分类号:R383.2+4;R392.11文献标识码:A
文章编号:1000-8861(2001)01-0009-04
Changes of sIL-2R and IFN-γ in mice induced by recombinant BCG-Sj26GST vaccine
LI Wen-gui(Institute of Infectious and Parasitic Diseases, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016,China)
SHI You-en(Department of Parasitology, Tongji Medical University, Wuhan 430030, China)
Abstract:ObjectiveTo investigate the effects of recombinant BCG-Sj26GST vaccine of schistosoma japonicum on sIL-2R and IFN-γ produced by spleen cells of mice. MethodsIn the first experiment, BALB/C mice were immunized subcutaneously by 1×106 and 1×108 CFU vaccine respectively, challenged with Sj cercariae 8 weeks after immunization and killed 6 weeks after infection to separate spleens, PBS served as control; in the second experiment, after immunized subcutaneously and intravenously by 1×106 CFU vaccine respectively,4 mice were killed to separate spleens on 0、4、8、10、14 and 16 weeks after immunization, spleen cells were stimulated by Sj26 or ConA. Levels of sIL-2R and IFN-γ in supernatant of spleen cells were detected by ELISA.ResultsLevels of sIL-2R and IFN-γ increased obviously after immunization with the vaccine against challenge with Sj cercariae; dynamic observation showed sIL-2R and IFN-γreached the highest level on 8-10 weeks and 4-8 weeks after immunization respectively. ConclusionRecombinant BCG-Sj26GST vaccine of schistosoma japonicum may strengthen host’s Th1 response, promote Th1 cells to secrete IL-2 and IFN-γ. These cytokines and immune cells may influence each other to increase host’s protection against schistosomiasis.
Keywords:schistosoma japonicum; recombinant BCG-Sj26GST vaccine; sIL-2R; IFN-γ基金项目:国务院总理基金资助项目(94-Y-19)
作者简介:李文桂(1967-),男,湖北郧县人,主治医师,博士,主要从事分子免疫学研究。Tel:(023)69012724;E-mail:liwengui@hotmail.com参考文献:
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收稿日期:2000年6月9日
修稿日期:2000年10月11日
出版日期:2001年1月15日
