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Generation and evaluation of a recombinant goose origin Newcastle disease virus expressing Cap protein of goose origin avastrovirus as a bivalent vaccine in goslings
- Source :
- Poultry science. 98(10)
- Publication Year :
- 2019
-
Abstract
- Currently, both goose astrovirus (GoAstV) and goose-origin Newcastle disease virus (NDV) are widely infectious agents for goslings. There is no vaccine for GoAstV. Capsid protein can elicit a neutralizing antibody in human astroviruses (HAstV). Molecular analysis of the genomic region encoding the capsid protein(ORF2) of goose astrovirus has revealed that it contains neutralizing epitopes. Goose-origin NDV is also an infectious agent. A wide range of NDV strains exist that can be commonly used as vaccine vectors. In the present study, the fusion protein cleavage site RRQKR↓F in a backbone of the virulent goose-origin NDV SH-12 was changed into an avirulent motif GRQGR↓L. The modified goose-origin NDV recombinant vaccine virus expressing the Capsid protein (Cap) of GoAstV was generated as a bivalent vaccine using a reverse-genetics approach. The recombinant virus, rNDV/GoAstV-Cap, was attenuated and similar growth dynamics, cytopathic effects, and virus titers in vitro were maintained when compared to the LaSota strain. Expression of the GoAstV-Cap protein in rNDV/GoAstV-Cap infected cells was detected by an immunofluorescence assay and Western blotting. Goslings inoculated with rNDV/GoAstV-Cap showed no apparent signs of disease and induced GoAstV-Cap-specific immune responses and NDV-specific serum antibody responses to a LaSota vaccination control. Complete protection against a pathogenic GoAstV challenge and avelogenic NDV challenge was conferred. The results of the study suggested that rNDV/GoAstV-Cap viruses have the potential to be the safe, stable, and effective bivalent vaccines.
- Subjects :
- viruses
Newcastle Disease
Newcastle disease virus
Recombinant virus
Newcastle disease
Virus
03 medical and health sciences
Goose
biology.animal
Geese
Animals
Neutralizing antibody
Poultry Diseases
030304 developmental biology
0303 health sciences
biology
0402 animal and dairy science
Viral Vaccines
04 agricultural and veterinary sciences
General Medicine
biology.organism_classification
040201 dairy & animal science
Virology
Avastrovirus
Vaccination
Titer
Capsid
biology.protein
Animal Science and Zoology
Capsid Proteins
Subjects
Details
- ISSN :
- 15253171
- Volume :
- 98
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Poultry science
- Accession number :
- edsair.doi.dedup.....b8d520d1da45c795efc3aad5b756dcaf