摘要
目的:探讨不同毒力的结核杆菌分别感染小鼠肺泡巨噬细胞后铁蛋白(Fn)和铁转运蛋白(FPN)表达量及其时相性变化。方法:利用制备的结核杆菌国际标准强毒株H37Rv株(以下简称H37Rv株)和卡介苗菌株(以下简称BCG)菌悬液,分别经小鼠尾静脉注射,建立各组小鼠感染模型。各组小鼠感染模型建立成功后,分别于第1、3、5、7、9、11、13、15天,进行肺泡灌洗,收集小鼠肺泡灌洗液,获取各组小鼠肺泡巨噬细胞。应用ELISA方法检测各组感染组小鼠肺泡巨噬细胞中Fn和FPN的表达含量;应用Western blot技术检测上述时间点各组感染的小鼠肺泡巨噬细胞内Fn的表达量。结果:用ELISA方法和Western blot技术检测各组小鼠肺泡巨噬细胞内Fn表达,结果显示:于模型建成后第7、9、11天,H37Rv株组与BCG组的小鼠肺泡巨噬细胞内Fn表达量明显减低,并且于第7天时表达量最低,差异有统计学意义(P<0.05)。利用ELISA方法检测各组小鼠肺泡巨噬细胞内FNP的表达,结果显示:不同毒力的结核杆菌菌株感染小鼠肺泡巨噬细胞后,各感染组内小鼠肺泡巨噬细胞FPN随处理时间延长表达逐渐降低;于感染第5天开始下降明显,第7、9天最低。H37Rv株组和BCG组表达接近,于第5、7、9天明显低于正常对照组FPN的表达量,差异有统计学意义(P<0.05)。结论:结核杆菌感染导致巨噬细胞内Fn与FPN的表达均降低,并且感染巨噬细胞Fn和FPN的表达与结核杆菌的毒力强弱关系无相关性。
Objective：To discuss the change of ferritin （ Fn） and ferroportin expression quantity and time-related feature in the alveolar macrophages of mice , infected with different virulence of Mycobacterium Tuberculosis infected .Methods：The prepared bacte-ria of H37Rv or BCG were injected intravenously into the mice tails .On the day 1, 3, 5, 7, 9, 11, 13 and 15, the lavage fluids were collected and the alveolar macrophages were obtained from each group of mice .The expression of FPN and Fn were detected with ELISA and /or Western blot analysis .Results：The expression of Fn in the group of either H 37Rv or BCG infected mice was decreased on the day 7, 9 and 11, and was lowest on the day 7, which showed significantly statistical difference compared to that on the other days （P〈0.05）.The expression of FNP in the infected mouse macrophage was decreased gradually , which was obvious on the day 5. The expression levels reached to the lowest on the day 7 and 9.The expression was much lower than that in the negative control group （P〈0.05）.Conclusion：The expression of Fn and FPN in macrophages isolated from lungs of mice infected with Mycobacterium tu -berculosis H37Rv or BCG become decreased , and there is no difference between these two infected mouse groups .
出处
《中国免疫学杂志》
CAS
CSCD
北大核心
2014年第5期591-595,共5页
Chinese Journal of Immunology
基金
国家自然科学基金资助项目(No.81260261
81160192
81260241
81160001)
新疆生产建设兵团医药专项资金资助项目(No.2012BA022)
关键词
结核杆菌
巨噬细胞
铁蛋白
铁转运蛋白
Mycobacterium tuberculosis
Macrophage
Ferritin
Ferroportin
