Immunity
Volume 10, Issue 6, 1 June 1999, Pages 745-751
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Article
The Transcription Factor c-Maf Controls the Production of Interleukin-4 but Not Other Th2 Cytokines

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Abstract

IL-4 promotes the differentiation of naive CD4+ T cells into IL-4-producing T helper 2 (Th2) cells. Previous work provided suggestive but not conclusive evidence that the transcription factor c-Maf directed the tissue-specific expression of IL-4. It was not known whether c-Maf controlled the transcription of other Th2 cytokine genes. To elucidate the role of c-Maf in vivo, we examined cytokine production in mice lacking c-Maf (c-maf−/−). CD4+ T cells and NK T cells from c-maf−/− mice were markedly deficient in IL-4 production. However, the mice produced normal levels of IL-13 and IgE, and, when differentiated in the presence of exogenous IL-4, c-maf−/− T cells produced approximately normal levels of other Th2 cytokines. We conclude that c-Maf has a critical and selective function in IL-4 gene transcription in vivo.

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