Recombinant AAV vaccine expressing PEDV S1 enhances immunity with superior neonatal protection.

ABSTRACT: To address suboptimal antibody induction by commercial PEDV vaccines, we constructed a recombinant adeno-associated virus (rAAV-CMV-PEDV S1) expressing regions of the PEDV S1 subunit based on Adeno-associated virus serotype 2 (AAV-2) vector. In mice, rAAV-CMV-PEDV S1 induced significantly more remarkable and persistent serum-specific IgG compared with the inactivated vaccine and accompanied by robust CD3⁺CD8⁺ T cells activation within 4 weeks post-immunization. In pregnant sows, compared with commercially available inactivated and attenuated vaccines, the rAAV-CMV-PEDV S1 induced significantly higher serum and colostral IgG as well as neutralizing antibody titers, which provided piglets with abundant maternal antibodies. Crucially, challenge experiments demonstrated t

SUBMITTER: Pang M 

PROVIDER: S-EPMC12592396 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature