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    J Immunol. 2006 May 1;176(9):5161-6.

    Cutting Edge: Inhibition of the retinoid X receptor (RXR) blocks T helper 2 differentiation and prevents allergic lung inflammation.

    Source

    Bioxell SpA, Milan, Italy. rgrenningloh@rics.bwh.harvard.edu

    Abstract

    Among the many factors regulating Th cell differentiation, some nuclear hormone receptors are emerging as important players. The retinoid X receptor (RXR) functions as heterodimerization partner for a variety of nuclear hormone receptors. We show in this study that RXR is critical for Th2-mediated immunity. An RXR antagonist inhibited Th2 differentiation, resulting in reduced production of IL-4, IL-10, and IL-13, whereas IFN-gamma production was enhanced. This effect was dependent on the presence of APCs. In addition, IL-5 production was blocked directly in Th cells. In vivo, inhibition of RXR prevented experimentally induced allergic lung inflammation. Th1-mediated inflammation was not affected. Its specific role in Th2-mediated inflammation makes RXR a promising target for the development of therapies against diseases such as allergic asthma and atopic dermatitis.

    PMID:
    16621979
    [PubMed - indexed for MEDLINE]
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