Genetic and antigenic characterization of two diarrhoeicdominant rotavirus A genotypes G3P[12] and G14P[12] circulating in the global equine population.
Abstract: Equine rotavirus species A (ERVA) G3P[12] and G14P[12] are two dominant genotypes that cause foal diarrhoea with a significant economic impact on the global equine industry. ERVA can also serve as a source of novel (equine-like) rotavirus species A (RVA) reassortants with zoonotic potential as those identified previously in 2013-2019 when equine G3-like RVA was responsible for worldwide outbreaks of severe gastroenteritis and hospitalizations in children. One hurdle to ERVA research is that the standard cell culture system optimized for human rotavirus replication is not efficient for isolating ERVA. Here, using an engineered cell line defective in antiviral innate immunity, we showed that both equine G3P[12] and G14P[12] strains can be rapidly isolated from diarrhoeic foals. The genome sequence analysis revealed that both G3P[12] and G14P[12] strains share the identical genotypic constellation except for VP7 and VP6 segments in which G3P[12] possessed VP7 of genotype G3 and VP6 of genotype I6 and G14P[12] had the combination of VP7 of genotype G14 and VP6 of genotype I2. Further characterization demonstrated that two ERVA genotypes have a limited cross-neutralization. The lack of an broad cross-protection between both genotypes supported the increased recent diarrhoea outbreaks due to equine G14P[12] in foals born to dams immunized with the inactivated monovalent equine G3P[12] vaccine. Finally, using the structural modelling approach, we provided the genetic basis of the antigenic divergence between ERVA G3P[12] and G14P[12] strains. The results of this study will provide a framework for further investigation of infection biology, pathogenesis and cross-protection of equine rotaviruses.
Publication Date: 2024-08-20 PubMed ID: 39163114PubMed Central: PMC11335307DOI: 10.1099/jgv.0.002016Google Scholar: Lookup
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APA
Uprety T, Soni S, Sreenivasan C, Hause BM, Naveed A, Ni S, Graves AJ, Morrow JK, Meade N, Mellits KH, Adam E, Kennedy MA, Wang D, Li F.
(2024).
Genetic and antigenic characterization of two diarrhoeicdominant rotavirus A genotypes G3P[12] and G14P[12] circulating in the global equine population.
J Gen Virol, 105(8), 002016.
https://doi.org/10.1099/jgv.0.002016 Publication
Researcher Affiliations
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Veterinary and Biomedical Sciences, Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings, South Dakota, 57007, USA.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA.
- Equine Diagnostic Solutions, LLC, 1501 Bull Lea Rd, Suite 104, Lexington, Kentucky 40511, USA.
- Equine Diagnostic Solutions, LLC, 1501 Bull Lea Rd, Suite 104, Lexington, Kentucky 40511, USA.
- Division of Microbiology, Brewing, and Biotechnology, School of Biosciences, University of Nottingham, Sutton Bonington, UK.
- Division of Microbiology, Brewing, and Biotechnology, School of Biosciences, University of Nottingham, Sutton Bonington, UK.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Veterinary and Biomedical Sciences, Animal Disease Research and Diagnostic Laboratory, South Dakota State University, Brookings, South Dakota, 57007, USA.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
- Department of Veterinary Science, Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, Kentucky 40546, USA.
MeSH Terms
- Animals
- Horses
- Rotavirus / genetics
- Rotavirus / immunology
- Rotavirus / isolation & purification
- Rotavirus / classification
- Rotavirus Infections / veterinary
- Rotavirus Infections / virology
- Rotavirus Infections / immunology
- Genotype
- Horse Diseases / virology
- Horse Diseases / immunology
- Diarrhea / virology
- Diarrhea / veterinary
- Antigens, Viral / genetics
- Antigens, Viral / immunology
- Genome, Viral / genetics
- Phylogeny
- Cell Line
Conflict of Interest Statement
The authors have read the journal’s policy and have the following conflicts: Ben Hause is currently employed by Cambridge Technologies, a company that produces animal vaccines, and this project was in part supported by Zoetis Animal Health that produces animal products including vaccines. Amy J. Graves, and Jennifer K. Morrow are employed by Equine Diagnostic Solutions, LLC, a company that offers diagnostic solutions for Equine diseases. This does not alter the authors adherence to all the ASM Journal policies on sharing data and materials.
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