Interleukin-2 at the crossroads of effector responses, tolerance, and immunotherapy.

Interleukin-2 at the crossroads of effector responses, tolerance, and immunotherapy.
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DOI:
10.1016/j.immuni.2013.01.004
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发表时间:
2013-01-24
期刊:
影响因子:
32.4
通讯作者:
Leonard WJ
Leonard WJ
中科院分区:
医学1区
文献类型:
--
作者:
Liao W;Lin JX;Leonard WJ

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Interleukin-2 是抗原激活后产生的多效细胞因子,在免疫反应中发挥关键作用。作为一种 T 细胞生长因子,IL-2 还可促进 CD8+ T 细胞和 NK 细胞的细胞溶解活性,并调节响应抗原的 T 细胞分化程序,促进初始 CD4+ T 细胞分化为 T 辅助细胞 1 (Th1) 和 T 辅助细胞 2 (Th2) 细胞,同时抑制 T 辅助细胞 17 (Th17) 和 T 滤泡辅助细胞 (Tfh) 细胞分化。此外,IL-2 对于调节性 T 细胞 (Treg) 的发育和维持以及激活诱导的细胞死亡至关重要,从而介导耐受性并限制不适当的免疫反应。在这篇综述中,我们重点关注 IL-2 的分子机制和复杂的细胞作用、其与其他细胞因子的协同和对抗作用,以及如何在临床医学中利用促进和阻断 IL-2 的作用。
Interleukin-2 is a pleiotropic cytokine produced after antigen activation that plays pivotal roles in the immune response. Discovered as a T-cell growth factor, IL-2 additionally promotes CD8+ T cell and NK cell cytolytic activity, and modulates T cell differentiation programs in response to antigen, promoting naïve CD4+ T cell differentiation into T helper-1 (Th1) and T helper-2 (Th2) cells while inhibiting T helper-17 (Th17) and T follicular helper (Tfh) cell differentiation. Moreover, IL-2 is essential for the development and maintenance of T regulatory (Treg) cells and for activation-induced cell death, thereby mediating tolerance and limiting inappropriate immune reactions. In this review, we focus on the molecular mechanisms and complex cellular actions of IL-2, its cooperative and opposing effects with other cytokines, and how both promoting and blocking the actions of IL-2 are being utilized in clinical medicine.
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