中国寄生虫学与寄生虫病杂志 ›› 2003, Vol. 21 ›› Issue (5): 13-302.

• 实验研究 • 上一篇    下一篇

东方田鼠血清IgG抗体的快速纯化法

蒋守富,潘彩娥,何艳燕,朱民,李浩,石耀军,魏梅雄   

  1. 上海市疾病预防控制中心,中国农业科学院上海家畜寄生虫病研究所,农业部动物寄生虫学重点开放实验室,上海 200232,上海 200336
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-10-30 发布日期:2003-10-30

A Rapid Procedure to Purify Serum IgG from Microtus fotis

JIANG Shou-fu,PAN Cai-e,HE Yan-yan,ZHU Min,LI Hao,SHI Yao-jun,WEI Mei-xiong   

  1. 1 Shanghai Municipal Center for Disease Control & Prevention;Shanghai 200336 2 Shanghai Institute of Veterinary Parasitology,Chinese Academy of Agricultural Sciences,Key Laboratory of Animal Parasitology,Ministry of Agriculture,Shanghai 200232
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-10-30 Published:2003-10-30

摘要:   目的 探索快速、高效纯化东方田鼠血清IgG抗体的方法。 方法 采用G蛋白或A蛋白亲和层析法,对3种东方田鼠血清IgG抗体进行纯化,比较抗体纯度和回收率。 结果 获得的IgG抗体纯度和回收率均以G蛋白亲和层析法为高。纯化的抗体活性高,与酶标二抗的吸附力分别为非IgG洗脱物的8.5倍和未纯化血清IgG的3.1倍。 结论 G蛋白亲和层析法纯化东方田鼠血清IgG快速、活性高,具有实用价值。

关键词: 东方田鼠, 亲和层析, G蛋白, IgG

Abstract:  Objective To evaluate the procedure to purify IgG antibodies from Microtus fotis serum. Methods IgG antibodies from sera of three groups of Microtus fotis were purified by protein G or protein A affinity chromatography, their purity and binding capacity were compared. Results The protein G affinity chromatography was more efficient than protein A affinity chromatography. The antibodies isolated from protein G affinity chromatography showed a higher purity and better activity than that from protein A affinity chromatography monitored by SDS-PAGE and ELISA. The ability of the purified IgG to bind the second antibodies were 8.5 times and 3.1 times that of non-IgG proteins and unpurified sera, respectively. Conclusion The protein G affinity chromatography is a rapid, convenient and reliable procedure for Microtus fotis serum IgG purification.

Key words: Microtus fotis, affinity chromatography, protein G, IgG