Enterovirus-infected β-cells induce distinct response patterns in BDCA1+ and BDCA3+ human dendritic cells.

Enterovirus-infected β-cells induce distinct response patterns in BDCA1+ and BDCA3+ human dendritic cells.
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DOI:
10.1371/journal.pone.0121670
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Adema GJ
Adema GJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Schulte BM;Gielen PR;Kers-Rebel ED;Schreibelt G;van Kuppeveld FJ;Adema GJ

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肠道病毒通常引起轻度疾病,但也与自身免疫性糖尿病的发展有关。树突状细胞(DC)形成先天性和适应性免疫应答,包括抗病毒应答。不同的人类DC亚群如何形成抗病毒反应,它们是否具有互补或重叠的功能,以及这与自身免疫反应的关系在很大程度上是未知的。我们使用肠道病毒感染的β细胞和新鲜分离的人髓样DC(mDC)亚群作为自身免疫性1型糖尿病的模型。我们的数据显示,BDCA 1+和BDCA 3 + mDC亚群均吞噬模拟细胞以及病毒感染的β细胞,尽管BDCA 1 + mDC更有效。摄取肠道病毒感染,但不是模拟感染的细胞,激活两个DC亚群的共刺激分子的诱导和分泌的I型和III型干扰素。两个亚群产生相似量的干扰素-α,但BDCA 3 + DC在IFN-λ产生方面具有上级优势。与BDCA 3 + DC相比,BDCA 1 + mDC更强烈地上调PD-L1,并且在IL-12和IL-10产生方面具有上级优势。尽管BDCA 3 + DC缺乏IL-12的产生,但BDCA 1+和BDCA 3 + DC都在同种异体混合淋巴细胞反应中激活T细胞,使其具有Th 1型反应性,同时抑制Th 2相关细胞因子。
Enteroviruses often cause mild disease, yet are also linked to development of autoimmune diabetes. Dendritic cells (DCs) shape both innate and adaptive immune responses, including anti-viral responses. How different human DC subsets shape anti-viral responses, whether they have complementary or overlapping functions and how this relates to autoimmune responses is largely unknown. We used enterovirus-infected β-cells and freshly isolated human myeloid DC (mDC) subsets as a model for autoimmune type 1 diabetes. Our data show that both the BDCA1+ and BDCA3+ mDC subsets engulf mock- as well as virus-infected β-cells, albeit BDCA1+ mDCs are more efficient. Uptake of enterovirus-infected, but not mock-infected cells, activated both DC subsets as indicated by the induction of co-stimulatory molecules and secretion of type I and type III interferons. Both subsets produced similar amounts of interferon-α, yet the BDCA3+ DC were superior in IFN-λ production. The BDCA1+ mDCs more strongly upregulated PD-L1, and were superior in IL-12 and IL-10 production as compared to the BDCA3+ DC. Despite lack of IL-12 production by the BDCA3+ DC, both BDCA1+ and BDCA3+ DCs activated T cells in allogeneic mixed lymphocyte reaction towards a Th1-type reactivity while suppressing Th2-associated cytokines.
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