猪圆环病毒2型Cap蛋白单克隆抗体的制备

doi:10.16431/j.cnki.1671-7236.2015.07.008

Abstract

Abstract: The structural protein Cap encoded by ORF2 of porcine circovirus type 2 (PCV2) was expressed in genetic engineering recombinant bacteria and used as the immunogen after purification.Five hybridoma cell lines against PCV2 Cap protein named as 3D12,4D5,4B9,4C9 and 4G10,respectively,were developed after fusion between SP2/0 myeloma cells and spleen cells of BALB/c mice immunized with purified recombinant PCV2 Cap protein.Except the heavy chain type of 4D5 was identified as IgG2b,others were identified as IgG1;The light chains were all kappa.In Western blotting assay,all the monoclonal antibodies (mAbs) couldn't specifically recognize the 47 ku recombinant PCV2 Cap protein,but showed strong specific fluorescence in PCV2 infected PK15 cells in IFA,which indicated that all the mAbs recognized comformational epitope.The neutralization test showed that all the mAbs had neutralization activity.These results laid the foundation for further study of the structure and function of PCV2 ORF2 gene,and establishment of the method for diagnosing PCV2 rapidly and exactly.

Key words: porcine circovirus type 2 (PCV2); recombinant protein; monoclonal antibodies

CLC Number:

LIANG Wu, SUN Yan, LV Mao-jie, LI Jian-li, YANG Bao-shou, QIAO Jian. Preparation of Monoclonal Antibodies against Porcine Circovirus Type 2 Cap Protein[J]. , 2015, 42(7): 1674-1679.

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Preparation of Monoclonal Antibodies against Porcine Circovirus Type 2 Cap Protein

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