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抗PLA2G13多克隆和单克隆抗体的制备与鉴定 被引量:1

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摘要 目的:制备分泌型的磷脂酶A2 G13(group XIII se-cretedphos pholipaseA2,PLA2G13)的多克隆抗体(pAb)和单克隆抗体(mAb),并对抗体进行特性鉴定。方法:以人正常肝cDNA文库为模板,构建重组表达质粒pGEX-4T-1-PLA2G13(即PLA2G13-GST)和pET-32a-PLA2G13(即PLA2G13-His)。PLA2G13-GST融合蛋白作为免疫原制备兔pAb和鼠mAb。采用Western blot鉴定兔抗人PLA2G13 pAb的特异性。采用Western blot和Immunohistochemistry鉴定鼠抗人PLA2G13 mAb的特异性。结果:PLA2G13-GST和PLA2G13-His融合蛋白在均大肠杆菌中以包涵体形式大量表达。Western blot鉴定表明,兔抗人PLA2G13 pAb可特异地识别HepG2细胞系中相对分子质量(Mr)约19700的蛋白,与文献报道中PLA2G13的实际Mr相符。通过筛选共获得8株可稳定分泌抗PLA2G13的杂交瘤细胞株,Western blot鉴定表明6株可识别重组人PLA2G13蛋白,免疫组织化学鉴定显示2株可特异性识别正常肝组织中的PLA2G13蛋白。结论:成功地制备了抗人PLA2G13兔pAb和鼠mAb,为进一步研究PLA2G13的功能提供了特异性检测工具。
出处 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2008年第4期389-392,共4页 Chinese Journal of Cellular and Molecular Immunology
基金 国家重点基础研究发展计划(973)资助项目(2006CB910803) 国家自然科学基金青年科学基金项目(30600738)
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  • 1Yang Q, Graham T E, Mody N, et al. Serum retinol binding protein 4 contributes to insuhn resistance in obesity and type 2 diabetes [J]. Nature, 2005, 436(7049): 356-362.
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