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- W2123050578 abstract "Foot-and-mouth disease (FMD) is a highly contagious viral disease of cloven-hoofed ungulates that can lead to severe losses in the livestock production and export industries. Although vaccines have been extensively used to control FMD, there is no antiviral therapy available to treat ongoing infections with FMD virus (FMDV). Six peptide-conjugated morpholino oligomers (PPMOs) with sequences complementary to various 21-nucleotide segments of the 5' and 3' untranslated regions (UTRs) of the FMDV genome (strain A(24) Cruzeiro/Brazil/1955 [A(24)Cru]) were evaluated in cell cultures. Three of the PPMOs, targeting domain 5 of the internal ribosome entry site (5D PPMO), and the two translation start codon regions (AUG1 and AUG2 PPMOs), showed high levels of anti-FMDV activity. A dose-dependent and sequence-specific reduction in viral titers of greater than 5 log(10), with a concomitant reduction of viral protein and RNA expression, was achieved at low micromolar concentrations. Under identical conditions, three other PPMOs targeting the 5'-terminal region of the genome, the cis-acting replication element in the 5' UTR, and the 3' ab stem-loop showed less dramatic titer reductions of 1.5 log(10) to 2 log(10). Treatment with 5D PPMO reduced the titers of FMDV strains representing five different serotypes by 2 log(10) to 4 log(10) compared to those of the controls. A(24)Cru-infected BHK-21 cells treated repeatedly with 5D or AUG2 PPMO generated resistant viruses for which phenotypic and genotypic properties were defined. Notably, three passages with low concentrations of the AUG1 PPMO extinguished all traces of detectable virus. The results indicate that PPMOs have potential for treating FMDV infections and that they also represent useful tools for studying picornaviral translation and evolution." @default.
- W2123050578 created "2016-06-24" @default.
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- W2123050578 date "2007-11-01" @default.
- W2123050578 modified "2023-09-26" @default.
- W2123050578 title "Inhibition of Foot-and-Mouth Disease Virus Infections in Cell Cultures with Antisense Morpholino Oligomers" @default.
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- W2123050578 doi "https://doi.org/10.1128/jvi.00557-07" @default.
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