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High immune efficacy against different avian influenza H5N1 viruses due to oral administration of a Saccharomyces cerevisiae-based vaccine in chickens.
- Source :
-
Scientific reports [Sci Rep] 2021 Apr 26; Vol. 11 (1), pp. 8977. Date of Electronic Publication: 2021 Apr 26. - Publication Year :
- 2021
-
Abstract
- A safe and effective vaccine is the best way to control large-scale highly pathogenic avian influenza virus (HPAI) A (H5N1) outbreaks. Saccharomyces cerevisiae (S. cerevisiae) is an ideal mucosal delivery vector for vaccine development, and we have previously shown that conventional administration of a S. cerevisiae-based vaccine (EBY100/pYD1-HA) via injection led to protection against the homologous H5N1 virus in a mouse model. Because the diameter of S. cerevisiae is approximately 10 μm, which results in a severe inflammation by injection route, therefore, oral administration is a more suitable approach for EBY100/pYD1-HA conferring protection in poultry. We extended our work by evaluating the immunogenicity and protective efficacy of oral vaccination with EBY100/pYD1-HA in the chicken model. Oral immunization with EBY100/pYD1-HA could induce robust serum IgG, mucosal IgA and cellular immune responses. Importantly, EBY100/pYD1-HA provided protection against challenges with a homologous and a heterologous H5N1 viruses. These findings suggest that EBY100/pYD1-HA, a promising H5N1 oral vaccine candidate, can avoid potential reassortment of other avian influenza viruses in oral administration of live virus vaccines and overcome the limitations of conventional injection routes. Importantly, this platform will be able to provide opportunities for broader applications in poultry during HPAI A (H5N1) outbreaks.
- Subjects :
- Administration, Oral
Animals
Antibodies, Viral immunology
Chickens virology
Immunity, Mucosal drug effects
Immunoglobulin A immunology
Immunoglobulin G immunology
Influenza A Virus, H5N1 Subtype genetics
Influenza Vaccines genetics
Influenza Vaccines immunology
Influenza in Birds immunology
Poultry Diseases immunology
Chickens immunology
Influenza A Virus, H5N1 Subtype immunology
Influenza Vaccines pharmacology
Influenza in Birds prevention & control
Poultry Diseases prevention & control
Saccharomyces cerevisiae genetics
Saccharomyces cerevisiae immunology
Subjects
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 11
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 33903693
- Full Text :
- https://doi.org/10.1038/s41598-021-88413-2