A new class of broadly neutralizing antibodies that target the glycan loop of Zika virus envelope protein.
Biological techniques
Immunology
Journal
Cell discovery
ISSN: 2056-5968
Titre abrégé: Cell Discov
Pays: England
ID NLM: 101661034
Informations de publication
Date de publication:
2020
2020
Historique:
received:
12
05
2019
accepted:
16
12
2019
entrez:
7
2
2020
pubmed:
7
2
2020
medline:
7
2
2020
Statut:
epublish
Résumé
Zika virus (ZIKV) infection poses a serious threat to human health. However, no licensed vaccine or therapeutic drug is currently available for ZIKV. We have previously shown that recombinant ZIKV E80 protein induced potent neutralizing antibody response and protected mice from lethal viral challenge. In the present study, we isolated five ZIKV neutralizing monoclonal antibodies (mAbs) from E80-immunized mice. These five mAbs specifically bound and neutralized Asian-lineage ZIKV strains. Epitope mapping revealed that all of the five mAbs recognized a novel linear epitope located on the glycan loop of E protein domain I. Sequence alignment revealed that the epitope was extremely conserved in ZIKV but highly variable between ZIKV and other flaviviruses. Thus, these five mAbs form a new class of anti-ZIKV antibodies exhibiting broad-spectrum neutralization on Asian-lineage ZIKV. A representative of this mAb class, 5F8, was found to exert inhibitory function in vitro primarily at the early stage of the post-attachment viral entry process. Importantly, mAb 5F8 was able to confer full protection in a mouse model of ZIKV lethal infection. Our results have strong implications for developing anti-ZIKV vaccines and therapeutic mAbs.
Identifiants
pubmed: 32025335
doi: 10.1038/s41421-019-0140-8
pii: 140
pmc: PMC6997156
doi:
Types de publication
Journal Article
Langues
eng
Pagination
5Informations de copyright
© The Author(s) 2020.
Déclaration de conflit d'intérêts
Conflict of interestThe authors declare that they have no conflict of interest.
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