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  • Title: Development and characterization of a recombinant chicken single-chain Fv antibody detecting Eimeria acervulina sporozoite antigen.
    Author: Park KJ, Park DW, Kim CH, Han BK, Park TS, Han JY, Lillehoj HS, Kim JK.
    Journal: Biotechnol Lett; 2005 Mar; 27(5):289-95. PubMed ID: 15834788.
    Abstract:
    Chicken monoclonal antibody (mAb), 8C3, which is reactive with a sporozoite antigen of Eimeria acervulina, is a potential therapeutic agent against avian coccidiosis caused by Eimeria spp. However, production of large amounts of 8C3 mAb in cell culture system is labor intensive and not cost-effective. Accordingly, recombinant single chain variable fragment (ScFv) antibody was constructed by amplification of the V(H) and V(L) genes from chicken hybridoma, 8C3 and when expressed in E. coli gave 5 mg l(-1). The expressed protein showed antigen binding activity equivalent to that of the parental mAb. In addition, nucleotide sequence comparison of 8C3 gene to the germline chicken V(L) genes suggested that the gene conversion with (V)lambda pseudogenes might contribute to the diversification of V(L) genes in chickens.
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