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Genome Sequences of Antigenically Distinct Serotype O Foot-and-Mouth Disease Viruses from Pakistan.

ABSTRACT: The genome sequences of three serotype O foot-and-mouth disease viruses (FMDVs) isolated from outbreaks in Pakistan in 2016 and 2017 are described. Despite all three isolates being classified in the same FMDV genetic sublineage, two of them displayed a distinct antigenic phenotype against commonly used vaccine strains.

SUBMITTER: Bachanek-Bankowska K

PROVIDER: S-EPMC6346158 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Genome Sequences of Antigenically Distinct Serotype O Foot-and-Mouth Disease Viruses from Pakistan.

Bachanek-Bankowska Katarzyna K Wadsworth Jemma J Henry Elisabeth E Ludi Anna B AB Bin-Tarif Abdelghani A Statham Bob B King Donald P DP Afzal Muhammad M Hussain Manzoor M Manzoor Shumaila S Abubakar Muhammad M Knowles Nick J NJ

Microbiology resource announcements 20190117 3

The genome sequences of three serotype O foot-and-mouth disease viruses (FMDVs) isolated from outbreaks in Pakistan in 2016 and 2017 are described. Despite all three isolates being classified in the same FMDV genetic sublineage, two of them displayed a distinct antigenic phenotype against commonly used vaccine strains. ...[more]

PMID: 30687826

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Project description:BACKGROUND: Foot-and-mouth disease (FMD) is endemic in East Africa with the majority of the reported outbreaks attributed to serotype O virus. In this study, phylogenetic analyses of the polyprotein coding region of serotype O FMD viruses from Kenya and Uganda has been undertaken to infer evolutionary relationships and processes responsible for the generation and maintenance of diversity within this serotype. FMD virus RNA was obtained from six samples following virus isolation in cell culture and in one case by direct extraction from an oropharyngeal sample. Following RT-PCR, the single long open reading frame, encoding the polyprotein, was sequenced. RESULTS: Phylogenetic comparisons of the VP1 coding region showed that the recent East African viruses belong to one lineage within the EA-2 topotype while an older Kenyan strain, K/52/1992 is a representative of the topotype EA-1. Evolutionary relationships between the coding regions for the leader protease (L), the capsid region and almost the entire coding region are monophyletic except for the K/52/1992 which is distinct. Furthermore, phylogenetic relationships for the P2 and P3 regions suggest that the K/52/1992 is a probable recombinant between serotypes A and O. A bootscan analysis of K/52/1992 with East African FMD serotype A viruses (A21/KEN/1964 and A23/KEN/1965) and serotype O viral isolate (K/117/1999) revealed that the P2 region is probably derived from a serotype A strain while the P3 region appears to be a mosaic derived from both serotypes A and O. CONCLUSIONS: Sequences of the VP1 coding region from recent serotype O FMDVs from Kenya and Uganda are all representatives of a specific East African lineage (topotype EA-2), a probable indication that hardly any FMD introductions of this serotype have occurred from outside the region in the recent past. Furthermore, evidence for interserotypic recombination, within the non-structural protein coding regions, between FMDVs of serotypes A and O has been obtained. In addition to characterization using the VP1 coding region, analyses involving the non-structural protein coding regions should be performed in order to identify evolutionary processes shaping FMD viral populations.

Dataset Information

Genome Sequences of Antigenically Distinct Serotype O Foot-and-Mouth Disease Viruses from Pakistan.

Publications

Genome Sequences of Antigenically Distinct Serotype O Foot-and-Mouth Disease Viruses from Pakistan.

Similar Datasets

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