Further evidence for the association of distinct amino acid residues with in vitro and in vivo growth of infectious bursal disease virus

Further evidence for the association of distinct amino acid residues with in vitro and in vivo... A cell-culture-adapted reverse genetics strain of very virulent infectious bursal disease virus (IBDV) of chickens, designated as BD-3tcC, having four amino acid substitutions (Gln253His, Asp279Asn, Ala284Thr and Ser330Arg) in the capsid protein VP2 was tested for its genetic stability during serial passage in chickens and chicken embryo fibroblast (CEF) cell culture. Results of in vitro and in vivo experiments demonstrated that all four introduced mutations in BD-3tcC remained stable during serial passage in CEF cell culture, but during passage in chickens, amino acid residues at position 253 and 284 reverted from histidine to glutamine and threonine to alanine, respectively. In a parallel experiment, the same substitutions also occurred in a conventionally attenuated vaccine strain D-78 on serial passage in chickens. However, no reversion or substitution took place at positions 279 and 330 during in vivo passage of the mutant virus BD-3tcC or vaccine virus D-78. The findings provide conclusive evidence that while IBDV requires histidine and threonine at positions 253 and 284 for cell culture adaptation, glutamine and alanine at these positions are selected preferentially during in vivo replication. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Further evidence for the association of distinct amino acid residues with in vitro and in vivo growth of infectious bursal disease virus

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Springer Vienna
Copyright © 2014 by Springer-Verlag Wien
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
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  • Investigation of the antigenic evolution of field isolates using the reverse genetics system of infectious bursal disease virus (IBDV)
    Durairaj, V; Sellers, HS; Linnemann, EG; Icard, AH; Mundt, E

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