Homeostasis and function of regulatory T cells in aging.

Homeostasis and function of regulatory T cells in aging.
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DOI:
10.1016/j.coi.2012.04.005
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发表时间:
2012-08
影响因子:
7
通讯作者:
Chougnet CA
Chougnet CA
中科院分区:
医学2区
文献类型:
--
作者:
Raynor J;Lages CS;Shehata H;Hildeman DA;Chougnet CA

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衰老的一个标志是免疫功能的逐渐恶化。与艾滋病相关的免疫抑制增加了对传染病和癌症的易感性,这是老年人发病率和死亡率的重要原因。特别是,年龄相关的T细胞功能障碍是“免疫衰老”的主要贡献者。最近,已经清楚的是,调节性T细胞(Treg)的频率在老年小鼠和人类中显着增加。由于Treg控制T细胞反应的强度,它们的增加可能导致年龄相关的免疫功能障碍。本文就调节性T细胞在衰老过程中的动态平衡和功能机制作一综述。
A hallmark of aging is the progressive deterioration of immune function. Age-related immune suppression increases susceptibility to infectious diseases and cancer, significant causes of morbidity and mortality in the elderly. In particular, age-related T cell dysfunction is a major contributor to “immune-senescence”. Recently, it has become clear that the frequency of regulatory T cells (Treg) significantly increases in aged mice and humans. As Treg control the intensity of T cell responses, their accrual likely contributes to age-related immune dysfunction. This review will focus on mechanisms underlying Treg homeostasis and function in aging.
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