IL-10 induces DNA binding activity of three STAT proteins (Stat1, Stat3, and Stat5) and their distinct combinatorial assembly in the promoters of selected genes

Jens Wehinger , Fabrice Gouilleux (1) , Bernd Groner , Juergen Finke , Roland Mertelsmann (2) , R Weber-Nordt , Renate Maria Weber-Nordt

1 GICC UMR 6239 CNRS - Génétique, immunothérapie, chimie et cancer (GICC), UMR 6239 CNRS [2008-2011]
2 Medical Department I

Interaction of IL-10 with its receptor leads to the activation of STAT transcription factors. Herein we report the IL-10 dependent simultaneous activation of three STAT transcription factors: Stat1, Stat3, and Stat5. Upon IL-10 treatment multiple Stat proteins become simultaneously activated, and bind to different promoters with equal kinetics but form distinct homo- and heterodimeric transcriptionally active complexes depending on the STAT-consensus elements of a selected gene promoter. Upon IL-10 treatment Stat1, 3, and 5 bind to the GRR of the FcgammaRI gene, activated Stat1 and 3 bind to the SIE sequence of the c-fos promoter and transcriptionally active Stat5 assembles at the PRL-STAT consensus sequence of the beta-casein gene. Thus, functionally relevant STAT dimerization is influenced by the activated cytokine receptor as well as the specific STAT consensus sequence present in a specific gene promoter.

Domaines: Sciences du Vivant [q-bio]

Jens Wehinger, Fabrice Gouilleux, Bernd Groner, Juergen Finke, Roland Mertelsmann, et al.. IL-10 induces DNA binding activity of three STAT proteins (Stat1, Stat3, and Stat5) and their distinct combinatorial assembly in the promoters of selected genes. FEBS Letters, 1996, 394 (3), pp.365-370. ⟨10.1016/0014-5793(96)00990-8⟩. ⟨hal-02427429⟩