title: Expression and Purification of P43 Toxoplasma gondii Surface Antigen.
abstract: BACKGROUND
  Toxoplasma gondii is an obligate intracellular protozoan parasite, capable of infecting all species of mammals including man. Congenital toxoplasmosis is more important during pregnancy for the first time. In this study we expressed and purified P43 Toxoplasma gondii tachyzoite and bradyzoite specific surface antigen.
  
  
  METHODS
  The recombinant pGEMEX-1 contained Toxoplasma P43 coding sequence was transformed into E. coli and mass cultured in LB medium contained 100 μg/ml ampicillin at 37°C over night. The T7 promoter was induced by 1mM isopropyl-1-thio-ß-D-galactopyranoside (IPTG. Recombinant protein was purified by affinity chromatography and confirmed by gel diffusion dot blot and western blot,-using specific anti Toxoplasma antibodies.
  
  
  RESULTS
  Recombinant plasmid was induced by IPTG and analyzed by SDS-PAGE. Recombinant protein was confirmed by Western-blot and dot blot using anti human Toxoplasma antibody.
  
  
  CONCLUSIONS
  Recombinant Toxoplasma P43 was produced successfully.
authors.affiliation: Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran ; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: K
authors.initials: K
authors.lastname: Khanaliha
authors.forename: Mh
authors.initials: M
authors.lastname: Motazedian
authors.forename: B
authors.initials: B
authors.lastname: Sarkari
authors.forename: M
authors.initials: M
authors.lastname: Bandehpour
authors.forename: Z
authors.initials: Z
authors.lastname: Sharifnia
authors.forename: B
authors.initials: B
authors.lastname: Kazemi
keywords: Bradyzoite; Recombinant P43; Tachyzoite; Toxoplasma