Fachbereich Veterinärmedizin



    T Cell-Specific Inactivation of the Interleukin 10 Gene in Mice Results in Enhanced T Cell Responses but Normal Innate Responses to Lipopolysaccharide or Skin Irritation (2004)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Roers, Axel
    Siewe, Lisa
    Strittmatter, Elke
    Deckert, Martina
    Schlüter, Dirk
    Stenzel, Werner
    Gruber, Achim D (WE 12)
    Krieg, Thomas
    Rajewsky, Klaus
    Müller, Werner
    The Journal of Experimental Medicine; 200(10) — S. 1289–1297
    ISSN: 0022-1007
    Pubmed: 15534372
    Institut für Tierpathologie

    Robert-von-Ostertag-Str. 15
    Gebäude 12
    14163 Berlin
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    Abstract / Zusammenfassung

    Interleukin (IL)-10 is a regulator of inflammatory responses and is secreted by a variety of different cell types including T cells. T regulatory cells have been shown to suppress immune responses by IL-10-dependent, but also IL-10-independent, mechanisms. Herein, we address the role of T cell-derived IL-10 in mice with an inactivation of the IL-10 gene restricted to T cells generated by Cre/loxP-mediated targeting of the IL-10 gene. Splenocytes from this T cell-specific mutant secrete increased amounts of proinflammatory cytokines after activation in vitro compared with show enhanced contact hypersensitivity reactions, and succumb to severe immunopathology upon infection with Toxoplasma gondii. Despite intact IL-10 genes in other cell types, the dysregulation of T cell responses observed in the T cell-specific IL-10 mutant closely resembles the phenotype in complete IL-10 deficiency. However, in contrast to complete IL-10 deficiency, sensitivity to endotoxic shock and irritant responses of the skin are not enhanced in the T cell-specific IL-10 mutant. Our data highlight the importance of T cell-derived IL-10 in the regulation of T cell responses and demonstrate that endotoxic shock and the irritant response of the skin are controlled by IL-10 from other cell types.