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. 2021 Mar 19:545:33-39.
doi: 10.1016/j.bbrc.2021.01.075. Epub 2021 Jan 31.

Neutralization of Zika virus by E protein domain III-Specific human monoclonal antibody

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Free article

Neutralization of Zika virus by E protein domain III-Specific human monoclonal antibody

Sang Il Kim et al. Biochem Biophys Res Commun. .
Free article

Abstract

Zika virus (ZIKV) infection in both infants and adults is associated with neurological complications including, but not limited to, microcephaly and Guillain-Barre syndrome. Antibody therapy can be effective against virus infection. We isolated ZIKV envelope domain III-specific neutralizing antibodies (nAbs) from two convalescent patients with ZIKV infection. One antibody, 2F-8, exhibited potent in vitro neutralizing activity against Asian and American strains of ZIKV. To prevent FcγR-mediated antibody-dependent enhancement, we prepared IgG1 with LALA variation. A single dose of 2F-8 in the context of IgG1 or IgG1-LALA prior to or post lethal ZIKV challenge conferred complete protection in mice.

Keywords: Antibody-dependent enhancement; Guillain-Barre syndrome; Microcephaly; Neutralizing antibody; Zika virus.

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Conflict of interest statement

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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