Recognition of Cytosolic DNA Activates an IRF3-Dependent Innate Immune Response

作者: Daniel B. Stetson , Ruslan Medzhitov

DOI: 10.1016/J.IMMUNI.2005.12.003

关键词:

摘要: Nucleic acid recognition upon viral infection triggers type I interferon production. Viral RNA is detected by both endosomal, TLR-dependent and cytosolic, RIG-I/MDA5-dependent pathways. TLR9 the only known sensor of foreign DNA; it unknown whether innate immune DNA exists in cytosol. Here we present evidence that cytosolic activates a potent response to invasive bacterium Listeria monocytogenes. The noninvasive Legionella pneumophila an identical through its IV secretion system. Activation interferons TLR independent requires IRF3 but occurs without detectable activation NF-kappaB MAP kinases. Microarray analyses reveal unique overlapping gene-expression program activated compared TLR9- responses. These findings define linked

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