Initiation of immune tolerance–controlled HIV gp41 neutralizing B cell lineages
Journal Article
·
· Science Translational Medicine
more »
- Duke Univ. School of Medicine, Durham, NC (United States)
- Beth Israel Deaconess Medical Center, Boston, MA (United States)
- Univ. of Washington, Seattle, WA (United States); BioMarin Pharmaceutical Inc., Novato, CA (United States)
- Univ. of Washington, Seattle, WA (United States)
- Boston Univ. School of Medicine, Boston, MA (United States)
Development of an HIV vaccine is a global priority. A major roadblock to a vaccine is an inability to induce protective broadly neutralizing antibodies (bnAbs). HIV gp41 bnAbs have characteristics that predispose them to be controlled by tolerance. We used gp41 2F5 bnAb germline knock-in mice and macaques vaccinated with immunogens reactive with germline precursors to activate neutralizing antibodies. In germline knock-in mice, bnAb precursors were deleted, with remaining anergic B cells capable of being activated by germline-binding immunogens to make gp41-reactive immunoglobulin M (IgM). Immunized macaques made B cell clonal lineages targeted to the 2F5 bnAb epitope, but 2F5-like antibodies were either deleted or did not attain sufficient affinity for gp41-lipid complexes to achieve the neutralization potency of 2F5. Structural analysis of members of a vaccine-induced antibody lineage revealed that heavy chain complementarity-determining region 3 (HCDR3) hydrophobicity was important for neutralization. Furthermore, gp41 bnAbs are controlled by immune tolerance, requiring vaccination strategies to transiently circumvent tolerance controls.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery; NIH; National Inst. of Allergy and Infectious Diseases; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 1257467
- Journal Information:
- Science Translational Medicine, Journal Name: Science Translational Medicine Journal Issue: 336 Vol. 8; ISSN 1946-6234
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Initiation of HIV neutralizing B cell lineages with sequential envelope immunizations
Vaccination induces broadly neutralizing antibody precursors to HIV gp41
Potent and broad HIV-neutralizing antibodies in memory B cells and plasma
Journal Article
·
Wed Nov 22 19:00:00 EST 2017
· Nature Communications
·
OSTI ID:1462570
Vaccination induces broadly neutralizing antibody precursors to HIV gp41
Journal Article
·
Wed May 29 20:00:00 EDT 2024
· Nature Immunology
·
OSTI ID:2470208
Potent and broad HIV-neutralizing antibodies in memory B cells and plasma
Journal Article
·
Thu Jan 26 19:00:00 EST 2017
· Science Immunology
·
OSTI ID:1460631