کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6141751 1227286 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The region between the two polyprotein initiation codons of foot-and-mouth disease virus is critical for virulence in cattle
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
The region between the two polyprotein initiation codons of foot-and-mouth disease virus is critical for virulence in cattle
چکیده انگلیسی
To explore the role in viral pathogenesis of the region located between the two functional AUG (inter-AUG) in foot-and-mouth disease virus (FMDV), we derived viruses containing transposon (tn) inserts from a mutagenized cDNA infectious clone of FMDV (pA24-WT). Mutant viruses containing an in-frame 57-nt transposon insertion grew at a slower rate and had a smaller plaque size phenotype than the parental virus (A24-WT). A mutant virus containing a 51-nt deletion in inter-AUG had a similar phenotype in cell culture to that of A24-WT. When tested by aerosol inoculation in cattle (3 animals per virus), the deletion mutant was fully virulent as was A24-WT. Mutant viruses containing insertions in inter-AUG did not cause clinical disease or viremia. However, viruses that partially or totally removed the tn insertion during animal infection reverted to virulence in 2 inoculated steers. Therefore, this study identified inter-AUG as an FMDV viral virulence determinant in cattle infected by aerosol route.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Virology - Volume 396, Issue 1, 5 January 2010, Pages 152-159
نویسندگان
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