Co-evolution of a broadly neutralizing HIV-1 antibody and founder virus.

Journal Article

Current human immunodeficiency virus-1 (HIV-1) vaccines elicit strain-specific neutralizing antibodies. However, cross-reactive neutralizing antibodies arise in approximately 20% of HIV-1-infected individuals, and details of their generation could provide a blueprint for effective vaccination. Here we report the isolation, evolution and structure of a broadly neutralizing antibody from an African donor followed from the time of infection. The mature antibody, CH103, neutralized approximately 55% of HIV-1 isolates, and its co-crystal structure with the HIV-1 envelope protein gp120 revealed a new loop-based mechanism of CD4-binding-site recognition. Virus and antibody gene sequencing revealed concomitant virus evolution and antibody maturation. Notably, the unmutated common ancestor of the CH103 lineage avidly bound the transmitted/founder HIV-1 envelope glycoprotein, and evolution of antibody neutralization breadth was preceded by extensive viral diversification in and near the CH103 epitope. These data determine the viral and antibody evolution leading to induction of a lineage of HIV-1 broadly neutralizing antibodies, and provide insights into strategies to elicit similar antibodies by vaccination.

Full Text

Duke Authors

Cited Authors

  • Liao, H-X; Lynch, R; Zhou, T; Gao, F; Alam, SM; Boyd, SD; Fire, AZ; Roskin, KM; Schramm, CA; Zhang, Z; Zhu, J; Shapiro, L; NISC Comparative Sequencing Program, ; Mullikin, JC; Gnanakaran, S; Hraber, P; Wiehe, K; Kelsoe, G; Yang, G; Xia, S-M; Montefiori, DC; Parks, R; Lloyd, KE; Scearce, RM; Soderberg, KA; Cohen, M; Kamanga, G; Louder, MK; Tran, LM; Chen, Y; Cai, F; Chen, S; Moquin, S; Du, X; Joyce, MG; Srivatsan, S; Zhang, B; Zheng, A; Shaw, GM; Hahn, BH; Kepler, TB; Korber, BTM; Kwong, PD et al.

Published Date

  • April 25, 2013

Published In

Volume / Issue

  • 496 / 7446

Start / End Page

  • 469 - 476

PubMed ID

  • 23552890

Electronic International Standard Serial Number (EISSN)

  • 1476-4687

Digital Object Identifier (DOI)

  • 10.1038/nature12053

Language

  • eng

Conference Location

  • England