A broad neutralizing nanobody against SARS-CoV-2 engineered from an approved drug.
Cell Death Dis
; 15(6): 458, 2024 Jun 28.
Article
em En
| MEDLINE
| ID: mdl-38937437
ABSTRACT
SARS-CoV-2 infection is initiated by Spike glycoprotein binding to the human angiotensin-converting enzyme 2 (ACE2) receptor via its receptor binding domain. Blocking this interaction has been proven to be an effective approach to inhibit virus infection. Here we report the discovery of a neutralizing nanobody named VHH60, which was directly produced from an engineering nanobody library based on a commercialized nanobody within a very short period. VHH60 competes with human ACE2 to bind the receptor binding domain of the Spike protein at S351, S470-471and S493-494 as determined by structural analysis, with an affinity of 2.56 nM. It inhibits infections of both ancestral SARS-CoV-2 strain and pseudotyped viruses harboring SARS-CoV-2 wildtype, key mutations or variants at the nanomolar level. Furthermore, VHH60 suppressed SARS-CoV-2 infection and propagation 50-fold better and protected mice from death for twice as long as the control group after SARS-CoV-2 nasal infections in vivo. Therefore, VHH60 is not only a powerful nanobody with a promising profile for disease control but also provides evidence for a highly effective and rapid approach to generating therapeutic nanobodies.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Anticorpos Neutralizantes
/
Anticorpos de Domínio Único
/
Glicoproteína da Espícula de Coronavírus
/
Enzima de Conversão de Angiotensina 2
/
SARS-CoV-2
/
COVID-19
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article