中国寄生虫学与寄生虫病杂志 ›› 2003, Vol. 21 ›› Issue (1): 8-26.

• 论著 • 上一篇    下一篇

日本血吸虫重组抗原rSjGST-32诱导小鼠保护性免疫效果的比较

田明礼,蔡春,易新元*,曾宪芳,张顺科
  

  1. 中南大学湘雅医学院寄生虫学教研室,长沙 41007
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-02-28 发布日期:2003-02-28

Protective Effect Against Schistosoma japonicum of Recombinant Fusion Protein SjGST-32 in Mice

TIAN Ming-li,CAI Chun,YI Xin-yuan*,ZENG Xian-fang,ZHANG Shun-ke
  

  1. Department of Parasitology,Xiangya Medical College,Central Southern University,Changsha 410078
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-02-28 Published:2003-02-28

摘要:   目的 探索日本血吸虫重组抗原rSjGST-32适合的免疫剂量。 方法 以50、100、200μg3个不同剂量rSjGST-32加佐剂皂角甙A(QuilA)50μg免疫BALB/c小鼠,同时设QuilA和PBS对照组。ELISA法检测抗体水平。末次免疫4wk后攻击感染,用减虫率及减卵率表示保护力。 结果 与PBS对照组比较,50、100、200μgrSjGST-32组的减虫率分别为38.1%,47.8%和48.8%;每克肝卵(LEPG)减少率分别为39.1%,53.5%和53.6%;每条雌虫每克肝所含虫卵数(LEPF)减少率分别为22.5%,22.8%和21.8%;抗体滴度分别达1∶51200,1∶102400和1∶102400。 结论 重组抗原rSjGST-32加QuilA佐剂免疫小鼠,以100μgrSjGST-32剂量较为适合。

关键词: 日本血吸虫, 重组抗原, 免疫效果, 抗原剂量

Abstract:  Objective To explore the optimal immune doses of recombinant antigen rSjGST-32, with QuilA as adjuvant. Methods BALB/c mice were immunized with doses of 50, 100 and 200 μg rSjGST-32/mouse plus 50 μg QuilA adjuvant. QuilA and PBS were used as controls. Levels of specific antibodies were detected by ELISA. The mice were challenged 4 weeks after last vaccination. Worms and eggs collected from the livers of mice were counted 45 days after challenge. Results As compared with the control groups, the worm reduction rate in the 50, 100 and 200 μg experiment groups was 38.1%, 47.8% and 48.8%, respectively. The reduction rate of liver eggs per gram (LEPG) was 39.1%, 53.5% and 53.6%, respectively, and the reduction rate of the liver eggs per female (LEPF) was 22.5%, 22.8% and 21.8%, respectively. The specific antibody titers in sera reached 1∶51 200, 1∶102 400 and 1∶102 400, respectively before challenge. Conclusion The results show that for vaccinating BALB/c mice, the optimal antigen dose is 100 μg of recombinant rSjGST-32 plus QuilA adjuvant.

Key words: Schistosoma japonicum, recombinant protein, antigen dose, immune effect, SjGST-32