Species-specific recognition of single-stranded RNA via toll-like receptor 7 and 8 - PubMed (original) (raw)

. 2004 Mar 5;303(5663):1526-9.

doi: 10.1126/science.1093620. Epub 2004 Feb 19.

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• PMID: 14976262
• DOI: 10.1126/science.1093620

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Species-specific recognition of single-stranded RNA via toll-like receptor 7 and 8

Florian Heil et al. Science. 2004.

Free article

Abstract

Double-stranded ribonucleic acid (dsRNA) serves as a danger signal associated with viral infection and leads to stimulation of innate immune cells. In contrast, the immunostimulatory potential of single-stranded RNA (ssRNA) is poorly understood and innate immune receptors for ssRNA are unknown. We report that guanosine (G)- and uridine (U)-rich ssRNA oligonucleotides derived from human immunodeficiency virus-1 (HIV-1) stimulate dendritic cells (DC) and macrophages to secrete interferon-alpha and proinflammatory, as well as regulatory, cytokines. By using Toll-like receptor (TLR)-deficient mice and genetic complementation, we show that murine TLR7 and human TLR8 mediate species-specific recognition of GU-rich ssRNA. These data suggest that ssRNA represents a physiological ligand for TLR7 and TLR8.

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Comment in

• Immunology. After the toll rush.
  O'Neill LA. O'Neill LA. Science. 2004 Mar 5;303(5663):1481-2. doi: 10.1126/science.1096113. Science. 2004. PMID: 15001768 No abstract available.

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