Maturation, activation, and protection of dendritic cells induced by double-stranded RNA.

Maturation, activation, and protection of dendritic cells induced by double-stranded RNA.
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DOI:
10.1084/jem.189.5.821
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发表时间:
1999-03-01
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Lanzavecchia A
Lanzavecchia A
中科院分区:
其他
文献类型:
--
作者:
Cella M;Salio M;Sakakibara Y;Langen H;Julkunen I;Lanzavecchia A

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免疫应答的启动关键取决于树突状细胞(DC)的活化。这一过程是由表面受体触发的炎症细胞因子或保守的模式特征的感染性病原体。在这里,我们表明,人类树突状细胞被激活的流感病毒感染和双链(ds)RNA。这种活化不仅导致抗原呈递和T细胞刺激能力增加,而且导致对病毒致细胞病变效应的抗性,这是由I型干扰素的产生和MxA的上调介导的。由于dsRNA刺激成熟和抗性,DC可以充当能够维持病毒抗原产生的利他性抗原呈递细胞,同时获得触发幼稚T细胞和驱动极化T辅助细胞1型应答的能力。
The initiation of an immune response is critically dependent on the activation of dendritic cells (DCs). This process is triggered by surface receptors specific for inflammatory cytokines or for conserved patterns characteristic of infectious agents. Here we show that human DCs are activated by influenza virus infection and by double-stranded (ds)RNA. This activation results not only in increased antigen presentation and T cell stimulatory capacity, but also in resistance to the cytopathic effect of the virus, mediated by the production of type I interferon, and upregulation of MxA. Because dsRNA stimulates both maturation and resistance, DCs can serve as altruistic antigen-presenting cells capable of sustaining viral antigen production while acquiring the capacity to trigger naive T cells and drive polarized T helper cell type 1 responses.
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