Altered phenotype and function of blood dendritic cells in multiple sclerosis are modulated by IFN‐β and IL‐10

Altered phenotype and function of blood dendritic cells in multiple sclerosis are modulated by IFN‐β and IL‐10
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多发性硬化症中血液树突状细胞表型和功能的改变受 IFN-β 和 IL-10 的调节

DOI:
10.1046/j.1365-2249.2001.01504.x
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发表时间:
2001
影响因子:
4.6
通讯作者:
H. Link
H. Link
中科院分区:
医学3区
文献类型:
--
作者:
Ym Huang;N. Stoyanova;Y.‐P. Jin;N. Teleshova;Y. Hussien;B. Xiao;S. Fredrikson;H. Link

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多发性硬化症(MS)被认为是由自身攻击性T细胞介导的免疫反应引起的,其中T辅助1型(Th 1)细胞产生细胞因子,例如IFN-γ和光毒素促进少突胶质细胞髓鞘单位的损伤。树突状细胞(Dendritic cells,DCs)是一种有效的抗原提呈细胞,可启动和协调免疫应答.在MS中,DC的表型和Th 1细胞促进功能是否改变尚不清楚。这项研究表明,来自MS患者的血液来源的DC表达低水平的共刺激分子CD 86。此外,来源于MS患者的DC强烈增强了血液单核细胞(MNC)产生IFN-γ。IFN-β和IL-10抑制DC在混合淋巴细胞反应(MLR)中的共刺激能力,并显示出对DC产生IL-12的抑制作用。相应地,用IFN-β和IL-10预处理的DC显著抑制了MNC产生IFN-γ。IFN-β在体外也上调DC上的CD 80,特别是CD 86表达。在体外,抗CD 80抗体显著增加MLR中DC诱导的IL-4产生,而抗CD 86抗体抑制DC诱导的IL-4产生。我们的结论是,DC表型和功能在MS中发生了改变,这意味着Th 1偏向的反应具有增强的诱导Th 1细胞因子产生的能力。通过IFN-β和IL-10体外修饰MS患者的DC可能代表了一种新的免疫调节方式,并可能对MS的未来免疫治疗有用。
Multiple sclerosis (MS) is assumed to result from autoaggressive T cell‐mediated immune responses, in which T helper type 1 (Th1) cells producing cytokines, e.g. IFN‐γ and lymphotoxin promote damage of oligodendrocyte‐myelin units. Dendritic cells (DCs) as potent antigen presenting cells initiate and orchestrate immune responses. Whether phenotype and function of DCs with respect to Th1 cell promotion are altered in MS, are not known. This study revealed that blood‐derived DCs from MS patients expressed low levels of the costimulatory molecule CD86. In addition, production of IFN‐γ by blood mononuclear cells (MNCs) was strongly enhanced by DCs derived from MS patients. IFN‐β and IL‐10 inhibited the costimulatory capacity of DCs in mixed lymphocyte reaction (MLR) and showed additive effects on suppression of IL‐12 production by DCs. Correspondingly, DCs pretreated with IFN‐β and IL‐10 significantly suppressed IFN‐γ production by MNCs. IFN‐β in vitro also upregulated CD80 and, in particular, CD86 expression on DCs. In vitro, anti‐CD80 antibody remarkably increased, while anti‐CD86 antibody inhibited DC‐induced IL‐4 production in MLR. We conclude that DC phenotype and function are altered in MS, implying Th1‐biased responses with enhanced capacity to induce Th1 cytokine production. In vitro modification of MS patients' DCs by IFN‐β and IL‐10 could represent a novel way of immunomodulation and of possible usefulness for future immunotherapy of MS.
I 型 IFN 抑制人树突状细胞 IL-12 的产生和 Th1 细胞的发育。
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期刊: Journal of immunology (Baltimore, Md. : 1950)
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