Abstract
Canine morbillivirus is a highly contagious multi-host pathogen with high morbidity and mortality. Timely diagnosis is of utmost importance to effectively control such a dreadful disease. Monoclonal antibodies (mAbs) serve as a high throughput diagnostics and applied tools for research and development (R&D). In the present study, a total of six mouse monoclonal antibodies were developed. All the mAbs generated belonged to IgG class. Of the six mAbs, two of them, namely CD-2F8 and CD-3D8 were directed against the nucleocapsid protein of CDV as determined in western blotting. The reactivity of all the mAbs was checked in indirect-ELISA and cell-ELISA using different morbilliviruses. The mAbs could broadly be categorized as; CDV specific (CD-3D8 and CD-2F8), cross-reactive to PPR virus (CD-AB3 and CD-4D6) and cross-reactive to both PPR virus and measles virus (CD-5D10 and CD-6E5). The characterized mAbs were used for antigenic profiling of CDV, PPR virus and measles virus. Based on the reactivity pattern; a close antigenic relationship was found among CDV and PPR virus as compared to measles virus. A pair of CDV specific mAbs namely CD-2F8 and CD-3D8 were identified which did not cross-react with measles and PPR viruses and thus could be used for diagnostic applications.
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