Leishmania interferes with host cell signaling to devise a survival strategy.

Leishmania interferes with host cell signaling to devise a survival strategy.
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DOI:
10.1155/2010/109189
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发表时间:
2010
影响因子:
--
通讯作者:
Saha B
Saha B
中科院分区:
其他
文献类型:
--
作者:
Bhardwaj S;Srivastava N;Sudan R;Saha B

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原生动物寄生虫利什曼原虫属。在其载体中作为细胞外前鞭毛体存在,而它在哺乳动物宿主的巨噬细胞内作为无鞭毛体驻留和复制。作为一种生存策略,利什曼原虫直接或间接调节巨噬细胞功能。直接干扰包括防止氧化爆发和导致氧化爆发消除的效应器功能。间接效应包括抗原呈递和 T 细胞功能调节,效应 T 细胞通过巨噬细胞失活帮助寄生虫生存。大多数这些直接和间接效应是由宿主细胞受体信号传导调节的,这些信号传导是通过激酶和磷酸酶级联中的磷酸化和去磷酸化循环而发生的。这篇综述强调了利什曼原虫如何选择性地操纵不同的信号通路以确保其生存。
The protozoan parasite Leishmania spp. exists as extracellular promastigotes in its vector whereas it resides and replicates as amastigotes within the macrophages of its mammalian host. As a survival strategy, Leishmania modulates macrophage functions directly or indirectly. The direct interference includes prevention of oxidative burst and the effector functions that lead to its elimination. The indirect effects include the antigen presentation and modulation of T cell functions in such a way that the effector T cells help the parasite survive by macrophage deactivation. Most of these direct and indirect effects are regulated by host cell receptor signaling that occurs through cycles of phosphorylation and dephosphorylation in cascades of kinases and phosphatases. This review highlights how Leishmania selectively manipulates the different signaling pathways to ensure its survival.
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