Department of Biomedicine, Aarhus University, Aarhus, Denmark.
EMBO J. 2014 Mar 18;33(6):529-30. doi: 10.1002/embj.201487747. Epub 2014 Feb 12.
The host immune response is initiated by pattern recognition receptors (PRR) when triggered by specific ligands known as pathogen-associated molecular patterns (PAMP). Toll-like receptor 9 is highly expressed in plasmacytoid dendritic cells and is well described as a PRR for CpG DNA which induce the production of cytokines and type I interferons. In this issue of The EMBO Journal, Rigby et al identify RNA-DNA hybrids as a novel PAMP specifically recognized by TLR9 in dendritic cells.
当特定配体(称为病原体相关分子模式,PAMP)触发时,模式识别受体(PRR)会启动宿主免疫反应。Toll 样受体 9 在浆细胞样树突状细胞中高度表达,并且被很好地描述为 CpG DNA 的 PRR,CpG DNA 诱导细胞因子和 I 型干扰素的产生。在本期《欧洲分子生物学学会杂志》中,Rigby 等人确定 RNA-DNA 杂交体为树突状细胞中 TLR9 特异性识别的新型 PAMP。