抗炭疽毒素保护性抗原单克隆抗体的制备及功能分析
发布时间:2018-08-28 20:12
【摘要】:目的:原核表达炭疽杆菌保护性抗原PA10蛋白,制备单克隆抗体,并进行功能分析。方法:人工合成炭疽杆菌保护性抗原PA10编码基因并克隆入pUC57载体,酶切鉴定后,将PA10编码基因插入原核表达载体pColdⅡ中,测序验证正确后转化至大肠杆菌BL21(DE3),在IPTG和低温条件下诱导蛋白表达,SDS-PAGE验证产物;用HiTrap IMAC HP柱纯化重组蛋白,Western blot进一步验证。以纯化获得PA10重组蛋白为抗原,常规程序免疫BALB/c小鼠,制备单克隆抗体,并检测所制备抗体的中和活性。结果:获得的PA10重组蛋白免疫小鼠制备单克隆抗体,最终获得了4株特异性的单克隆抗体(分别命名为2G8、5A8、7B3、9C9)。经体外炭疽毒素保护试验证实,其中1株单抗(7B3)具有较强的中和活性,其保护率可高达96%。结论:本文成功构建并表达炭疽杆菌保护性抗原PA10,制备了具有中和活性的抗PA单克隆抗体,为构建人源化的抗PA中和抗体奠定基础,从而有望用于炭疽病的治疗。
[Abstract]:Aim: to express PA10 protein of Bacillus anthracis protective antigen in prokaryotic expression and to prepare monoclonal antibody and analyze its function. Methods: the PA10 encoding gene of Bacillus anthracis protective antigen was synthesized and cloned into pUC57 vector. The PA10 encoding gene was inserted into the prokaryotic expression vector pCold 鈪,
本文编号:2210488
[Abstract]:Aim: to express PA10 protein of Bacillus anthracis protective antigen in prokaryotic expression and to prepare monoclonal antibody and analyze its function. Methods: the PA10 encoding gene of Bacillus anthracis protective antigen was synthesized and cloned into pUC57 vector. The PA10 encoding gene was inserted into the prokaryotic expression vector pCold 鈪,
本文编号:2210488
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