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多耐药临床分离株结核杆菌rpsL基因重组大肠杆菌-结核杆菌穿梭质粒pMV261/rpsL的构建及其功能鉴定 被引量:1

多耐药临床分离株结核杆菌rpsL基因重组大肠杆菌-结核杆菌穿梭质粒pMV261/rpsL的构建及其功能鉴定
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摘要 目的:构建多耐药临床分离株结核杆菌rpsL基因重组大肠杆菌-结核杆菌穿梭质粒pMV261/rpsL及其功能鉴定。方法:制备临床分离株多耐药结核杆菌基因组DNA,PCR扩增该株结核杆菌rpsL基因,构建及鉴定该株结核杆菌rpsL基因重组穿梭质粒PMV261/rpsL,重组穿梭质粒PMV261/rpsL电转化结核杆菌H37Rv株及其鉴定。结果:成功地构建了重组大肠杆菌-结核杆菌穿梭质粒PMV261/rpsL;重组大肠杆菌-结核杆菌穿梭质粒PMV261/rpsL电转化结核杆菌H37Rv株获得成功,并且重组质粒PMV261/rpsL电转化后的结核杆菌H37Rv株对链霉素耐药。结论:该临床分离株多耐药结核分支杆菌对链霉素耐药的机制仅仅是由于rpsL基因的93bp、94bp处碱基突变所致,耐药性是一个基因突变的结果,是单基因型。
出处 《中国病理生理杂志》 CAS CSCD 北大核心 2006年第3期614-617,共4页 Chinese Journal of Pathophysiology
基金 国家自然科学基金资助项目(No.30460129)
关键词 分枝杆菌 结核 基因 rpsL Mycobacterium, tuberculosis Genes, rpsL
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