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传染性法氏囊病毒免疫原基因在毕赤酵母中的高效分泌表达

作  者:
蓝胜芝;徐素珍;李宝臣;曹玉飞;赵艳敏;金顺福
单  位:
浙江诺倍威生物技术有限公司
关键词:
鸡传染性法氏囊病(IBD);超强毒株VP2;巴斯德毕赤酵母;高效分泌表达
摘  要:
从国内分离的鸡传染性法氏囊病毒(IBDV)众多流行株中获得超强毒株(vvIBDV),应用RT-PCR方法,扩增得到IBDV主要保护性抗原VP2基因的开放编码框,克隆至巴斯德毕赤酵母表达载体pPICZαA,将该重组质粒pPICZαA-VP2以电转化方法转入毕赤酵母X-33感受态细胞中,通过PCR鉴定、表型筛选和抗生素浓度梯度筛选,获得高拷贝阳性重组酵母菌株X-33-pPICZαA-VP2。经摇瓶诱导表达试验获得稳定高效分泌表达的酵母工程菌,表达量为0.459mg/ml,聚丙烯酰胺凝胶电泳(SDS-PAGE)、免疫印迹(Western-blot)以及动物试验表明,重组酵母工程菌表达的目的蛋白具有鸡传染性法氏囊病病毒天然蛋白的生物活性和免疫原性。
译  名:
High Performance Secretion and Expression of vvIBDV VP2 in Pichia pastoris
作  者:
Lan Shengzhi;Xu Suzhen;Li Baochen;Cao Yufei;Zhao Yanmin;Jin Shunfu;Zhejiang EBVAC Biotech Co. Ltd.;
关键词:
Infectious bursal disease(IBD);;Very virulent virusVP2;;Pichia pastoris;;Efficient Secretion expression
摘  要:
The VP2 gene of vvIBDV was inserted into the Pichia pastoris expression vector of pPICZαA. Then the recombinant plasmid of pPICZαA VP2 was transformed into X-33 by electroporation. The multi-copy insertion transformants X-33-pPICZαA-VP2 were screened by PCR 、phenotype and Zeocin-resistance. The expressed VP2 accumulated up to about 0.459mg/mL. SDS-PAGE 、Western blot and animal experiment demonstrated that VP2 product has the similar bioactivity and antigenicity as the natural one.

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