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中国防痨杂志 ›› 2010, Vol. 32 ›› Issue (11): 756-759.

• 论著 • 上一篇    下一篇

结核分枝杆菌Rv0341蛋白编码基因iniB的多态性分析

 吴园1,2, 胡频频3, 王易伟3, 李秀全1, 毛旭虎2, 钟敏3,4   

  1. 1.解放军第二五四医院检验科; 2.第三军医大学医学检验系临床微生物及免疫学教研室暨重庆市生物制药工程技术研究中心; 3.重庆市结核基因诊断中心实验室; 4.重庆市公共卫生医疗救治中心;
  • 出版日期:2010-11-15 发布日期:2011-08-23
  • 基金资助:

    重庆市科委科技攻关项目(CSPC,2007AC5008); 重庆市卫生局医学科研重点项目(2009-1-31)

Polymorphism Analysis of gene iniB that encodes the hypothetical protein Rv0341 of M. tuberculosis by RFLP

Wu Yuan1,2; Hu Pinpin3; Wang Yiwei3; Li Xiuquan1; Mao Xuhu2; Zhong Min3,4   

  1. 1.254 PLA Hospital; Tianjin; 300142; China; 2.Department of Clinical Microbiology and immunolgy; college of laboratory medicine; Third Military Medical University-Chongqing Biopharmacenticals Engineering Technology Research Center; Chongqing 400038; 3.Central Laboratory of Genetic Diagnosis of Tuberculosis of Chongqing; Chongqing 400020; 4.Chongqing Infectious Disease Medical Center; Chongqing 400036; China;
  • Online:2010-11-15 Published:2011-08-23

摘要: 目的研究结核分枝杆菌假设蛋白Rv0341编码基因iniB的多态性,确认其保守性,分析依赖利福平结核分枝杆菌(依R菌)在利福平(R)培养管中Rv0341高表达的可能原因。方法用大肠埃希菌做为阴性对照,提取依R菌(14株)、耐R菌(23株)、R敏感的结核分枝杆菌(12株)、结核分枝杆菌标准株H37Rv及BCG(共51株)的细菌基因组DNA,利用PCR自基因组DNA中扩增iniB基因,通过ApaⅠ/EcoRⅤ、KpnⅠ/SmaⅠ双酶切,琼脂糖凝胶电泳检测其带型,对iniB基因进行限制性片段长度多态性分析并测序。结果实验组中iniB基因的酶切图谱完全相同,测序结果亦证实iniB基因无突变。结论 iniB基因在对R依赖、耐药和敏感等不同类型的结核分枝杆菌中是相对保守的;依R菌在Rv0341蛋白表达方面的差异可能是RNA转录差异或利福平诱导的结果。

关键词: 分枝杆菌, 结核, 细菌蛋白质类, 多态性, 限制性诊断长度

Abstract: Objective To investigate the polymorphism and conservatism of iniB gene that encodes the hypothetical protein Rv0341 of M.tuberculosis,find the possible reason that Rv0341 highly expressed when M.tuberculosis was cultured in the medium containing rifampin.Methods E.coli was used as negative control,the iniB genes from 14 rifampin-dependent M.tuberculosis isolates,23 rifampin-resistant isolates,12 rifampin-sensitive isolates,M.tuberculosis H37Rv and BCG were amplified by PCR,and then digested by restriction ...

Key words: M.tuberculosis, bacterial proteins, polymorphism, restriction fragment length