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?:abstract
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The recurrent zoonotic spillover of coronaviruses (CoVs) into the human population underscores the need for broadly active countermeasures. Here, we employed a directed evolution approach to engineer three SARS-CoV-2 antibodies for enhanced neutralization breadth and potency. One of the affinity-matured variants, ADG-2, displays strong binding activity to a large panel of sarbecovirus receptor binding domains (RBDs) and neutralizes representative epidemic sarbecoviruses with remarkable potency. Structural and biochemical studies demonstrate that ADG-2 employs a unique angle of approach to recognize a highly conserved epitope overlapping the receptor binding site. In murine models of SARS-CoV and SARS-CoV-2 infection, passive transfer of ADG-2 provided complete protection against respiratory burden, viral replication in the lungs, and lung pathology. Altogether, ADG-2 represents a promising broad-spectrum therapeutic candidate for the treatment and prevention of SARS-CoV-2 and future emerging SARS-like CoVs.
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?:creator
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?:doi
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10.1101/2020.11.17.385500
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?:doi
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?:journal
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?:license
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?:pdf_json_files
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document_parses/pdf_json/3e843fc5ffd270dc5de3e2864620d83929cac3e9.json; document_parses/pdf_json/1b449544ce790762207eecf120a44f9c54b286bb.json
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?:pmc_json_files
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document_parses/pmc_json/PMC7685319.xml.json
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?:pmcid
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?:pmid
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?:pmid
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?:publication_isRelatedTo_Disease
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?:sha_id
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?:source
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BioRxiv; Medline; PMC; WHO
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?:title
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An Engineered Antibody with Broad Protective Efficacy in Murine Models of SARS and COVID-19
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?:type
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?:year
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