c-Maf regulates IL-10 expression during Th17 polarization.
IL-10 production by Th17 cells is critical for limiting autoimmunity and inflammatory responses. Gene array analysis on Stat6 and T-bet double-deficient Th17 cells identified the Th2 transcription factor c-Maf to be synergistically up-regulated by IL-6 plus TGFbeta and associated with Th17 IL-10 production. Both c-Maf and IL-10 induction during Th17 polarization depended on Stat3, but not Stat6 or Stat1, and mechanistically differed from IL-10 regulation by Th2 or IL-27 signals. TGFbeta was also synergistic with IL-27 to induce c-Maf, and it induced Stat1-independent IL-10 expression in contrast to IL-27 alone. Retroviral transduction of c-Maf was able to induce IL-10 expression in Stat6-deficient CD4 and CD8 T cells, and c-Maf directly transactivated IL-10 gene expression through binding to a MARE (Maf recognition element) motif in the IL-10 promoter. Taken together, these data reveal a novel role for c-Maf in regulating T effector development, and they suggest that TGFbeta may antagonize Th17 immunity by IL-10 production through c-Maf induction.
Department of Gene and Cell Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA.
Jiangnan
J
Xu
Yu
Y
Yang
Guixing
G
Qiu
Girdhari
G
Lal
Zhihong
Z
Wu
David E
DE
Levy
Jordi C
JC
Ochando
Jonathan S
JS
Bromberg
Yaozhong
Y
Ding
D000818:Animals; D015153:Blotting, Western; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D024202:Electrophoretic Mobility Shift Assay; D004797:Enzyme-Linked Immunosorbent Assay; D005434:Flow Cytometry; D015870:Gene Expression; D016753:Interleukin-10 / Q000096:biosynthesis* / Q000276:immunology; D020381:Interleukin-17 / Q000276:immunology / Q000378:metabolism; D015850:Interleukin-6 / Q000276:immunology / Q000378:metabolism; D008213:Lymphocyte Activation; D051379:Mice; D018345:Mice, Knockout; D020411:Oligonucleotide Array Sequence Analysis; D051257:Proto-Oncogene Proteins c-maf / Q000276:immunology* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D050796:STAT3 Transcription Factor / Q000276:immunology / Q000378:metabolism; D020825:T-Box Domain Proteins / Q000276:immunology / Q000378:metabolism; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D016212:Transforming Growth Factor beta / Q000276:immunology* / Q000378:metabolism; D000098815:T-bet Transcription Factor
D020381:Interleukin-17; D015850:Interleukin-6; D051257:Proto-Oncogene Proteins c-maf; D050796:STAT3 Transcription Factor; D020825:T-Box Domain Proteins; D000098815:T-bet Transcription Factor; D016212:Transforming Growth Factor beta; D016753:Interleukin-10