherche Scientifique and Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France 
22  Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA; Ragon Institute of Massachusetts General Hospital, MIT and Harvard, Cambridge, Massachussetts, USA 
23  Department of Medicine, University of California, San Diego, California, USA; Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden 
24  Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA; International AIDS Vaccine Initiative Neutralizing Antibody Center and the Collaboration for AIDS Vaccine Discovery, The Scripps Research Institute, La Jolla, California, USA; Scripps Consortium for HIV/AIDS Vaccine Development, The Scripps Research Institute, La Jolla, California, USA; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California, USA 
Pages
1-16
Publication year
2019
Publication date
Nov 2019
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2318717826
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.