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IL-27 and IFN- α Signal via Stat1 and Stat3 and Induce T-Bet and IL-12R β 2 in Naive T Cells

Hibbert, Linda, Pflanz, Stefan, de Waal Malefyt, Rene, Kastelein, Robert A.·2003·Journal of Interferon & Cytokine Research

Abstract

Interleukin-27 (IL-27) supports proliferation of naive CD4(+) T cells and enhances interferon-gamma (IFN-gamma) production by activated T cells and natural killer (NK) cells. We report here that IL-27 induces Stat1 and Stat3 phosphorylation and activation in human and murine cell lines and primary human T cells. IL-27 also induces T-Bet, a Stat1-dependent gene crucial to Th1 cell commitment. Similarly, IFN-alpha activates Stat1 and Stat3 and T-Bet expression in naive T cells. Induction of T-Bet results in upregulation of IL-12Rbeta2 on naive T cells, which is essential for responsiveness to IL-12 and differentiation to a Th1 phenotype. Both IL-27 and IFN-alpha induce expression of IL-12Rbeta2 in T cells. In contrast, IFN-gamma, which activates Stat1 but not Stat3, induces expression of T-Bet but not IL-12Rbeta2 in naive T cells. We propose that IL-27 and IFN-alpha are important for early Th1 commitment and act upstream of IL-12 and IFN-gamma in this pathway.

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Metadata

Authors
Hibbert, L., Pflanz, S., de Waal Malefyt, R., & Kastelein, R. A.
Venue
Journal of Interferon & Cytokine Research
Published
2003-09
Volume
23
Issue
9
Pages
513-522
ISSN
  • 1079-9907 (ISSN-L)
  • 1557-7465
OpenAlex
W2129292145
Cited by
318
References
4
FWCI
8.30
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: IL-27 and IFN- α Signal via Stat1 and Stat3 and Induce T-Bet and IL-12R β 2 in Naive T Cells. https://app.cochat.ai/papers/10.1089/10799900360708632
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Hibbert, L., Pflanz, S., de Waal Malefyt, R., & Kastelein, R. A. (2003). IL-27 and IFN- α Signal via Stat1 and Stat3 and Induce T-Bet and IL-12R β 2 in Naive T Cells. Journal of Interferon & Cytokine Research. https://doi.org/10.1089/10799900360708632

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