中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (2): 3-77.

• 论著 • 上一篇    下一篇

日本血吸虫重组谷胱甘肽-S-转移酶诱生的保护性免疫应答特征的研究

周生华,刘述先,宋光承,徐裕信
  

  1. 中国预防医学科学院寄生虫病研究所 上海 200025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-04-30 发布日期:1999-04-30

STUDIES ON THE FEATURES OF PROTECTIVE IMMUNE RESPONSE INDUCED BY RECOMBINANT Sjc26GST OF SCHISTOSOMA JAPONICUM *

ZHOU Shenghua;LIU Shuxian;SONG Guangcheng;XU Yuxin

  

  1. Department of Immunology;Institute of Parasitic Diseases;Chinese Academy of Preventive Medicine **;Shanghai 200025
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-04-30 Published:1999-04-30

摘要:   目的:研究日本血吸虫重组谷胱甘肽-S-转移酶(reSjc26GST)在不同品系小鼠(BALB/c小鼠及C57BL/6小鼠)诱生免疫应答的差异。方法:将reSjc26GST(弗氏佐剂)经皮下免疫BALB/c小鼠及C57BL/6小鼠,收集免疫前和免疫后血清及取小鼠脾脏,分析reSjc26GST免疫小鼠诱生的特异性抗体、脾脏淋巴细胞特异性增殖能力及细胞因子种类等。结果:reSjc26GST免疫C57BL/6小鼠所诱生的抗体总IgG及IgG亚类均较明显高于免疫BALB/c小鼠。抗体IgG亚类分析显示,reSjc26GST在C57BL/6小鼠诱生较高滴度的IgG1和IgG2a及IgG2b(血清按1∶400稀释,A492nm值分别为>3.0、1.127、>3.0),而在BALB/c小鼠主要诱生较低滴度的IgG1和IgG2a及IgG2b(血清按1∶400稀释,A492nm值分别为1.189、0.39、0.625);reSjc26GST免疫能够诱导小鼠Th细胞激活。细胞因子分析显示reSjc26GST免疫C57BL/6小鼠既能诱生较高水平的IL-2及IFN-γ,又能诱生IL-5。而reSjc26GST免疫BALB/c小鼠仅

关键词: 日本血吸虫, 重组谷胱甘肽-S-转移酶, 免疫应答

Abstract:  AIM: To compare the differences in the protective immune response induced by reSjc26GST between C57BL/6 and BALB/c mice. METHODS: Mice were immunized subcutaneously with reSjc26GST emulsified with Freund’s adjuvant. The specific antibody isotypes elicited by reSjc26GST, in vitro lymphocyte proliferation and cytokine responses to reSjc26GST were examined. RESULTS: The level of anti reSjc26GST IgG was higher in immunized C57BL/6 mice than in BALB/c mice, and examination of the IgG subclasses demonstrated that reSjc26GST immunized C57BL/6 mice resulted in predominantly IgG1 and IgG2a/IgG2b antibody responses, whereas in BALB/c mice, IgG1 antibody. Cytokine production assays revealed that the quantity of IFN γ and IL 2 and IL 5 released from the reSjc26GST primed splenocytes were significantly higher in C57BL/6 mice than in BALB/c mice. These results showed that the immunization with reSjc26GST in C57BL/6 mice elicited a mixed immune reaction of Th1 and Th2 cell responses as demonstrated by the elevated levels of IgG1, IgG2a/IgG2b and IL 2, IFN γ,IL 5 , whereas in BALB/c mice, reSjc26GST immunization elicited Th2 response as demonstrated by the elevated levels of IgG1, IL 2 and IFN γ. CONCLUSION: Immunization with reSjc26GST could elicit higher humoral and cellular immune responses in C57BL/6 mice than in BALB/c mice.

Key words: Schistosoma japonicum, recombinant Sjc26GST, immune response