Type II heat-labile enterotoxins: structure, function, and immunomodulatory properties.

Type II heat-labile enterotoxins: structure, function, and immunomodulatory properties.
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DOI:
10.1016/j.vetimm.2012.09.034
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发表时间:
2013-03-15
影响因子:
1.8
通讯作者:
Connell TD
Connell TD
中科院分区:
农林科学3区
文献类型:
--
作者:
Hajishengallis G;Connell TD

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大肠杆菌和霍乱弧菌的热不稳定肠毒素(hlt)根据其遗传、生化和免疫学特性可分为两大类。I型和II型HLT因其特别强的辅助活性而被广泛研究。尽管总体结构相似,这些分子,在完整或衍生(无毒)形式下,在其免疫调节作用模式上表现出显着差异。直到最近,这些差异的分子基础在很大程度上仍未被描述。本文综述了II型hlt及其免疫调节特性,这些特性主要依赖于与独特的神经节苷和toll样受体的相互作用,而I型hlt不利用这些相互作用。
The heat-labile enterotoxins (HLTs) of Escherichia coli and Vibrio cholerae are classified into two major types on the basis of genetic, biochemical, and immunological properties. Type I and Type II HLT have been intensively studied for their exceptionally strong adjuvant activities. Despite general structural similarities, these molecules, in intact or derivative (non-toxic) forms, display notable differences in their mode of immunomodulatory action. The molecular basis of these differences has remained largely uncharacterized until recently. This review focuses on the Type II HLTs and their immunomodulatory properties which depend largely on interactions with unique gangliosides and Toll-like receptors that are not utilized by the Type I HLTs.
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