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胞外诱捕网(Extracellular Traps,ETs):先天性免疫细胞第三种杀伤机制
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摘要
胞外诱捕网(extracellular traps,ETs)的释放是近来新发现的一种由DNA和颗粒蛋白组成的先天免疫防御机制。作为继吞噬作用、自噬之后的第三种杀伤机制,大量的研究已经证实ETs在体内外可捕获和杀伤绝大多数的细菌、病毒、真菌和寄生虫,本文对ETs的概念、形成的分子机制以及ETs在宿主防御中的作用进行了简要的介绍,这将对固有免疫细胞防御策略的新认识具有重要的意义。
Extracellular traps(ETs),composed of DNA and granular proteins,is a new innate immune phagocytosis-independent extracellular defence mechanism which was discovered in recent years.As the third killing mechanisms of innate immune cells after phagocytosis and autophagocytosis,ETs can ensnare varied kinds of invading microbes inducing bacteria,virus,fungi,and protozoa to prevent local diffusion and kill them in vitro,and also in vivo.In this review,we will briefly describe the recent progress of the concept and molecular mechanism of ETs,and its role in host defense.This review have substantial significance on the new understanding of defense strategy in innate immune cells.
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