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-Structure paper
Title | Immunofocusing on the conserved fusion peptide of HIV envelope glycoprotein in rhesus macaques. |
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Journal, issue, pages | bioRxiv, Year 2024 |
Publish date | Nov 29, 2024 |
![]() | Payal P Pratap / Christopher A Cottrell / James Quinn / Diane G Carnathan / Daniel L V Bader / Andy S Tran / Chiamaka A Enemuo / Julia T Ngo / Sara T Richey / Hongmei Gao / Xiaoying Shen / Kelli M Greene / Jonathan Hurtado / Katarzyna Kaczmarek Michaels / Elana Ben-Akiva / Joel D Allen / Gabriel Ozorowski / Max Crispin / Bryan Briney / David Montefiori / Guido Silvestri / Darrell J Irvine / Shane Crotty / Andrew B Ward |
PubMed Abstract | During infection, the fusion peptide (FP) of HIV envelope glycoprotein (Env) serves a central role in viral fusion with the host cell. As such, the FP is highly conserved and therefore an attractive ...During infection, the fusion peptide (FP) of HIV envelope glycoprotein (Env) serves a central role in viral fusion with the host cell. As such, the FP is highly conserved and therefore an attractive epitope for vaccine design. Here, we describe a vaccination study in non-human primates (NHPs) where glycan deletions were made on soluble HIV Env to increase FP epitope exposure. When delivered via implantable osmotic pumps, this immunogen primed immune responses against the FP, which were then boosted with heterologous trimers resulting in a focused immune response targeting the conserved FP epitope. Although autologous immunizations did not elicit high affinity FP-targeting antibodies, the conserved FP epitope on a heterologous trimer further matured the lower affinity, FP-targeting B cells. This study suggests using epitope conservation strategies on distinct Env trimer immunogens can focus humoral responses on desired neutralizing epitopes and suppress immune-distracting antibody responses against non-neutralizing epitopes. |
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Methods | EM (single particle) |
Resolution | 3.0 - 25.0 Å |
Structure data | EMDB-49411, PDB-9nhh: EMDB-49412, PDB-9nhi: EMDB-49413, PDB-9nhj: EMDB-49414, PDB-9nhk: EMDB-49415, PDB-9nhl: EMDB-49416, PDB-9nhm: EMDB-49417, PDB-9nhn: EMDB-49418, PDB-9nho: EMDB-49457, PDB-9ni9: ![]() EMDB-70702: nsEM map of macaque RUu18 week 4 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70703: nsEM map of macaque RMu18 week 4 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70704: nsEM map of macaque RQk18 week 4 polyclonal Fab in complex with BG505-CH505dN241 ![]() EMDB-70705: nsEM map of macaque LJ66 week 4 polyclonal Fab in complex with BG505-CH505dN241 ![]() EMDB-70706: nsEM map of macaque RUu18 week 14 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70707: nsEM map of macaque RMu18 week 14 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70708: nsEM map of macaque RQk18 week 14 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70709: nsEM map of macaque LJ66 week 14 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70710: nsEM map of macaque RUu18 week 28 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70711: nsEM map of macaque RMu18 week 28 polyclonal Fab in complex with BG505-CH505+N241 ![]() EMDB-70712: nsEM map of macaque RQk18 week 28 polyclonal Fab in complex with AMC016 ![]() EMDB-70713: nsEM map of macaque LJ66 week 28 polyclonal Fab in complex with AMC016 ![]() EMDB-70714: nsEM map of macaque RUu18 week 43 polyclonal Fab in complex with AMC016 ![]() EMDB-70715: nsEM map of macaque RMu18 week 43 polyclonal Fab in complex with AMC016 ![]() EMDB-70716: nsEM map of macaque RQk18 week 43 polyclonal Fab in complex with AMC016 ![]() EMDB-70717: nsEM map of macaque LJ66 week 43 polyclonal Fab in complex with AMC016 |
Chemicals | ![]() ChemComp-NAG: |
Source |
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / HIV-1 / polyclonal / cryoEMPEM / STRUCTURAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex |