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Genomic variation in macrophage-cultured European porcine reproductive and respiratory syndrome virus Olot/91 revealed using ultra-deep next generation sequencing
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  • 作者:Zen H Lu (15)
    Alexander Brown (15)
    Alison D Wilson (15)
    Jay G Calvert (16)
    Monica Balasch (17)
    Pablo Fuentes-Utrilla (18)
    Julia Loecherbach (18)
    Frances Turner (18)
    Richard Talbot (18)
    Alan L Archibald (15)
    Tahar Ait-Ali (15)
  • 关键词:PRRSV ; Microevolution ; Variant spectra ; Ultra ; deep next generation sequencing
  • 刊名:Virology Journal
  • 出版年:2014
  • 出版时间:December 2014
  • 年:2014
  • 卷:11
  • 期:1
  • 全文大小:277 KB
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  • 作者单位:Zen H Lu (15)
    Alexander Brown (15)
    Alison D Wilson (15)
    Jay G Calvert (16)
    Monica Balasch (17)
    Pablo Fuentes-Utrilla (18)
    Julia Loecherbach (18)
    Frances Turner (18)
    Richard Talbot (18)
    Alan L Archibald (15)
    Tahar Ait-Ali (15)

    15. The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
    16. Zoetis Inc.,Global Biologics Research, 333 Portage St, Kalamazoo, MI, 49007, USA
    17. VMRD Olot Zoetis, Ctra. EU Regional Vaccines Group, Camprodon s/n Finca 鈥淟a Riba鈥? 17813 Vall de Bianya, Girona, Spain
    18. Edinburgh Genomics, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
  • ISSN:1743-422X
文摘
Background Porcine Reproductive and Respiratory Syndrome (PRRS) is a disease of major economic impact worldwide. The etiologic agent of this disease is the PRRS virus (PRRSV). Increasing evidence suggest that microevolution within a coexisting quasispecies population can give rise to high sequence heterogeneity in PRRSV. Findings We developed a pipeline based on the ultra-deep next generation sequencing approach to first construct the complete genome of a European PRRSV, strain Olot/9, cultured on macrophages and then capture the rare variants representative of the mixed quasispecies population. Olot/91 differs from the reference Lelystad strain by about 5% and a total of 88 variants, with frequencies as low as 1%, were detected in the mixed population. These variants included 16 non-synonymous variants concentrated in the genes encoding structural and nonstructural proteins; including Glycoprotein 2a and 5. Conclusion Using an ultra-deep sequencing methodology, the complete genome of Olot/91 was constructed without any prior knowledge of the sequence. Rare variants that constitute minor fractions of the heterogeneous PRRSV population could successfully be detected to allow further exploration of microevolutionary events.

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