Monoclonal antibody against Fasciola gigantica glutathione peroxidase and their immunodiagnosis potential for fasciolosis

Publication date: Available online 12 November 2019Source: Veterinary ParasitologyAuthor(s): Pornanan Kueakhai, Kulathida Chaithirayanon, Athit Chaiwichien, Tepparit Samrit, Supawadee Osotprasit, Phawiya Suksomboon, Wipaphorn Jaikua, Prasert Sobhon, Narin ChangklungmoaAbstractGlutathione peroxidases (GPx), major antioxidant enzymes, secreted by Fasciola spp., are important for the parasite evasion and protection against the host’s immune responses. In the present study, a monoclonal antibody (MoAb) against recombinant F. gigantica glutathione peroxidase (rFgGPx) was produced by hybridoma technique using spleen cells from BALB/c mice immunized with rFgGPx. This MoAb (named 7B8) is IgG1 with κ light chains, and it reacted specifically with rFgGPx at a molecular weight 19 kDa as shown by immunoblotting, and reacted with the native FgGPx in the extracts of whole body (WB), metacercariae, newly excysted juveniles (NEJs), 4 week-old juveniles and adult F. gigantica as shown by indirect ELISA. It did not cross react with antigens in WB fractions from other adult trematodes, including Fischoederius cobboldi, Paramphistomum cervi, Setaria labiato-papillosa, Eurytrema pancreaticum, Gastrothylax crumenifer and Gigantocotyle explanatum. By immunolocalization, MoAb against rFgGPx reacted with the native protein in the tegument, vitelline cells, and eggs of adult F. gigantica. In addition, the sera from mice experimentally infected with F. gigantica were tested positive ...
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research

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