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  • Title: A spike-specific whole-porcine antibody isolated from a porcine B cell that neutralizes both genogroup 1 and 2 PEDV strains.
    Author: Fu F, Li L, Shan L, Yang B, Shi H, Zhang J, Wang H, Feng L, Liu P.
    Journal: Vet Microbiol; 2017 Jun; 205():99-105. PubMed ID: 28622871.
    Abstract:
    Porcine epidemic diarrhea (PED), caused by an alpha coronavirus, is a highly contagious disease and causes high morbidity and mortality in suckling piglets. Isolating PEDV neutralizing antibodies from porcine B cells is critical to elucidate the development of PEDV neutralizing antibodies and the protective mechanism of PEDV infection. Here, we described the isolation of a PEDV-neutralizing antibody from the B cell of a vaccinated pig. The antibody, named PC10, was demonstrated to target the conformational epitope of PEDV spike protein, specifically bind to the infected cells of PEDV genogroup 1 and 2 strains, and potently neutralize PEDV infection. PC10 neutralized PEDV infection through interfering with the viral life stages after cellular attachment instead of blocking the attachment of PEDV to cells. These results suggest that PC10 could be a promising candidate for passive protection and inform PEDV vaccine design because of its specificity and substantial neutralization potency.
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