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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 101, No. 1, 2006, pp. 9-13
Bioline Code: oc06003
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 101, No. 1, 2006, pp. 9-13

 en Recombinant tegumental protein Schistosoma japonicum check for this species in other resources very lowdensity lipoprotein binding protein as a vaccine candidate against Schistosoma japonicum
Xiao-Xian Gan; Li-Ying Shen; Yue Wang; Jian-Zu Ding; Hui-Ying Shen; Xiao-Peng Zeng; Donald P McManus; Paul J Brindley & Jinjiang Fan

Abstract

A polyhistidine-tagged recombinant tegumental protein Schistosoma japonicum check for this species in other resources very lowdensity lipoprotein binding protein (SVLBP) from adult Schistosoma japonicum was expressed in Escherichia coli check for this species in other resources . The affinity purified rSVLBP was used to vaccinate mice. The worm numbers and egg deposition recovered from the livers and veins of the immunized mice were 33.5% and 47.6% less than that from control mice, respectively (p<0.05). There was also a marked increase in the antibody response in vaccinated mice: the titer of IgG1 and IgG2a, IgG2b in the vaccinated group was significantly higher than that in the controls (>1:6,400 in total IgG). In a comparison of the reactivity of sera from healthy individuals and patients with rSVLBP, recognition patterns against this parasite tegumental antigen varied among different groups of the individuals. Notably, the average titres of anti-rSVLBP antibody in sera from faecal egg-negative individuals was significantly higher than that in sera from the faecal egg-positives, which may be reflect SVLBP-specific protection. These results suggested that the parasite tegumental protein SVLBP was a promising candidate for further investigation as a vaccine antigen for use against Asian schistosomiasis.

Keywords
Schistosoma japonicum - Schistosoma japonicum very lowdensity lipoprotein binding protein - vaccine

 
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