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Nat Rev Immunol. 2009 Nov;9(11):778-88. doi: 10.1038/nri2655.

Regulation of tissue homeostasis by NF-kappaB signalling: implications for inflammatory diseases.

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Institute of Genetics, Centre for Molecular Medicine (CMMC), and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Z├╝lpicher Strasse 47, 50674 Cologne, Germany.


The nuclear factor-kappaB (NF-kappaB) signalling pathway regulates immune responses and is implicated in the pathogenesis of many inflammatory diseases. Given the well established pro-inflammatory functions of NF-kappaB, inhibition of this pathway would be expected to have anti-inflammatory effects. However, recent studies in mouse models have led to surprising and provocative results, as NF-kappaB inhibition in epithelial cells resulted in the spontaneous development of severe chronic inflammatory conditions. These findings indicate that NF-kappaB signalling acts in non-immune cells to control the maintenance of tissue immune homeostasis. This Review discusses the mechanisms by which NF-kappaB activity in non-immune cells regulates tissue immune homeostasis and prevents the pathogenesis of inflammatory diseases.

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