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  • Title: Mouse monoclonal antibodies against human urinary protein Sm-UP(2)IP of Schistosoma mansoni.
    Author: Boamah D, Ayi I, Yankson K, Bosompem KM.
    Journal: Hybridoma (Larchmt); 2012 Jun; 31(3):188-95. PubMed ID: 22741583.
    Abstract:
    There are innumerable clinical and pathological problems associated with schistosomiasis that have necessitated various control programs. Successful control would naturally depend on effective rapid diagnosis in the field. However, the overlapping distribution of urinary and intestinal schistosomiasis in hyperendemic areas calls for differential diagnosis. This study was aimed at producing anti-Schistosoma mansoni monoclonal antibodies (MAbs) for possible utilization in assays to detect antigens in the urine of infected persons. In order to raise antibodies to less immunogenic urinary parasite antigens, BALB/c mice were immunized with Schistosoma mansoni soluble worm antigens (Sm-SWA) while urinary proteins (Sm-UP(2)IP), isolated from infected human urine samples, was used as a final booster before cell fusion. Hybridoma cells were obtained by the fusion of mouse myeloma and spleen cells from the immunized mice, which were screened by microplate ELISA and then studied further to obtain anti-S. mansoni specific MAbs. The MAbs analyzed presented IgM isotypes. The reactivity of anti-S. mansoni MAbs with Sm-UP(2)IP, 13/43 (30.2%), MAbs showed stronger reactivity. It was observed that one of the MAbs cross-reacted with antigen associated with S. haematobium urinary antigen (Sh-UP(2)IP). Nine (9/13, 69.2%) MAbs recognized glycoprotein antigenic epitopes of Sm-UP(2)IP and Sm-SWA. On the other hand, 4/13 (30.8%) MAbs recognized carbohydrate antigenic epitopes. Band size of 8.9 kDa associated with Sm-UP(2)IP was detected by the 13 MAbs. With Sm-SWA, all the MAbs detected band sizes of 177.8 and 158.5 kDa. In addition, three MAbs recognized a 38.9 kDa band. The generation of anti-S. mansoni species-specific MAbs offers opportunities to develop a specific MAb-based diagnostic tool for use in the field to detect Schistosoma mansoni infection in Ghana.
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