Intestinal Intraepithelial Lymphocytes: Sentinels of the Mucosal Barrier.

Intestinal Intraepithelial Lymphocytes: Sentinels of the Mucosal Barrier.
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DOI:
10.1016/j.it.2017.11.003
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发表时间:
2018-04
影响因子:
16.8
通讯作者:
Van Kaer L
Van Kaer L
中科院分区:
医学1区
文献类型:
--
作者:
Olivares-Villagómez D;Van Kaer L

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肠上皮内淋巴细胞(IEL)是存在于肠上皮细胞(IEC)之间的一个庞大而多样的淋巴样细胞群,形成肠粘膜屏障。尽管IEL生物学传统上关注的是T细胞,但最近的研究已经确定了几种具有有趣特性的tcr阴性IEL亚群。提供了对不同IEL子集的发展,稳态和功能的新见解。其他研究揭示了不同IEL亚群之间复杂的相互作用,IEL和IEC之间的相互作用,IEL与肠上皮外的免疫细胞之间的交流。在这里,我们回顾了IEL在维持粘膜屏障完整性中的前哨功能,以及IEL反应失调如何导致病理。
Intestinal intraepithelial lymphocytes (IEL) are a large and diverse population of lymphoid cells that reside between the intestinal epithelial cells (IEC) that form the intestinal mucosal barrier. Although IEL biology has traditionally focused on T cells, recent studies have identified several subsets of TCR-negative IEL with intriguing properties. New insight into the development, homeostasis and functions of distinct IEL subsets has been provided. Additional studies have revealed intricate interactions between different IEL subsets, reciprocal interactions between IEL and IEC, and communication of IEL with immune cells that reside outside of the intestinal epithelium. Here, we review sentinel functions of IEL in the maintenance of the mucosal barrier integrity, but also how dysregulated IEL responses can contribute to pathology.
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