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Immunogenic and neutralization efficacy of recombinant perfringolysin O of Clostridium perfringens and its C-terminal receptor-binding domain in a murine model
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Immunogenic and neutralization efficacy of recombinant perfringolysin O of Clostridium perfringens and its C-terminal receptor-binding domain in a murine model
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Immunogenic and neutralization efficacy of recombinant perfringolysin O of Clostridium perfringens and its C-terminal receptor-binding domain in a murine model
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Journal Article
Immunogenic and neutralization efficacy of recombinant perfringolysin O of Clostridium perfringens and its C-terminal receptor-binding domain in a murine model
2022
Overview
Clostridium perfringens is a Gram-positive anaerobe ubiquitously present in different environments, including the gut of humans and animals. C. perfringens have been classified in the seven toxinotypes based on the secreted toxins that cause different diseases in humans and animals. Perfringolysin O (PFO), a cholesterol-dependent pore-forming cytolysin, is one of the potent toxins secreted by almost all C. perfringens isolates. The PFO acts in synergy with α-toxin in the progression of gas gangrene in humans and necrohemorrhagic enteritis in the calves.C. perfringens infections spread very fast, and the animals die within a few hours of the onset of infection. This necessitates the use of vaccines to control clostridial infections. Though the vaccine potential of other toxins has been reported, PFO has remained unexplored. The present study describes the immunogenic and protective potential of native recombinant PFO (WTrPFO). Since the PFO is toxic to the host cells, the non-toxic C-terminal domain of PFO (rPFOC-ter) was also assessed for its immunogenicity and protective efficacy. Immunization of mice with the purified soluble recombinant histidine-tagged WTrPFO and rPFOC-ter, expressed in E. coli, generated robust mixed immune response and T cell memory. Pre-incubation of the WTrPFO with anti-WTrPFO and rPFOC-ter antisera negated its hemolytic activity in mice RBCs, as well as its cytotoxic effect in mice peritoneal macrophages in vitro. Thus, immunization with the WTrPFO and its non-toxic C-terminal domain generated neutralizing antibodies, suggesting their vaccine potential against the PFO. Thus, the non-toxic C-terminal domain of PFO could serve as an alternative to PFO as a vaccine candidate.
Publisher
Springer Nature B.V
Subject
