首页|重组NDV HN基因乳酸菌穿梭表达载体的构建及在大肠杆菌中的表达

重组NDV HN基因乳酸菌穿梭表达载体的构建及在大肠杆菌中的表达

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为构建新城疫病毒乳酸菌穿梭表达载体,采用RT-PCR方法从新城疫病毒中扩增了HN基因,将其克隆到pMD18-T Simple Vector中.经测序鉴定正确后,定向克隆至乳酸菌表达载体pW425et中,并转化入表达宿主菌BL21 (DE3),利用IPTG诱导表达.采用SDS-PAGE和Western blotting检测重组菌在大肠杆菌中的表达情况.结果表明:NDVHN基因与表达载体pW425et正确重组,且该重组菌传50代次以上,重组质粒依然稳定.SDS-PAGE显示表达出约63 kD的条带,与已知表达的HN蛋白大小相符.Western blotting进一步证实该蛋白能被NDV阳性抗体所识别,具有反应原性.表明构建了重组NDVHN基因乳酸菌穿梭表达载体.
Construction of Recombinant Newcastle Disease Virus HN Lactobacillus Shuttle Expression Vector and Expression in Escherichia coli
To express a recombinant Newcastle disease virus Lactobacillus expression vector, HN gene was amplified by RT - PCR from DNV and cloned into pMD18-T Simple Vector. After receiving the right sequence, the particle was further recombined with Lactobacillus expression vector and then transformed into E. coli BL21 (DE3) . The result showed that NDV HN gene was correctly cloned into Lactobacillus expression vector and the recombinant strain could be obtained for at least 50 generations. SDS - PAGE and Western blotting results displayed that NDV HN had reactionogenicity with NDV positive antibody, indicating that recombinant NDV HN Lactobacillus expression vector was constructed.

NDVhemagglutinin-neuraminidaseLactobacillus expression vectorEscherichia coli

郭衍冰、胡静涛、于丹、曹岩峰、王一鸣、张旺、王春凤

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吉林农业大学动物科学技术学院,长春130118

长春市动物疾病预防控制中心,长春130000

沈阳丰美生物技术有限公司,沈阳110164

新城疫病毒 血凝素-神经氨酸酶 乳酸菌穿梭表达载体 大肠杆菌

吉林省科技发展计划项目吉林省教育厅"十二五"科学技术研究项目国家高技术研究发展计划(863计划)教育部高等学校博士学科点专项科研基金人兽共患病教育部重点实验室开放平台基金吉林农业大学大学生科技创新基金

2011011122011492011AA10A20920110061110005

2013

吉林农业大学学报
吉林农业大学

吉林农业大学学报

CSTPCDCSCD北大核心
影响因子:1.014
ISSN:1000-5684
年,卷(期):2013.35(2)
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