首都医科大学学报 ›› 2011, Vol. 32 ›› Issue (3): 346-351.

• 传染病及相关慢性疾病研究进展 • 上一篇    下一篇

北京基因型结核分枝杆菌感染THP-1细胞系表达谱的研究

李卫民1,黄海荣1,高峰3,刘毅2,范伟兴3,戴广明1,姜广路1,宋小运1
赵立平1,付玉红1
  

  1. 1. 首都医科大学附属北京胸科医院国家结核病临床实验室,北京 101149; 2. 首都医科大学附属北京胸科医院细菌免疫研究室,北京 101149; 3. 国家动物流行病学中心,青岛 266032
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-21 发布日期:2011-06-21

Expression profiling of Mycobacterium tuberculosis Beijing genotype invadingTHP-1 cell line

LI Wei-min1, HUANG Hai-rong1, GAO Feng3, LIU Yi2, FAN Wei-xing3, DAI Guang-ming1, JIANG Guang-lu1, SONG Xiao-yun1, ZHAO Li-ping1, FU Yu-hong1
  

  1. 1. Chinese Tuberculosis Clinical Lab, Beijing Chest Hospital, Beijing 101149, China; 2. Department of Immunology and Bacteriology,Beijing Chest Hospital, Beijing 101149, China; 3. China Animal Health and Epidemiology Center, Qingdao 266032, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-21 Published:2011-06-21

摘要: 目的 通过分析不同结核分枝杆菌感染巨噬细胞后表达谱的改变,探讨结核病(tuberculosis,TB),尤其是北京基因型结核分枝杆菌(Mycobacterium tuberculosis M.tb)感染的结核病免疫发病机制。
方法 具有IS6110 DNA RFLP和Spoligotyping基因分型结果的265株北京基因型结核分枝杆菌(简称M.tb Beijing genotype)鉴定自2000年中国结核病流行病学抽样调查(简称2000年流调),采用平均连锁方法计算北京基因型结核分枝杆菌中心菌。结核分枝杆菌(M.tb H37Rv)、牛分枝杆菌(M. bovis)标准菌株和M.tb Beijing genotype感染THP-1细胞,采用基因芯片分析其表达谱的改变。结果输入MAS系统,行进一步的分析。
结果 依据计算原则, 相似系数最大为0.514,其对应菌株为结核分枝杆菌北京基因型中心菌株。分枝杆菌感染THP1细胞后相应的芯片结果具有可靠性和可分析性。M.tb H37RvM.bovisM.tb Beijing genotype感染THP-1细胞的共同表达293个基因。共同表达基因的GO和pathway分析,发现一些不为人特别关注,但对结核免疫有一定作用的信号通路,例如B细胞受体信号通路。M.tb H37RvM.tb Beijing genotype感染THP-1细胞差异表达基因包括:tnf,tnfrsf 9pim-1icam-1cd48
结论 2000年结核病流调以中国人口为整体,采用分层整群随机抽样。因此获得的M.tb Beijing genotype中心菌株具有中国代表性。293个基因可作为筛选用于菌阴结核病诊断的候选靶标。对这些差异表达基因涉及的信号通路,例如:JAK-STAT信号通路和自然杀伤细胞介导的细胞毒性以及TNF的深入分析,将对理解M.tb Beijing genotype免疫毒性特征有益。

关键词: 结核分枝杆菌, 北京基因型, 基因芯片, 表达谱

Abstract: Objective To explore immunologic mechanism in pathogensis relevant to tuberculosis(TB), especially caused by Mycobacterium tuberculosis(M.tb) Beijing genotype by analyzing the different expression profile of cells infected.
Methods IS6110 DNA RFLP and Spoligotyping patterns of 265 M.tb Beijing Genotype isolates from a nationwide random survey for the epidemiology of TB in China in 2000 were calculated using the average linkage to get a central strain of M.tb Beijing genotype (referred to as M. tb Beijing genotype). THP-1 cells were infected with M.tb, M.bovis and M. tb Beijing genotype, the expression profile was analyzed using gene chips. Furthermore the results were evaluated by MAS system.
Results The central strain of M.tb Beijing genotype was determined on the maximum coefficient(0.514) by the formula. There were some different expression genes(tnf, tnfsf 9, pim-1, icam-1 and cd48) by THP-1 cell infected between M.tb H37Rv and M. tb Beijing genotype.
Conclusion The central strain of M.tb Beijing genotype was of Chinese representation. The result of microarray analysis of the infected cells was reliable and analyzable; 293 genes were common expressed from the THP-1 cell infected by M.tb H37Rv, M.bovis and the M. tb Beijing genotype.

Key words: mycobacterium tuberculosis, Beijing genotype, gene microarray, expression profile

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