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Updated: May 25, 2026

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
Published on: July 26, 2017
[Toll-like receptor 8: the awkward TLR]
Lena Alexopoulou1, Benoit Desnues, Olivier Demaria
1Centre D'immunologie de Marseille-Luminy, Aix-Marseille Université, case 906, 13288 Marseille Cedex 9, France. alexopoulou@ciml.univ-mrs.fr
Abstract:
Toll-like receptors (TLR) sense a variety of microbial products and play an important role in the mounting of innate and adaptive immune responses. TLR1 to TLR9 are common in mice and humans and recognize similar ligands in both species, with the exception of TLR8. Human TLR7 and TLR8 and mouse TLR7 detect viral single-stranded RNA and imidazoquinoline compounds, while mouse TLR8 not. Based on this discrepancy, for long time it was believed that mouse TLR8 is not functional and as a consequence the contribution of TLR8 to innate immunity remained poorly understood. Our recent studies revealed an important role for TLR8 in the regulation of TLR7-mediated autoimmunity in the mouse. This review illustrates our current understanding regarding the function of TLR8 and its potential for future clinical use for the treatment and/or prevention of various pathological conditions.
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