期刊
VACCINES
卷 11, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/vaccines11010186
关键词
crucian carp; CyHV-2; yeast surface display; oral vaccination; ORF132
This study evaluated the protective efficacy of oral administration of surface-displayed ORF132 against CyHV-2 infection. The results showed that oral vaccination evoked strong immune responses and provided significant protection for crucian carp, resulting in a relative percent survival of 64%.
Cyprinid herpesvirus 2 (CyHV-2) is the etiological agent of herpesviral hematopoietic necrosis (HVHN) disease, which causes serious economic losses in the crucian carp culture industry. In this study, by displaying ORF132 on the surface of Saccharomyces cerevisiae cells (named EBY100/pYD1-ORF132), we evaluated the protective efficacy of oral administration against CyHV-2 infection. Intense innate and adaptive immune responses were evoked in both mucosal and systemic tissues after oral vaccination with EBY100/pYD1-ORF132. Importantly, oral vaccination provided significant protection for crucian carp post CyHV-2 infection, resulting in a relative percent survival (RPS) of 64%. In addition, oral administration suppressed the virus load and relieved histological damage in selected tissues. Our results indicated that surface-displayed ORF132 on S. cerevisiae could be used as potential oral vaccine against CyHV-2 infection.
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