Regulatory T cells and Toll-like receptors: what is the missing link?

Regulatory T cells and Toll-like receptors: what is the missing link?
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DOI:
10.1016/j.intimp.2009.01.027
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发表时间:
2009-05
影响因子:
5.6
通讯作者:
Li Z
Li Z
中科院分区:
医学2区
文献类型:
--
作者:
Dai J;Liu B;Li Z

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Toll样受体是微生物产物的重要感受器,在启动针对病原体的先天免疫和获得性免疫防御中起着重要作用。新的证据表明,调节性T细胞(Treg)也表达TLRs,它是一种重要的免疫抑制细胞机制,可以抑制TLR的过度活动,从而避免脓毒症和自身免疫性疾病。本文就TLR在Treg上的表达以及TLR激活对Treg生物学功能的影响作一综述。我们认为,Treg的抑制功能可以根据TLR刺激的性质而增强或减弱。
Toll-like receptors (TLRs) are critical sensors for microbial products and are important in initiating both innate and adaptive immune defense against pathogens. Emerging evidence suggests that TLRs are also expressed by regulatory T cells (Treg) that constitute an important immune suppressive cellular mechanism to curtail TLR hyperactivity to avoid sepsis and autoimmune diseases. This review brings up to date on the expression of functional TLRs on Treg and the functional impact of TLR activation on Treg biology. We argue that the suppressive function of Treg can be augmented or attenuated depending on the nature of TLR stimulation.
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