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Title: Key gp120 Glycans Pose Roadblocks to the Rapid Development of VRC01-Class Antibodies in an HIV-1-Infected Chinese Donor

Journal Article · · Immunity

VRC01-class antibodies neutralize diverse HIV-1 strains by targeting the conserved CD4-binding site. Despite extensive investigations, crucial events in the early stage of VRC01 development remain elusive. We demonstrated how VRC01-class antibodies emerged in a Chinese donor by antigen-specific single B cell sorting, structural and functional studies, and longitudinal antibody and virus repertoire analyses. A monoclonal antibody DRVIA7 with modest neutralizing breadth was isolated that displayed a subset of VRC01 signatures. X-ray and EM structures revealed a VRC01-like angle of approach, but less favorable interactions between the DRVIA7 light-chain CDR1 and the N terminus with N276 and V5 glycans of gp120. Although the DRVIA7 lineage was unable to acquire broad neutralization, longitudinal analysis revealed a repertoire-encoded VRC01 light-chain CDR3 signature and VRC01-like neutralizing heavy-chain precursors that rapidly matured within 2 years. Furthermore, light chain accommodation of the glycan shield should be taken into account in vaccine design targeting this conserved site of vulnerability.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); NIH NIGMS; SKLID Development; NIH NIAID; NIH CIPRA
Grant/Contract Number:
AC02-06CH11357; U54 GM094586; 2012SKLID103; R01 AI102766; AI084817; P30AI36214; U19AI51915; 2012ZX10001008; UM1 AI100663; P01 AI110657
OSTI ID:
1352095
Alternate ID(s):
OSTI ID: 1252759
Journal Information:
Immunity, Journal Name: Immunity Vol. 44 Journal Issue: 4; ISSN 1074-7613
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 70 works
Citation information provided by
Web of Science

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