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首页> 外文期刊>Nature immunology >Mouse type I IFN-producing cells are immature APCs with plasmacytoid morphology
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Mouse type I IFN-producing cells are immature APCs with plasmacytoid morphology

机译:小鼠I型产生IFN的细胞是具有浆细胞样形态的未成熟APC

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摘要

We show here that mouse interferon-α (IFN-α)-producing cells (mIPCs) are a unique subset of immature antigen-presenting cells (APCs) that secrete IFN-α upon stimulation with viruses. mIPCs have a plasmacytoid morphology, can be stained with an antibody to Ly6G and Ly6C (anti-Ly6G/C)and are Ly6C~+B220~+CDIIc~(10)CD4~+; unlike other dendritic cell subsets, however, they do not express CD8α or CDIIb. Although mIPCs undergo apoptosis in vitro, stimulation with viruses, IFN-α or CpG oligonucleotides enhanced their survival and T cell stimulatory activity. In vivo, mIPCs were the main producers of IFN-α in cytomegalovirus-infected mice, as depletion of Ly6G~+/C~+ cells abrogated IFN-α production. mIPCs produced interleukin 12 (IL-12) in response to viruses and CpG oligodeoxynucleotides, but not bacterial products. Although different pathogens can selectively engage various APC subsets for IL-12 production, IFN-α production is restricted to mIPCs' response to vial infection.
机译:我们在这里显示,小鼠干扰素-α(IFN-α)产生细胞(mIPCs)是不成熟的抗原呈递细胞(APC)的独特子集,该病毒在受到病毒刺激后会分泌IFN-α。 mIPC具有浆细胞样形态,可用Ly6G和Ly6C抗体(抗Ly6G / C)染色,为Ly6C〜+ B220〜+ CDIIc〜(10)CD4〜+。与其他树突状细胞亚群不同,它们不表达CD8α或CDIIb。尽管mIPC在体外经历凋亡,但病毒,IFN-α或CpG寡核苷酸的刺激可提高其存活率和T细胞刺激活性。在体内,mIPC是巨细胞病毒感染小鼠的主要IFN-α产生者,因为Ly6G〜+ / C〜+细胞的消耗消除了IFN-α的产生。 mIPC对病毒和CpG寡脱氧核苷酸产生了白介素12(IL-12),但对细菌产物没有反应。尽管不同的病原体可以选择性地使各种APC亚型参与IL-12的产生,但IFN-α的产生仅限于mIPC对小瓶感染的反应。

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