NF-kappaB is essential for induction of CYLD, the negative regulator of NF-kappaB: evidence for a novel inducible autoregulatory feedback pathway.

Published

Journal Article

The transcription factor NF-kappaB regulates genes involved in inflammatory and immune responses, tumorigenesis, and apoptosis. In contrast to the pleiotropic stimuli that lead to its positive regulation, the known signaling mechanisms that underlie the negative regulation of NF-kappaB are very few. Recent studies have identified the tumor suppressor CYLD, loss of which causes a benign human syndrome called cylindromatosis, as a key negative regulator for NF-kappaB signaling by deubiquitinating tumor necrosis factor (TNF) receptor-associated factor (TRAF) 2, TRAF6, and NEMO (NF-kappaB essential modulator, also known as IkappaB kinase gamma). However, how CYLD is regulated remains unknown. The present study revealed a novel autoregulatory feedback pathway through which activation of NF-kappaB by TNF-alpha and bacterium nontypeable Haemophilus influenzae (NTHi) induces CYLD that in turn leads to the negative regulation of NF-kappaB signaling. In addition, TRAF2 and TRAF6 appear to be differentially involved in NF-kappaB-dependent induction of CYLD by TNF-alpha and NTHi. These findings provide novel insights into the autoregulation of NF-kappaB activation.

Full Text

Cited Authors

  • Jono, H; Lim, JH; Chen, L-F; Xu, H; Trompouki, E; Pan, ZK; Mosialos, G; Li, J-D

Published Date

  • August 2004

Published In

Volume / Issue

  • 279 / 35

Start / End Page

  • 36171 - 36174

PubMed ID

  • 15226292

Pubmed Central ID

  • 15226292

Electronic International Standard Serial Number (EISSN)

  • 1083-351X

International Standard Serial Number (ISSN)

  • 0021-9258

Digital Object Identifier (DOI)

  • 10.1074/jbc.m406638200

Language

  • eng