›› 2013, Vol. 40 ›› Issue (10): 76-80.

• 生物技术 • 上一篇    下一篇

抗三肽囊素单克隆抗体的制备

邓舜洲, 郑智刚, 张文波, 谢笑芳, 邹柳, 邬向东, 谌南辉, 何后军, 朱芝秀   

  1. 江西农业大学动物科学技术学院, 江西南昌 330045
  • 收稿日期:2013-03-19 出版日期:2013-10-20 发布日期:2013-12-19
  • 通讯作者: 朱芝秀 E-mail:zhuzhixiu01@163.com
  • 作者简介:邓舜洲(1968-),男,江西人,博士,副教授,研究方向:动物传染病与免疫学。
  • 基金资助:
    国家自然科学基金(31160498);江西省自然科学基金(2010GZN0046);江西省教育厅项目(GJJ11402)。

Preparation of Monoclonal Antibodies against Bursin

DENG Shun-zhou, ZHENG Zhi-gang, ZHANG Wen-bo, XIE Xiao-fang, ZOU Liu, WU Xiang-dong, CHEN Nan-hui, HE Hou-jun, ZHU Zhi-xiu   

  1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China
  • Received:2013-03-19 Online:2013-10-20 Published:2013-12-19

摘要: 为研制抗三肽囊素(bursin,KHG-NH2)的单克隆抗体,本试验采用EDC法将三肽囊素分子赖氨酰(K)上的氨基与载体蛋白(BSA或OVA)定向偶联,分别制备三肽囊素免疫抗原(BSA-KHG-NH2)和检测抗原(OVA-KHG-NH2)。以BSA-KHG-NH2免疫BALB/c小鼠,应用杂交瘤技术,筛选到18株能稳定分泌抗三肽囊素单克隆抗体的杂交瘤细胞株。这18株单克隆抗体与三肽囊素人工抗原的结合均能被三肽囊素、GKHG-NH2四肽阻断,但不能被KHGK四肽阻断,表明18株单抗与三肽囊素分子的结合具有高度特异性。以本研究制备的单抗2D2建立间接竞争ELISA方法,检测三肽囊素含量,检测下限为4 ng/mL,线性范围为4~500 ng/mL,加标检测回收率为85.0%~92.4%。

关键词: 三肽囊素; 人工抗原; 单克隆抗体; 间接竞争ELISA

Abstract: In order to produce monoclonal antibodies (McAbs) against bursin, the artificial antigens of bursin (BSA-KHG-NH2and OVA-KHG-NH2) were prepared by EDC method, in which the amino group on -Lys of bursin molecules was conjugated to bovine serum albumin (BSA) or chicken ovalbumin (OVA), respectively. BALB/c mice were immunized four times by BSA-KHG-NH2, and eighteen hybridoms producing anti-bursin monoclonal antibodies were obtained by limited dilution. The binding of artificial antigen OVA-KHG-NH2 to the McAbs were competitively inhibited by free bursin(KHG-NH2) and GKHG-NH2peptide,respectively, but couldn't be inhibited by free KHGK peptide. These results indicated that the 18 McAbs specifically bonded to bursin molecules. An IC-ELISA method to detect bursin was developed using McAb 2D2, in which the detection limits was about 4 ng/mL and the linear range of the inhibition curve was about 4 to 500 ng/mL, the recovery rate of bursin in the samples ranged from 85.0% to 92.4%.

Key words: bursin; artificial antigen; monoclonal antibodies; IC-ELISA

中图分类号: