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IL-2 and IL-15 dependent thymic development of Foxp3-expressing regulatory T lymphocytes

机译:表达Foxp3的调节性T淋巴细胞的IL-2和IL-15依赖性胸腺发育

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摘要

Immunosuppressive regulatory T lymphocytes (Treg) expressing the transcription factor Foxp3 play a vital role in the maintenance of tolerance of the immune-system to self and innocuous non-self. Most Treg that are critical for the maintenance of tolerance to self, develop as an independent T-cell lineage from common T cell precursors in the thymus. In this organ, their differentiation requires signals from the T cell receptor for antigen, from co-stimulatory molecules, as well as from cytokine-receptors. Here we focus on the cytokines implicated in thymic development of Treg, with a particular emphasis on the roles of interleukin-2 (IL-2) and IL-15. The more recently appreciated involvement of TGF-β in thymic Treg development is also briefly discussed. Finally, we discuss how cytokine-dependence of Treg development allows for temporal, quantitative, and potentially qualitative modulation of this process.
机译:表达转录因子Foxp3的免疫抑制调节性T淋巴细胞(Treg)在维持免疫系统对自身和无害非自身免疫的耐受性中起着至关重要的作用。对于维持自身耐受性至关重要的大多数Treg,都是从胸腺中常见的T细胞前体发育成独立的T细胞谱系。在这个器官中,它们的分化需要来自T细胞受体的抗原,共刺激分子以及细胞因子受体的信号。在这里,我们专注于涉及Treg的胸腺发育的细胞因子,尤其着重于白介素2(IL-2)和IL-15的作用。还简要讨论了TGF-β在胸腺Treg发育中的作用。最后,我们讨论了细胞因子对Treg发育的依赖性如何允许该过程的时间,定量和潜在的定性调节。

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