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    Faculty of Life Science, University of Manchester, Manchester

    A key role for gp130 expressed on peripheral sensory nerves in pathological pain.

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    Interleukin-6 (IL-6) is a key mediator of inflammation. Inhibitors of IL-6 or of its signal transducing receptor gp130 constitute a novel class of anti-inflammatory drugs, which raise great hopes for improved treatments of painful inflammatory diseases such as rheumatoid arthritis. IL-6 and gp130 may enhance pain not only indirectly through their proinflammatory actions but also through a direct action on nociceptors (i.e., on neurons activated by painful stimuli). We found indeed that the IL-6/gp130 ligand-receptor complex induced heat hypersensitivity both in vitro and in vivo. This process was mediated by activation of PKC-delta via Gab1/2/PI(3)K and subsequent regulation of TRPV1, a member of the transient receptor potential (TRP) family of ion channels. To assess the relevance of this direct pain promoting effect of IL-6, we generated conditional knock-out mice, which lack gp130 specifically in nociceptors, and tested them in models of inflammatory and tumor-induced pain. These mice showed significantly reduced levels of inflammatory and tumor-induced pain but no changes in immune reactions or tumor growth. Our results uncover the significance of gp130 expressed in peripheral pain sensing neurons in the pathophysiology of major clinical pain disorders and suggest their use as novel pain relieving agents in inflammatory and tumor pain.

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    Description

    Title : A key role for gp130 expressed on peripheral sensory nerves in pathological pain.
    Author(s) : Manfred Andratsch, Norbert Mair, Cristina E Constantin, Nadja Scherbakov, Camilla Benetti, Serena Quarta, Christian Vogl, Claudia A Sailer, Nurcan Uceyler, Johannes Brockhaus, Rudolf Martini, Claudia Sommer, Hanns Ulrich Zeilhofer, Werner Müller, Rohin
    Abstract : Interleukin-6 (IL-6) is a key mediator of inflammation. Inhibitors of IL-6 or of its signal transducing receptor gp130 constitute a novel class of anti-inflammatory drugs, which raise great hopes for improved treatments of painful inflammatory diseases such as rheumatoid arthritis. IL-6 and gp130 may enhance pain not only indirectly through their proinflammatory actions but also through a direct action on nociceptors (i.e., on neurons activated by painful stimuli). We found indeed that the IL-6/gp130 ligand-receptor complex induced heat hypersensitivity both in vitro and in vivo. This process was mediated by activation of PKC-delta via Gab1/2/PI(3)K and subsequent regulation of TRPV1, a member of the transient receptor potential (TRP) family of ion channels. To assess the relevance of this direct pain promoting effect of IL-6, we generated conditional knock-out mice, which lack gp130 specifically in nociceptors, and tested them in models of inflammatory and tumor-induced pain. These mice showed significantly reduced levels of inflammatory and tumor-induced pain but no changes in immune reactions or tumor growth. Our results uncover the significance of gp130 expressed in peripheral pain sensing neurons in the pathophysiology of major clinical pain disorders and suggest their use as novel pain relieving agents in inflammatory and tumor pain.
    Keywords : animals, carcinoma, carcinoma complications, carcinoma metabolism, cells, cultured, cytokine receptor gp130, cytokine receptor gp130 genetics, cytokine receptor gp130 metabolism, ganglia, spinal, spinal cytology, spinal metabolism, hot temperature, interl

    Subject : unspecified
    Area : Other
    Language : English
    Year : 2009

    Affiliations Faculty of Life Science, University of Manchester, Manchester
    Journal : Journal of Neuroscience
    Volume : 29
    Issue : 43
    Pages : 13473-13483
    Url : http://www.ncbi.nlm.nih.gov/pubmed/19864560

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