Nature:阿米巴虫能啃小肠细胞 破坏小肠粘膜

2014-05-26 natureasia natureasia

Entamoeba histolytica是发展中国家儿童致命腹泻病的致病病原体,之所以这样来命名是因为它能够破坏宿主组织,尽管该效应的机制并不清楚。 Katherine Ralston等人在这篇论文中介绍了这些阿米巴虫是怎样通过咬下一块细胞并将其消化来杀死小肠上皮细胞的,这样一个过程让人想起免疫细胞之间的“胞啃”现象。将咬下的碎块消化是杀死细胞所必需的,这个机制在组织培养中和在小肠外植体的入侵

Entamoeba histolytica是发展中国家儿童致命腹泻病的致病病原体,之所以这样来命名是因为它能够破坏宿主组织,尽管该效应的机制并不清楚。

Katherine Ralston等人在这篇论文中介绍了这些阿米巴虫是怎样通过咬下一块细胞并将其消化来杀死小肠上皮细胞的,这样一个过程让人想起免疫细胞之间的“胞啃”现象。将咬下的碎块消化是杀死细胞所必需的,这个机制在组织培养中和在小肠外植体的入侵过程中都发挥作用。

作者提出,通过“胞啃”所发生的细胞间交换在演化上可能要比以前所假设的更古老、更普遍。这项研究还显示,阿米巴“胞啃”是用来治疗阿米巴病(一种被忽视的重要疾病)的新药的一个潜在目标。

原始出处:

Ralston KS, Solga MD, Mackey-Lawrence NM, Somlata, Bhattacharya A, Petri WA Jr.Trogocytosis by Entamoeba histolytica contributes to cell killing and tissue invasion.Nature. 2014 Apr 24;508(7497):526-30

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