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  • Title: Expression of Clostridium perfringens epsilon-beta fusion toxin gene in E. coli and its immunologic studies in mouse.
    Author: Pilehchian Langroudi R, Shamsara M, Aghaiypour K.
    Journal: Vaccine; 2013 Jul 11; 31(32):3295-9. PubMed ID: 23707696.
    Abstract:
    Clostridium perfringens is an anaerobic spore-forming, pathogenic bacterium that is responsible for severe diseases in humans and livestock. In the present study, an epsilon-beta fusion toxin was expressed as a soluble protein in E. coli and the recombinant cell lysate was used for immunization studies in mouse. Potency of the toxin (as an antigen) induced 6 and 10IU/ml of epsilon and beta anti-toxin in rabbit, respectively. These titers were higher than the minimum level required by the European Pharmacopoeia for epsilon and beta toxins. Experimental challenge with the recombinant fusion toxoid revealed that it could protect mice against C. perfringens epsilon and beta toxins. Toxicity of the fusion toxin was studied by histopathological findings, which were the same as the native toxins. In conclusion, E. coli is a suitable expression host for immunogenic epsilon-beta fusion toxin of C. perfringens.
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