A nanobody recognizes a unique conserved epitope and potently neutralizes SARS-CoV-2 omicron variants.
Decision science
Information system model
Public health
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
21 Jul 2023
21 Jul 2023
Historique:
received:
09
02
2023
revised:
12
04
2023
accepted:
06
06
2023
medline:
26
6
2023
pubmed:
26
6
2023
entrez:
26
6
2023
Statut:
epublish
Résumé
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) Omicron variant sub-lineages spread rapidly worldwide, mostly due to their immune-evasive properties. This has put a significant part of the population at risk for severe disease and underscores the need for effective anti-SARS-CoV-2 agents against emergent strains in vulnerable patients. Camelid nanobodies are attractive therapeutic candidates due to their high stability, ease of large-scale production, and potential for delivery via inhalation. Here, we characterize the receptor binding domain (RBD)-specific nanobody W25 and show superior neutralization activity toward Omicron sub-lineages in comparison to all other SARS-CoV2 variants. Structure analysis of W25 in complex with the SARS-CoV2 spike glycoprotein shows that W25 engages an RBD epitope not covered by any of the antibodies previously approved for emergency use.
Identifiants
pubmed: 37361875
doi: 10.1016/j.isci.2023.107085
pii: S2589-0042(23)01162-8
pmc: PMC10251734
doi:
Types de publication
Journal Article
Langues
eng
Pagination
107085Informations de copyright
© 2023.
Déclaration de conflit d'intérêts
D.W., K.C., and P.R.Y are listed as inventors of ‘Molecular Clamp’ patent, US 2020/0040042.