Structural Constraints of Vaccine-Induced Tier-2 Autologous HIV Neutralizing Antibodies Targeting the Receptor-Binding Site
more »
- Duke Univ. School of Medicine, Durham, NC (United States)
- Harvard Medical School, Boston, MA (United States)
- National Inst. for Communicable Diseases, Johannesburg (South Africa); Univ. of the Witwatersrand, Johannesburg (South Africa)
- Univ. of KwaZulu-Natal, Durban (South Africa); Columbia Univ., New York, NY (United States)
- Novartis Vaccines and Diagnostics, Inc., Cambridge, MA (United States)
- Boston Univ., MA (United States)
- National Inst. for Communicable Diseases, Johannesburg (South Africa); Univ. of KwaZulu-Natal, Durban (South Africa); Univ. of the Witwatersrand, Johannesburg (South Africa)
- Harvard Medical School, Boston, MA (United States); Howard Hughes Medical Inst., Boston, MA (United States)
Antibodies that neutralize autologous transmitted/founder (TF) HIV occur in most HIV-infected individuals and can evolve to neutralization breadth. Autologous neutralizing antibodies (nAbs) against neutralization-resistant (Tier-2) viruses are rarely induced by vaccination. Whereas broadly neutralizing antibody (bnAb)-HIV-Envelope structures have been defined, the structures of autologous nAbs have not. Here, we show that immunization with TF mutant Envs gp140 oligomers induced high-titer, V5-dependent plasma neutralization for a Tier-2 autologous TF evolved mutant virus. Structural analysis of autologous nAb DH427 revealed binding to V5, demonstrating the source of narrow nAb specificity and explaining the failure to acquire breadth. Thus, oligomeric TF Envs can elicit autologous nAbs to Tier-2 HIVs, but induction of bnAbs will require targeting of precursors of B cell lineages that can mature to heterologous neutralization.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- NIH/NIAID/DAIDS
- OSTI ID:
- 1234757
- Journal Information:
- Cell Reports, Journal Name: Cell Reports Journal Issue: 1 Vol. 14; ISSN 2211-1247
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
HIV-1 Neutralizing Antibody Signatures and Application to Epitope-Targeted Vaccine Design
Viral Envelope Evolution in Simian–HIV-Infected Neonate and Adult-Dam Pairs of Rhesus Macaques
Improving the Immunogenicity of Native-like HIV-1 Envelope Trimers by Hyperstabilization
Journal Article
·
Mon Dec 31 23:00:00 EST 2018
· Cell Host & Microbe
·
OSTI ID:1623654
Viral Envelope Evolution in Simian–HIV-Infected Neonate and Adult-Dam Pairs of Rhesus Macaques
Journal Article
·
Tue Jun 25 00:00:00 EDT 2024
· Viruses
·
OSTI ID:2470525
Improving the Immunogenicity of Native-like HIV-1 Envelope Trimers by Hyperstabilization
Journal Article
·
Tue Aug 22 00:00:00 EDT 2017
· Cell Reports
·
OSTI ID:1499807