Abstract
African swine fever (ASF) is a highly contagious disease caused by the African swine fever virus (ASFV) infecting pigs, which has caused huge economic losses in countries around the world. Currently, there is no effective vaccine, and the prevention and control of ASF is mainly through rapid detection, so it is particularly important to carry identify and develop rapid detection methods for ASFV. In this study, recombinant plasmid PET-28a(+)-p30 was constructed, and the recombinant protein was obtained by inducing expression and Ni+ resin affinity column purification. Mice were immunized with recombinant p30 protein, and after three immunizations, ten strains of hybridoma cells that stably secreted monoclonal antibodies (mAbs) against p30 protein were obtained by cell fusion and subcloning. A colloidal gold immunochromatography assay (GICA) based on double antibody sandwich technology was established to screen the paired antibodies, and the trapping and detecting antibodies were mAb-11F11 and mAb-7A8, respectively, with a detection limit of 1 ng/mL, which laid an important material foundation for the early detection of ASF in the future.
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