食品科学 ›› 2009, Vol. 30 ›› Issue (3): 163-166.

• 生物工程 • 上一篇    下一篇

苯甲酸人工抗原的合成与免疫效价的测定

赵 伟,魏晨曦,夏 莹,杨 旭,丁书茂,袁均林*   

  1. 华中师范大学生命科学学院
  • 收稿日期:2008-01-29 修回日期:2008-06-04 出版日期:2009-02-01 发布日期:2010-12-29
  • 通讯作者: 袁均林* E-mail:yuanjl@mail.ccnu.edu.cn
  • 基金资助:

    国家科技部建设部科技支撑计划项目(2006BAJ02A10);国家科技部卫生部科技支撑计划项目(2006BAI19B05)

Synthesis and Immunological Potency Determination of Benzoic Acid Artificial Antigen

ZHAO Wei,WEI Chen-xi,XIA Ying,YANG Xu,DING Shu-mao,YUAN Jun-lin*   

  1. (School of Life Science, Huazhong Normal University, Wuhan 430079, China)
  • Received:2008-01-29 Revised:2008-06-04 Online:2009-02-01 Published:2010-12-29
  • Contact: YUAN Jun-lin* E-mail:yuanjl@mail.ccnu.edu.cn

摘要:

通过苯甲酸的衍生物邻苯二甲酸酐(PA)的氨解法将苯甲酸(BA)偶联到载体蛋白上合成苯甲酸的人工抗原:免疫原苯甲酸- 鸡卵清蛋白(BA-OVA)和包被原苯甲酸- 牛血清白蛋白(BA-BSA)。通过紫外光谱扫描、红外光谱扫描及SDS 聚丙烯酰胺凝胶电泳的方法检测鉴定人工抗原,并用免疫原(BA-OVA)免疫BALB/c 小鼠,检测抗体的生成。结果表明,苯甲酸人工抗原的合成成功。根据邻苯二甲酸酐、人工抗原和载体蛋白的紫外吸收值,计算出免疫原中苯甲酸(BA)与载体鸡卵清蛋白(OVA)的偶联比约为174:1。免疫小鼠血清中的抗体通过ELISA法检测为阳性(血清效价达到了1: 3.2 × 105),表明合成的抗原已诱导出针对苯甲酸的特异性抗体生成,为进一步的苯甲酸单克隆抗体制备和免疫检测提供可靠的免疫原。

关键词: 苯甲酸, 邻苯二甲酸酐, 人工抗原, 抗体

Abstract:

Through the ammonolysis method of phthalic anhydride (PA), the derivative of benzoic acid (BA) was used to synthesize the artificial antigen of BA in the present study. BA was linked to ovalbumin (OVA) to generate immunogenic antigen BA-OVA and also was linked to bovine serum albumin to generate coating antigen BA-BSA. Artificial antigen was detected and identified by UV and IR spectroscopies as well as SDS-polyacrylamide gels electrophoresis. BA-OVA was further used to immune BALB/c mice, and the generation of antibody was detected. The detection results showed that the artificial antigen of BA has been synthesized successfully. It was calculated that the ratio of BA to OVA is 174:1 based on their UV absorbance. The antibody is positive in serum of immuned mice detected by ELISA (The titration of antiserum is 1:3.2 × 105), which suggests that the antigen can induce the generation specific antibody of BA. The synthesis of BA artificial antigen makes it possible to establish monoclonal antibodies.

Key words: benzoic acid, phthalic anhydride, artificial antigen, antibody

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