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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

CYLD is a deubiquitinating enzyme that negatively regulates NF-kappaB activation by TNFR family members.

Familial cylindromatosis is an autosomal dominant predisposition to tumours of skin appendages called cylindromas. Familial cylindromatosis is caused by mutations in a gene encoding the CYLD protein of previously unknown function. Here we show that CYLD is a deubiquitinating enzyme that negatively regulates activation of the transcription factor NF-kappaB by specific tumour-necrosis factor receptors (TNFRs). Loss of the deubiquitinating activity of CYLD correlates with tumorigenesis. CYLD inhibits activation of NF-kappaB by the TNFR family members CD40, XEDAR and EDAR in a manner that depends on the deubiquitinating activity of CYLD. Downregulation of CYLD by RNA- mediated interference augments both basal and CD40-mediated activation of NF-kappaB. The inhibition of NF-kappaB activation by CYLD is mediated, at least in part, by the deubiquitination and inactivation of TNFR-associated factor 2 ( TRAF2) and, to a lesser extent, TRAF6. These results indicate that CYLD is a negative regulator of the cytokine-mediated activation of NF-kappaB that is required for appropriate cellular homeostasis of skin appendages.[1]

References

  1. CYLD is a deubiquitinating enzyme that negatively regulates NF-kappaB activation by TNFR family members. Trompouki, E., Hatzivassiliou, E., Tsichritzis, T., Farmer, H., Ashworth, A., Mosialos, G. Nature (2003) [Pubmed]
 
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