中国畜牧兽医

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巴尔通体体外侵染巨噬细胞特性研究

白雅洁,洪杰华,袁聪俐   

  1. (上海交通大学农业与生物学院,上海  200240

  • 收稿日期:2013-11-12 出版日期:2014-05-20 发布日期:2014-06-25
  • 通讯作者: 袁聪俐(1981—),男,上海人,研究方向:巴尔通体感染致病机理。 E-mail: ycl@sjtu.edu.cn;Tel:021-34205779
  • 作者简介:白雅洁(1989—),女,浙江人,硕士,研究方向:巴尔通体感染调控宿主巨噬细胞极化反应。
  • 基金资助:

    上海自然基金(12ZR1414000);教育部博士点新教师基金(20120073120068)。

Study on Characteristic of Bartonella infecting Macrophage in vitro

BAI Ya-jie,HONG Jie-hua,YUAN Cong-li   

  1. (School of Agriculture BiologyShanghai Jiaotong University, Shanghai 200240China)

  • Received:2013-11-12 Online:2014-05-20 Published:2014-06-25

摘要: 巴尔通体(Bartonella)是一类革兰氏阴性、营养需求苛刻的兼性胞内需氧菌,感染导致人类罹患猫抓病及杆菌样血管瘤。组织病理学研究结果发现淋巴结内存在大量巴尔通体,提示巴尔通体具有能逃避宿主先天免疫吞噬的功能。然而目前关于巴尔通体与巨噬细胞间相互作用的研究尚未深入开展。本研究利用鼠源巴尔通体(Bartonella tribocorum)体外感染J774A、RAW264.7及C57小鼠腹腔巨噬细胞,探索巴尔通体在巨噬细胞内存活特性。免疫荧光试验结果显示巨噬细胞能有效吞噬巴尔通体,细胞形态未发生显著变化。庆大霉素保护试验结果证实被吞噬的巴尔通体在不同巨噬细胞内均能增殖及存活至48 h,且能在LPS诱导活化的巨噬细胞中存活。

关键词:

巴尔通体; 巨噬细胞; 抗吞噬

Abstract: Bartonella was fastidious gram-negative bacterium, which could cause cat-scratch disease and bacillary angiomatosis in human. Histopathology studies showed that lots of free Bartonella in infected lymph nodes, which indicated that Bartonella was able to escape from host innate immunity or phagocytosis. However, the interaction between Bartonella and macrophage had not been well demonstrated. Here, intracellular survivals of Bartonella tribocorum in J774A,RAW267.4 and C57 mouse peritoneal macrophage were investigated. Gentamycin protection assay demonstrated Bartonella could replicate and survive in 48 hours post infection in J774A, RAW264.7 and C57 mouse peritoneal macrophages, even in LPS induced macrophages.

Key words:

Bartonellamacrophageantimso-bidi-font-family: 宋体" lang="EN-US">-phagocytosis