The Cytokines Interleukin 27 and Interferon-γ Promote Distinct Treg Cell Populations Required to Limit Infection-Induced Pathology

Aisling O Hara Hall, Daniel P. Beiting, Cristina Tato, Beena John, Guillaume Oldenhove, Claudia Gonzalez Lombana, Gretchen Harms Pritchard, Jonathan S. Silver, Nicolas Bouladoux, Jason S. Stumhofer, Tajie H. Harris, John Grainger, Elia D Tait Wojno, Sagie Wagage, David S. Roos, Philip Scott, Laurence A. Turka, Sara Cherry, Steven L. Reiner, Daniel CuaYasmine Belkaid, M. Merle Elloso, Christopher A. Hunter

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Interferon-γ (IFN-γ) promotes a population of T-bet+ CXCR3+ regulatory T (Treg) cells that limit T helper 1 (Th1) cell-mediated pathology. Our studies demonstrate that interleukin-27 (IL-27) also promoted expression of T-bet and CXCR3 in Treg cells. During infection with Toxoplasma gondii, a similar population emerged that limited T cell responses and was dependent on IFN-γ in the periphery but on IL-27 at mucosal sites. Transfer of Treg cells ameliorated the infection-induced pathology observed in Il27-/- mice, and this was dependent on their ability to produce IL-10. Microarray analysis revealed that Treg cells exposed to either IFN-γ or IL-27 have distinct transcriptional profiles. Thus, IFN-γ and IL-27 have different roles in Treg cell biology and IL-27 is a key cytokine that promotes the development of Treg cells specialized to control Th1 cell-mediated immunity at local sites of inflammation. © 2012 Elsevier Inc.
    Original languageEnglish
    Pages (from-to)511-523
    Number of pages12
    JournalImmunity
    Volume37
    Issue number3
    DOIs
    Publication statusPublished - 21 Sept 2012

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