Abstract
Coxsackievirus A2 (CVA2) is associated with multiple diseases in children. Currently, there is limited research on immunological detection methods for CVA2. Herein, the VP1 gene of CVA2 strain 201711, belonging to cluster 2 within genotype D, was analyzed. The structures of VP1 from CVA2 strains 201711, 7-1 and 12-1, enterovirus A71 (EV-A71) strain 201713, coxsackievirus A16 (CVA16) strain 201717, and coxsackievirus A6 (CVA6) strain JLS10 were compared. The Escherichia coli BL21(DE3)/pET vector system was employed to express the recombinant protein containing the entire VP1 of CVA2 strain 201711. Mice were immunized with the purified protein, and the sera were collected and used to specifically idendify the VP1 in CVA2-infected RD cells by Western blot and immunofluorescence assay. There was no evident cross-reactivity of the sera with the VP1 of EV-A71, CVA16, and CVA6 strains mentioned above. Therefore, this study provided mouse-specific anti-CVA2 VP1 polyclonal antibodies for CVA2 detection.
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