Innate immunity in the retina: Toll-like receptor (TLR) signaling in human retinal pigment epithelial cells.

Innate immunity in the retina: Toll-like receptor (TLR) signaling in human retinal pigment epithelial cells.
复制标题

DOI:
10.1016/j.jneuroim.2004.04.018
复制
发表时间:
2004-08
影响因子:
3.3
通讯作者:
Detrick B
Detrick B
中科院分区:
医学4区
文献类型:
--
作者:
Kumar MV;Nagineni CN;Chin MS;Hooks JJ;Detrick B

文献摘要

参考文献

被引文献

相似文献

Toll 样受体 (TLR) 是先天免疫的重要组成部分,参与宿主针对微生物病原体的防御。我们评估了人视网膜色素上皮 (RPE) 细胞中 TLR 的表达和功能。实时 PCR 分析揭示了 RPE 细胞中 TLR 1-7、9 和 10 的基因表达。 TLR 1 和 3 是表达最高的 TLR。在 RPE 细胞上观察到 TLR 2、3 和 4 的蛋白表达,并且该表达通过聚 I:C 或干扰素-γ (IFN-γ) 处理而增强。 TLR 3 是 dsRNA 的受体,是病毒复制的中间体。由于 RPE 细胞表达 TLR 3 并且通常是视网膜内病毒复制的部位,因此我们评估了 TLR 3 信号传导。用 Poly I:C 处理的 RPE 细胞产生 IFN-β,但不产生 IFN-α,并且用抗 TLR 3 抗体处理 RPE 细胞可以抑制这种情况。人重组 IFN-β 通过抑制病毒复制而对 RPE 细胞具有生物活性。 Poly I:C 处理 RPE 导致 IL-6、IL-8、MCP-1 和 sICAM-1 产量增加。 RPE 细胞上 TLR 的存在以及 RPE 细胞中由此产生的 TLR 信号传导表明这些分子可能在视网膜内的先天性和适应性免疫反应中发挥重要作用。
Toll-like receptors (TLRs) are crucial components of innate immunity that participate in host defense against microbial pathogens. We evaluated the expression and function of TLRs in human retinal pigment epithelial (RPE) cells. Real time PCR analysis revealed gene expression for TLRs 1–7, 9, and 10 in RPE cells. TLRs 1 and 3 were the most highly expressed TLRs. Protein expression for TLRs 2, 3, and 4 was observed on RPE cells and this expression was augmented by treatment with poly I:C or interferon-γ (IFN-γ). TLR 3 is the receptor for dsRNA, an intermediate of virus replication. Because RPE cells express TLR 3 and are frequently the site of virus replication within the retina, we evaluated TLR 3 signaling. RPE cells treated with poly I:C produced IFN-β but not IFN-α, and this was inhibited by the treatment of RPE cells with anti-TLR 3 antibody. Human recombinant IFN-β was shown to be biologically active on RPE cells by inhibiting viral replication. Poly I:C treatment of RPE resulted in an increase in the production of IL-6, IL-8, MCP-1, and sICAM-1. The presence of TLRs on RPE cells and the resultant TLR signaling in RPE cells suggest that these molecules may play an important role in innate and adaptive immune responses within the retina.
DOI: 10.1038/35099560
发表时间: 2001-10-18
期刊: NATURE
影响因子: 64.8
作者:
Alexopoulou, L;Holt, AC;Flavell, RA
通讯作者: Flavell, RA
DOI: 10.1128/iai.68.12.7010-7017.2000
发表时间: 2000-12-01
影响因子: 3.1
作者:
Cario, E;Podolsky, DK
通讯作者: Podolsky, DK
Toll样受体4位于高尔基体中,并与肠上皮细胞中的内部脂多糖共定位。
DOI: 10.1084/jem.20011788
发表时间: 2002-03-04
期刊: The Journal of experimental medicine
影响因子: --
作者:
Hornef MW;Frisan T;Vandewalle A;Normark S;Richter-Dahlfors A
通讯作者: Richter-Dahlfors A
DOI: 10.1128/jvi.77.8.4588-4596.2003
发表时间: 2003-04-01
影响因子: 5.4
作者:
Compton, T;Kurt-Jones, EA;Finberg, RW
通讯作者: Finberg, RW
DOI: 10.4049/jimmunol.167.4.1882
发表时间: 2001-08-15
影响因子: 4.4
作者:
Gewirtz, AT;Navas, TA;Madara, JL
通讯作者: Madara, JL