Download MendeleyEnv-antibody coevolution identifies B cell priming as the principal bottleneck to HIV V2 apex broadly neutralizing antibody development.
Habib, R., Roark, R.S., Li, H., Connell, A.J., Hogarty, M.P., Wagh, K., Wang, S., Marchitto, L., Skelly, A.N., Carey, J.W., Sowers, K.J., Ayyanathan, K., Plante, S.J., Bibollet-Ruche, F., Park, Y., Agostino, C.J., Singh, A., Martella, C.L., Lewis, E., Rando, J.M., Chohan, N., Lora, J., Ding, W., Campion, M.S., Zhao, C., Liu, W., Li, Y., Li, X., Liang, B., Chowdhury, R.R., Amereh, K., Van Itallie, E., Sheng, Z., Ghosh, A.R., Bar, K.J., Williams, W.B., Wiehe, K., Saunders, K.O., Edwards, R.J., Cain, D.W., Lewis, M.G., Batista, F.D., Burton, D.R., Andrabi, R., Kulp, D.W., Haynes, B.F., Korber, B., Shapiro, L., Kwong, P.D., Hahn, B.H., Shaw, G.M.(2026) Sci Immunol 11: eadz3933-eadz3933
- PubMed: 41686912
- DOI: https://doi.org/10.1126/sciimmunol.adz3933
- Primary Citation of Related Structures:
9OMG - PubMed Abstract:
Broadly neutralizing antibodies (bNAbs) are rarely elicited during HIV-1 infection. To identify obstacles to bNAb development, we longitudinally studied 122 rhesus macaques infected by 1 of 16 different simian-human immunodeficiency viruses (SHIVs). We identified the V2 apex region of the envelope (Env) as the most common bNAb target and a subset of Envs that preferentially elicited these antibodies. In 10 macaques, we delineated Env-antibody coevolution from B cell priming to bNAb development. Antibody phylogenies revealed permissive developmental pathways guided by evolving Envs that contained few mutations in or near the V2 apex C-strand, which were a sensitive indicator of apex-targeted responses. The absence of such mutations reflected a failure in bNAb priming. These results indicate that efficiency of B cell priming, and not complexities in Env-guided affinity maturation, is a primary obstacle to V2 apex bNAb elicitation in SHIV-infected macaques and identify specific HIV-1 Envs to advance as vaccine platforms.
- Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
Organizational Affiliation:
