食品科学 ›› 2010, Vol. 31 ›› Issue (11): 192-196.doi: 10.7506/spkx1002-6630-201011041

• 生物工程 • 上一篇    下一篇

磺胺嘧啶单克隆抗体的制备与鉴定

王刘花,许 杨* ,郭杰标,张 泓,何庆华   

  1. 南昌大学 食品科学与技术国家重点实验室,中德联合研究院
  • 收稿日期:2009-11-09 修回日期:2010-04-12 出版日期:2010-06-01 发布日期:2010-12-29
  • 通讯作者: 许 杨 E-mail:wangliumeis@sina.com
  • 基金资助:

    江西省科技支撑计划项目(2007BS12501)

Preparation and Identification of Anti-sulfadiazine Monoclonal Antibody

WANG Liu-hua,XU Yang* ,GUO Jie-biao,ZHANG Hong,HE Qing-hua   

  1. Sino-Germany Joint Research Institute, State Key Laboratory of Food Science and Technology, Nanchang
    University, Nanchang 330029, China
  • Received:2009-11-09 Revised:2010-04-12 Online:2010-06-01 Published:2010-12-29
  • Contact: XU Yang E-mail:wangliumeis@sina.com

摘要:

采用重氮法同时制备结合比分别为9.0、8.0、3.7 的3 种磺胺嘧啶免疫抗原,并将其免疫BALB/c 小鼠,其中结合比为8.0 的一组免疫效果最佳。获得一株稳定分泌抗磺胺嘧啶单克隆抗体的杂交瘤细胞(1F6),体内诱生法制备腹水。间接ELISA 测定腹水效价为1:1.28 × 106,建立间接竞争ELISA 标准曲线,其检测下限为10.4ng/mL,线性范围为14.8~421.5ng/mL,IC50 值为79.1ng/mL,与磺胺二甲嘧啶、磺胺间甲氧嘧啶、磺胺对甲氧嘧啶交叉反应率分别为 0.3%、0.99%、4.5%,与磺胺甲噁唑、磺胺喹恶啉、对氨基苯甲酸、磺胺、对氨基苯磺酸未见有交叉反应。经鉴定,单克隆抗体免疫球蛋白为鼠IgG 的2b 亚类。

关键词: 磺胺嘧啶, 重氮法, 酶联免疫检测, 单克隆抗体

Abstract:

In order to generate a monoclonal antibody (McAb) against sulfadianzine (SD), three separate immunogens with SD/BSA conjugation ratios of 9.0, 8.0 and 3.7 were prepared by diazotization method and BALB/c mice were then immunized with the immunogens. An optimum immunization was observed in BALB/c mice immunized with the immunogen with middle SD/BSA conjugation ratio. A McAb (1F6) with high affinity to SD was obtained by hybridoma technique. The titer of the McAb was 1:1.28 ×106 in ascites according to the indirect ELISA determination. IC50 and the lowest detectable limit (LDL) of the McAb in linear range of 14.8-421.5 ng/mL for SD were 79.1 ng/mL and 10.4 ng/mL, respectively. The cross-reactivity ratios of the McAb against sulfamethazine, sulfamonomethoxine and sulfamethoxydiazine were 0.3%, 0.99% and 4.5%, respectively, while no cross-reactivity to sulfamethoxazole, sulfaquinoxaline, 4-aminobenzoic acid, sulfanilamide or sulfanilic acid was observed. The sub-class of the McAb was identified as IgG2b.

Key words: sulfadiazine, diazotization, ELISA, monoclonal antibody

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