C型产气荚膜梭菌β1、β2毒素基因的融合

被引:10
作者
许崇波
曾瑾
许崇利
王玉炯
机构
[1] 大连大学生物工程学院
[2] 宁夏大学生命科学学院
[3] 宁夏大学生命科学学院 大连
[4] 银川
关键词
产气荚膜梭菌; β1毒素; β2毒素; 融合基因; 基因表达;
D O I
10.13343/j.cnki.wsxb.2005.02.010
中图分类号
S852.61 [病原细菌];
学科分类号
090601 ;
摘要
利用PCR技术 ,从C型产气荚膜梭菌染色体DNA中扩增出 β1 和 β2 毒素基因 ,构建了含 β1 - β2 融合基因表达质粒的重组菌株BL2 1(DE3) (pETXB12 )。经酶切鉴定和序列测定证实 ,构建的重组质粒pETXB12含有 β1 - β2 融合基因 ,且基因序列和阅读框架正确。经ELISA检测 ,重组菌株表达的 β1 - β2 融合蛋白能够被 β1 、β2 毒素抗体识别。免疫实验结果表明 ,用β1 - β2 融合蛋白免疫的小鼠可以抵抗 1MLD的C型产气荚膜梭菌C5 94 4毒素攻击 ,表明构建的重组菌株可以作为预防仔猪红痢基因工程亚单位苗的候选菌株。
引用
收藏
页码:202 / 205
页数:4
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