Abstract
Abstract IL-10 is an 18-kDa cytokine with a key role in homeostatic control of inflammatory and immune responses. We have investigated how transcription of the IL-10 gene is regulated, so as to be able to understand the circumstances of IL-10 expression in both health and disease. In the mouse, IL-10 gene expression is regulated by a TATA-type promoter with a critical cis-acting element containing GGA repeats located at −89 to −77. Its complementary sequence is similar to the cis-acting elements (TCC repeats) in the promoters of genes encoding epidermal growth factor receptor and CD58. All these elements comprise a common CCTCCT sequence with less conserved C + T-rich sequences. Eliminating this CCTCCT sequence results in a marked reduction in promoter activity, suggesting a necessary role in IL-10 gene expression. Despite its dissimilarity to the G + C-rich Sp1 consensus sequence (GC box), Sp1 and Sp3 transcription factors could be shown to bind to this motif. The requirement for Sp1 and Sp3 in transcription of IL-10 was confirmed using Drosophila SL2 cells, which lack endogenous Sp factors. These results suggest that the transcription of IL-10 is positively regulated by both Sp1 and Sp3.
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Dates
Type | When |
---|---|
Created | 11 years, 4 months ago (April 20, 2014, 8:07 p.m.) |
Deposited | 5 months ago (March 31, 2025, 4:01 a.m.) |
Indexed | 1 month ago (July 31, 2025, 11:51 p.m.) |
Issued | 25 years, 2 months ago (July 1, 2000) |
Published | 25 years, 2 months ago (July 1, 2000) |
Published Online | 25 years, 2 months ago (July 1, 2000) |
Published Print | 25 years, 2 months ago (July 1, 2000) |
@article{Tone_2000, title={IL-10 Gene Expression Is Controlled by the Transcription Factors Sp1 and Sp3}, volume={165}, ISSN={1550-6606}, url={http://dx.doi.org/10.4049/jimmunol.165.1.286}, DOI={10.4049/jimmunol.165.1.286}, number={1}, journal={The Journal of Immunology}, publisher={Oxford University Press (OUP)}, author={Tone, Masahide and Powell, Mark J and Tone, Yukiko and Thompson, Sara A J and Waldmann, Herman}, year={2000}, month=jul, pages={286–291} }