Dendritic cells, indoleamine 2,3 dioxygenase and acquired immune privilege.

Dendritic cells, indoleamine 2,3 dioxygenase and acquired immune privilege.
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DOI:
10.3109/08830180903349669
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发表时间:
2010-04
影响因子:
5
通讯作者:
Mellor AL
Mellor AL
中科院分区:
医学3区
文献类型:
--
作者:
Huang L;Baban B;Johnson BA 3rd;Mellor AL

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树突状细胞(Dendritic cells,DC)是一种特异性的T细胞免疫刺激细胞。特别地,一些DC抑制T细胞应答,并激活调节性T细胞。在这篇综述中,我们专注于一个强大的反调节途径介导的浆细胞样树突状细胞(pDC)表达的免疫抑制酶吲哚胺2,3双加氧酶(IDO)。表达IDO的pDC抑制效应T细胞应答,激活调节性T细胞,并减弱慢性炎症环境中的促炎应答,所述慢性炎症表现为临床综合征,如感染性、过敏性和自身免疫性疾病、癌症和移植。因此,表达IDO的pDC产生免疫豁免,并提供新的机会来改善多种疾病综合征的免疫治疗。
Dendritic cells (DCs) are specialized to stimulate T cell immunity. Paradoxically some DCs suppress T cell responses, and activate regulatory T cells. In this review we focus on a potent counter-regulatory pathway mediated by plasmacytoid DCs (pDCs) expressing the immunosuppressive enzyme indoleamine 2,3 dioxygenase (IDO). IDO-expressing pDCs inhibit effector T cell responses, activate regulatory T cells, and attenuate pro-inflammatory responses in settings of chronic inflammation that manifest in clinical syndromes such as infectious, allergic and autoimmune diseases, cancer, and transplantation. Thus IDO-expressing pDCs create immune privilege, and provide novel opportunities to improve immunotherapy in multiple disease syndromes.
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