›› 2012, Vol. 39 ›› Issue (6): 69-71.

• 生物技术 • 上一篇    下一篇

麋鹿重组朊蛋白单克隆抗体的制备及初步鉴定

张鑫鑫1,2, 刘雨田1, 吴晓东1, 刘焕奇2, 王志亮1   

  1. 1. 中国动物卫生与流行病学中心,山东青岛 266032;
    2. 青岛农业大学,山东青岛 266109
  • 收稿日期:2011-12-13 出版日期:2012-06-20 发布日期:2012-07-02
  • 通讯作者: 王志亮。Tel: 0532-87839188;E-mail:zlwang111@yahoo.com.cn E-mail:zlwang111@yahoo.com.cn
  • 作者简介:张鑫鑫(1987-),女,山东人,硕士,研究方向:兽医临床外科及基础病理。
    刘雨田(1976-),男,江西人,硕士,从事朊毒体的监测与研究工作。张鑫鑫和刘雨田为共同第一作者。
  • 基金资助:
    国家公益性行业(农业)科研专项(200903037)。

Development and Preliminary Identification of Monoclonal Antibodies against Elk Recombinant Prion Protein

ZHANG Xin-xin1,2, LIU Yu-tian1, WU Xiao-dong1, LIU Huan-qi2, WANG Zhi-liang1   

  1. 1. China Animal Health and Epidemiology Center,Qingdao 266032,China;
    2. Qingdao Agricultural University,Qingdao 266109,China
  • Received:2011-12-13 Online:2012-06-20 Published:2012-07-02

摘要: 为研制鹿慢性消耗性疾病(chronic wasting disease,CWD)单克隆抗体,本研究以原核表达后经纯化的麋鹿重组成熟朊蛋白(PrPc)为免疫原免疫PrPc基因敲除小鼠(PrPc-null mice)。两次加强免疫后,利用淋巴细胞杂交瘤技术,取脾细胞与SP2/0骨髓瘤细胞进行细胞融合,间接ELISA方法筛选阳性杂交瘤细胞,采用3次有限稀释法实现杂交瘤细胞的亚克隆,筛选出5株能稳定分泌针对麋鹿重组成熟朊蛋白特异性单克隆杭体(McAbs)的杂交瘤细胞株5A5、3B2、6D12、5E3、1F5,其腹水ELISA效价均达到1∶10000以上。经鉴定,5株单抗均为IgG抗体,5A5、6D12、5E3株为IgG1亚类,3B2、1F5株为IgG2a亚类。Western blotting鉴定结果表明,获得的McAbs均能特异性识别麋鹿重组成熟朊蛋白和健康麋鹿脑组织匀浆中的PrPc。本研究制备了CWD腹水McAbs,同时也为CWD的研究及其诊断方法的建立奠定了基础。

关键词: 麋鹿; 重组PrPc蛋白; 单克隆抗体; Western blotting

Abstract: To develop the monoclonal antibody against chronic wasting disease, in this study, the PrPc-null mice were immunized with elk purified recombinant prion protein(PrPc). After twice booster immunizations, mouse spleen cells were fused with myelomas SP2/0 by lymphocyte hybridoma technique. Five hybridoma cell strains which could stably excrete specific monoclonal antibodies against elk PrPc were obtained by ELISA and three times subclone. The five hybridoma cell strains were named 5A5,3B2,6D12,5E3 and 1F5 respectively, whose ELISA titer were all more than 1∶10000. By evaluating, three strains belonged to IgG1 subset and other two were IgG2a subset. These McAbs could identify both elk recombinant PrPc and PrPc from elk healthy brain homogenate by Western blotting. This study filled the void of monoclonal antibody against CWD in China. Furthermore, the monoclonal antibodies laid a foundation for the research and detection of CWD.

Key words: elk; recombinant PrPc; monoclonal antibody; Western blotting

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