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中国防痨杂志 ›› 2005, Vol. 27 ›› Issue (5): 285-288.

• 论著 • 上一篇    下一篇

卡介苗诱导小鼠产生保护性免疫的机制研究

张国龙;石瑞如;高飞絮;王江东;张霞;秦殊;王伟;   

  1. 河南省胸科医院中心实验室 郑州 450003;
  • 出版日期:2005-05-10 发布日期:2005-11-03

Research on the mechanism of BCG inducing a protective immunity in mice

Zhang Guolong,Shi Ruiru,Gao Feixu,et al.   

  1. Central Lab.,The Chest Hospital of Henan Province,Zhengzhou 450003,China
  • Online:2005-05-10 Published:2005-11-03

摘要: 目的 为了探索结核感染保护性免疫的产生机制及主要抗原成分。方法 我们调查了小鼠PEC细胞分别经活卡介苗和热杀死卡介苗刺激后,所产生的IL-12p40,IL-18和γ-干扰素的水平。调查卡介苗菌体裂解液和培养过滤液诱导细胞因子能力。结果 活的卡介苗可以激活巨噬细胞,诱导出IL-12p40和IL-18,而死的卡介苗却不能。活的和死的卡介苗菌体裂解物都可以诱导细胞产生IL-12p40。活的卡介苗的培养过滤液可以诱导出IL-12p40。而热杀死卡介苗过滤液却不能产生IL-12p40。结论 活的卡介苗分泌到培养上清液中的热稳定物质可以诱导细胞因子的大量产生。

关键词: 结核, 免疫, 卡介苗

Abstract: Objective To investigate the mechanism on BCG inducing protective immunity,and to seek for the component of BCG playing main role on it.Methods We determined the level of IL-12p40,IL-18,and IFN-γ secreted by peritoneal exudate cells(PEC) from the mice in response to the lysates or the culture filtrates of viable or killed M.bovis BCG strain.Results Viable BCG strain could activate macrophage to produce both IL-I 2p40 and IL-18.Their lysate and culture filtrate also showed the activity inducing lL-12p40.In contrast,killed BCG strain and heat-treated filtrate could not induce IL-12p40 and IL-18 pro ductions.However,the lysate of killed BCG strain exerted significant activity inducing IL-12p40.Conclusion It showed that some heat stable factors in the culture supernatant from viable BCG strain contribute to the cyto kine productions.

Key words: Tuberculosis, Immunity, BCG