Structural and genetic convergence of HIV-1 neutralizing antibodies in vaccinated non-human primates.
Journal Article (Journal Article)
A primary goal of HIV-1 vaccine development is the consistent elicitation of protective, neutralizing antibodies. While highly similar neutralizing antibodies (nAbs) have been isolated from multiple HIV-infected individuals, it is unclear whether vaccination can consistently elicit highly similar nAbs in genetically diverse primates. Here, we show in three outbred rhesus macaques that immunization with Env elicits a genotypically and phenotypically conserved nAb response. From these vaccinated macaques, we isolated four antibody lineages that had commonalities in immunoglobulin variable, diversity, and joining gene segment usage. Atomic-level structures of the antigen binding fragments of the two most similar antibodies showed nearly identical paratopes. The Env binding modes of each of the four vaccine-induced nAbs were distinct from previously known monoclonal HIV-1 neutralizing antibodies, but were nearly identical to each other. The similarities of these antibodies show that the immune system in outbred primates can respond to HIV-1 Env vaccination with a similar structural and genotypic solution for recognizing a particular neutralizing epitope. These results support rational vaccine design for HIV-1 that aims to reproducibly elicit, in genetically diverse primates, nAbs with specific paratope structures capable of binding conserved epitopes.
Full Text
Duke Authors
- Haynes, Barton Ford
- LaBranche, Celia Crane
- Montefiori, David Charles
- Moody, Michael Anthony
- Saunders, Kevin O'Neil
- Shen, Xiaoying
- Tomaras, Georgia Doris
- Wiehe, Kevin J
Cited Authors
- Cai, F; Chen, W-H; Wu, W; Jones, JA; Choe, M; Gohain, N; Shen, X; LaBranche, C; Eaton, A; Sutherland, L; Lee, EM; Hernandez, GE; Wu, NR; Scearce, R; Seaman, MS; Moody, MA; Santra, S; Wiehe, K; Tomaras, GD; Wagh, K; Korber, B; Bonsignori, M; Montefiori, DC; Haynes, BF; de Val, N; Joyce, MG; Saunders, KO
Published Date
- June 2021
Published In
Volume / Issue
- 17 / 6
Start / End Page
- e1009624 -
PubMed ID
- 34086838
Pubmed Central ID
- PMC8216552
Electronic International Standard Serial Number (EISSN)
- 1553-7374
Digital Object Identifier (DOI)
- 10.1371/journal.ppat.1009624
Language
- eng
Conference Location
- United States