Peer-reviewed veterinary case report
Expression of Neospora caninum NcSRS2 surface protein in Pichia pastoris and its application for serodiagnosis of Neospora infection.
- Journal:
- Pathogens and global health
- Year:
- 2013
- Authors:
- Pinheiro, Amanda Fernandes et al.
- Affiliation:
- Universidade Federal de Pelotas · Brazil
Plain-English summary
Neospora caninum is a parasite that can cause abortions in cattle. Researchers worked on a specific protein from this parasite, called NcSRS2, which is important for diagnosing infections. They used a type of yeast to produce this protein in a lab, and then they tested it with blood samples from cows that had been infected. The study showed that this method could help in diagnosing Neospora infections in cattle.
Abstract
Neospora caninum is considerd a major cause of abortion in cattle worldwide. The antigenic domain of NcSRS2 in N. caninum is an important surface antigen present in the membrane of this parasite. In the present study, the Pichia pastoris expression system proved to be a useful tool for the production of recombinant protein. The truncated NcSRS2 gene (by removal of the N-terminal hydrophobic sequence), was cloned in the vector pPICZalphaB, and integrated on the genome of the methylotrophic yeast P. pastoris. Subsequently, the NcSRS2 protein was expressed, purified, and characterized using naturally infected cattle sera and Mab 6xhistag. The recombinant protein NcSRS2 was present in the supernatant of the culture, where later it was concentrated and purified using ammonium sulfate (∼100 mg/ml). An indirect immunoenzymatic assay (ELISA) was performed using cattle sera from endemic N. caninum area.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/23683365/