IL-10-producing intestinal macrophages prevent excessive antibacterial innate immunity by limiting IL-23 synthesis.

IL-10-producing intestinal macrophages prevent excessive antibacterial innate immunity by limiting IL-23 synthesis.
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IL-10产生的肠道巨噬细胞通过限制IL-23合成来防止过度的抗菌先天免疫。

DOI:
10.1038/ncomms8055
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发表时间:
2015-05-11
影响因子:
16.6
通讯作者:
Murai, Masako
Murai, Masako
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Krause, Petra;Morris, Venetia;Greenbaum, Jason A.;Park, Yoon;Bjoerheden, Unni;Mikulski, Zbigniew;Muffley, Tracy;Shui, Jr-Wen;Kim, Gisen;Cheroutre, Hilde;Liu, Yun-Cai;Peters, Bjoern;Kronenberg, Mitchell;Murai, Masako

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先天免疫反应在肠道中受到调节,以防止过度炎症。在这里,我们展示了小鼠结肠巨噬细胞的一个子集组成型产生抗炎细胞因子 IL-10。在感染啮齿类柠檬酸杆菌(人类肠道致病性大肠杆菌感染的模型)的小鼠中,这些巨噬细胞是预防肠道病理所必需的。在骨髓细胞特异性删除 IL-10 的感染小鼠中,IL-23 显着增加,并且添加 IL-10 会减少肠道巨噬细胞产生 IL-23。此外,在巨噬细胞 IL-10 缺乏的情况下,阻断 IL-23 可以降低死亡率。转录组和其他分析表明表达 IL-10 的巨噬细胞接收自分泌 IL-10 信号。有趣的是,只有转移 IL-10 阳性巨噬细胞才能拯救 IL-10 缺陷的感染小鼠。因此,这些数据表明肠道巨噬细胞持续产生IL-10,在控制过度的先天免疫激活和预防急性细菌感染后的组织损伤方面发挥着关键作用。
Innate immune responses are regulated in the intestine to prevent excessive inflammation. Here we show that a subset of mouse colonic macrophages constitutively produce the anti-inflammatory cytokine IL-10. In mice infected with Citrobacter rodentium, a model for enteropathogenic Escherichia coli infection in humans, these macrophages are required to prevent intestinal pathology. IL-23 is significantly increased in infected mice with a myeloid cell-specific deletion of IL-10, and the addition of IL-10 reduces IL-23 production by intestinal macrophages. Furthermore, blockade of IL-23 leads to reduced mortality in the context of macrophage IL-10 deficiency. Transcriptome and other analyses indicate that IL-10-expressing macrophages receive an autocrine IL-10 signal. Interestingly, only transfer of the IL-10 positive macrophages could rescue IL-10 deficient infected mice. Therefore, these data indicate a pivotal role for intestinal macrophages that constitutively produce IL-10, in controlling excessive innate immune activation and preventing tissue damage after an acute bacterial infection.
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