Thymic stromal cells: Roles in atrophy and age-associated dysfunction of the thymus.

Thymic stromal cells: Roles in atrophy and age-associated dysfunction of the thymus.
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胸腺基质细胞:在胸腺萎缩和年龄相关功能障碍中的作用。

DOI:
10.1016/j.exger.2017.12.022
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发表时间:
2018-05
影响因子:
3.9
通讯作者:
Griffith AV
Griffith AV
中科院分区:
医学2区
文献类型:
--
作者:
Cepeda S;Griffith AV

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胸腺是T淋巴细胞产生的主要部位,胸腺萎缩是免疫系统衰老的一个标志。与年龄相关的胸腺萎缩导致新的初始T细胞输出减少,其免疫后遗症包括对新型病原体挑战和疫苗的反应减弱,以及肿瘤监测能力下降。尽管已知多种刺激可调节短暂性胸腺萎缩,但控制与年龄相关的渐进性萎缩的机制一直难以阐明。这在一定程度上是因为与年龄相关的胸腺萎缩的主要靶点之一是相对稀少的群体——胸腺基质细胞。这篇综述重点关注衰老过程中胸腺基质细胞的变化以及胸腺萎缩的周期性、随机性和渐进性原因的影响。
Atrophy of the thymus, the primary site of T lymphocyte generation, is a hallmark of the aging immune system. Age-associated thymic atrophy results in diminished output of new, naïve T cells, with immune sequelae that include diminished responses to novel pathogenic challenge and vaccines, as well as diminished tumor surveillance. Although a variety of stimuli are known to regulate transient thymic atrophy, mechanisms governing progressive age-associated atrophy have been difficult to resolve. This has been due in part to the fact that one of the primary targets of age-associated thymic atrophy is a relatively rare population, thymic stromal cells. This review focuses on changes in thymic stromal cells during aging and on the contributions of periodic, stochastic, and progressive causes of thymic atrophy.
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发表时间: 2012-04-06
期刊: Science (New York, N.Y.)
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