›› 2003, Vol. 23 ›› Issue (3): 151-153.

• 论文 • 上一篇    下一篇

基因重组(酵母)乙肝疫苗对HBV转基因小鼠细胞免疫调节作用

  

  1. 1.中国人民解放军第四五八医院全军肝病中心,广州 510602;2.深圳市南山区科技园深圳康泰生物制品股份有限公司,深圳 518057
  • 收稿日期:2002-12-15 出版日期:2003-01-25 发布日期:2013-03-19

Cellular Imnune Regulation Effect of Recombinant Hepatitis B Vaccine on HBV Transgenic Mice

  1. 1.Liver Diseases of PLA,the 458th Hospital of PLA ,Guangzhou 510602,China;2.Shenzhen Kangtai Biological Products Co,LTD,Shenzhen 518057,China
  • Received:2002-12-15 Online:2003-01-25 Published:2013-03-19

摘要: 为研究基因重组乙肝疫苗对HBV转基因小鼠的免疫调节作用,取经HBsAg免疫的小鼠脾淋巴细胞,制成5×106细胞悬液,分两份,一份经无佐剂HBsAg体外刺激48h后,取上清检测细胞因子;另一份细胞于培养56 h后加入3H-TdR,继续培养16 h,测定cpm值。结果表明,转基因鼠经多次免疫8个月后,其脾细胞产生的Th1类细胞因子(IL-2、IFN-γ)及T细胞增殖水平均较单次免疫一周后有显著性提高。而采用不同剂量HBsAg按常规免疫时并不能提高IL-2的水平。结果提示,反复大剂量的HBsAg可以打破HBV转基因小鼠的免疫耐受,上调其细胞免疫功能,这为慢性乙肝的临床治疗提供了实验根据。

关键词: 乙肝疫苗, 转基因小鼠, 免疫耐受, Th1细胞因子, T细胞增殖

Abstract: To study the celluar immune responses of HBV transgenic (Tg) mice induced by genetic recombinant Hepatitis B vaccine,the HBV transgenic mice were immunized by Hepatitis B vacc-ine,and killed at different period. The spleen were removed, and lymphocyte were separated and divided into two parts. One were cultured for 48h with HBsAg and assayed for IL-2 and IFN-Yand the other part were labelled with 3H-TdR after cultured for 56 h,and cultured for another 16h. The culture were harvested and the cpm was determined by using a liquid scintillation counter. The result showed that the Thl cytokine production and lymphocyte proliferation of HBV Tg mice after repeated immunization for 8 months were much higher than those of immunized one time for 1 week. But after immunized as normal style with different doses,the IL-2 level were not different to one time immunization. The results suggested that the high dose with repeated immunization might broken the immunized tolerance of HBV Tg mice and upregulate cella-ar responses.

Key words: Hepatitis B vaccine , Transgenic mice , immunization tolerance, Thl cytokine, T lym-phocyte proliferation