| 摘要 |
The invention described herein provides a method for screening pathogenic viral envelope proteins and protein complexes to identify protein constructs with enhanced effectiveness as vaccine immunogens. The method is carried out by (i) expressing of a membrane-bound isotype of an antibody that has the same binding activity and specificity of an antibody that is known, or identified, to bind and neutralize the targeted virus, and that has the capacity to activate signaling pathways down-stream of B cell receptor ligand binding and activation-a modified neutralizing antibody-based B cell receptor; (ii) exposing the cell to antigen; and (iii) assay for signaling downstream of B cell receptor activation. The present invention also provides the antigens identified using the as say described herein, and neutralizing antibodies derived by immunization with the antigens identified using the assay described herein.
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