You can manage bookmarks using lists, please log in to your user account for this.
Media type:
E-Article
Title:
Multiple control of interleukin-8 gene expression
Contributor:
Hoffmann, Elke;
Dittrich-Breiholz, Oliver;
Holtmann, Helmut;
Kracht, Michael
Published:
Oxford University Press (OUP), 2002
Published in:
Journal of Leukocyte Biology, 72 (2002) 5, Seite 847-855
Language:
English
DOI:
10.1189/jlb.72.5.847
ISSN:
0741-5400;
1938-3673
Origination:
Footnote:
Description:
AbstractInterleukin (IL)-8, a prototypic human chemokine, was detected more than a decade ago as the founding member of the chemokine superfamily. One of the most remarkable properties of IL-8 is the variation of its expression levels. In healthy tissues, IL-8 is barely detectable, but it is rapidly induced by ten- to 100-fold in response to proinflammatory cytokines such as tumor necrosis factor or IL-1, bacterial or viral products, and cellular stress. Recently, significant advances in the understanding of signaling pathways, which coordinately regulate IL-8 transcription as well as mRNA stabilization in response to external stimuli, have been made. Maximal IL-8 amounts are generated by a combination of three different mechanisms: first, derepression of the gene promoter; second, transcriptional activation of the gene by nuclear factor-κB and JUN-N-terminal protein kinase pathways; and third, stabilization of the mRNA by the p38 mitogen-activated protein kinase pathway. In that way, cells are able to rapidly increase and at the same time, to fine-tune the amount of IL-8 secreted and thereby control the extent of leukocytes attracted to sites of tissue injury.