Abstract:
:In the present report we have determined the molecular mechanisms, which govern the expression of the human IL-10 gene when induced by the glucocorticoid Methyl-Prednisolone (MP). Treatment of cells with MP at 10(-6) M will readily induce IL-10 in CD19+ primary B cells and in a human B cell line. Analysis of the IL-10 promoter showed a robust 18-fold induction and demonstrated that a potential GRE motif was not required, while mutation of the -120 STAT-motif strongly reduced MP-induced trans-activation. A strong induction was also seen with a trimeric STAT-motif and over-expression of dominant-negative STAT3 could block MP induction of IL-10 mRNA. Finally, MP treatment induced binding of STAT3 to the promoter as shown by gelshift, supershift and by chromatin-immunoprecipitation. These data show that glucocorticoid-induced expression of the IL-10 gene is mediated by the transcription factor STAT3.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Unterberger C,Staples KJ,Smallie T,Williams L,Foxwell B,Schaefer A,Kempkes B,Hofer TP,Koeppel M,Lohrum M,Stunnenberg H,Frankenberger M,Ziegler-Heitbrock Ldoi
10.1016/j.molimm.2008.02.020subject
Has Abstractpub_date
2008-06-01 00:00:00pages
3230-7issue
11eissn
0161-5890issn
1872-9142pii
S0161-5890(08)00095-3journal_volume
45pub_type
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