Chloroquine-treated dendritic cells require STAT1 signaling for their tolerogenic activity.

Chloroquine-treated dendritic cells require STAT1 signaling for their tolerogenic activity.
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氯喹处理的树突状细胞需要STAT1信号传导其耐受性活性。

DOI:
10.1002/eji.201747362
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发表时间:
2018-07
影响因子:
5.4
通讯作者:
Verinaud L
Verinaud L
中科院分区:
医学3区
文献类型:
--
作者:
Thome R;Bonfanti AP;Rasouli J;Mari ER;Zhang GX;Rostami A;Verinaud L

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多发性硬化症(MS)和实验性自身免疫性脑脊髓炎(EAE)是T细胞驱动的中枢神经系统(CNS)自身免疫性疾病,其中产生IL-17的Th17细胞促进损伤并致病。相反,致耐受树突状细胞(DC)诱导调节性T(Treg)细胞并抑制Th17细胞。氯喹(CQ)通过对树突状细胞(DC)的调节抑制EAE,其机制未知。在这里,我们表明信号转导和转录激活因子(STAT)1是CQ诱导的致耐受树突状细胞(TolDC)有效抑制EAE所必需的。我们观察到CQ在体内和体外诱导树突状细胞中STAT1的磷酸化。基因阻断STAT1可抑制CQ处理的DC的抑制活性。我们的发现表明,STAT1是CQ诱导的TolDC的主要信号通路,可能为MS等自身免疫性疾病中TolDCs的诱导提供新的治疗途径。
Multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE) are T cell-driven autoimmune diseases of the central nervous system (CNS) where interleukin (IL)-17-producing Th17 cells promote damage and are pathogenic. Conversely, tolerogenic dendritic cells (DCs) induce regulatory T (Treg) cells and suppress Th17 cells. Chloroquine (CQ) suppresses EAE through the modulation of DCs by unknown mechanisms. Here we show that signal transducer and activator of transcription (STAT) 1 is necessary for CQ-induced tolerogenic DCs (tolDCs) to efficiently suppress EAE. We observed that CQ induces phosphorylation of STAT1 in DCs in vivo and in vitro. Genetic blockage of STAT1 abrogated the suppressive activity of CQ-treated DCs. Our findings show that STAT1 is a major signaling pathway in CQ-induced tolDCs and may shed light on new therapeutic avenues for the induction of tolDCs in autoimmune diseases, such as MS.
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