NF-κB potentiates caspase independent hydrogen peroxide induced cell death.

ABSTRACT:

Background

The pro-survival activity of NF-κB in response to a variety of stimuli has been extensively characterized. Although there have been a few reports addressing the pro-cell death role of NF-κB, the precise mechanism of NF-κB's pro-cell death function still remains elusive.

Methodology/principal findings

In the present study, we investigated the role of NF-κB in cell death induced by chronic insult with hydrogen peroxide (H(2)O(2)). Here, we show that NF-κB promotes H(2)O(2) induced caspase independent but PARP dependent fibroblast cell death. The pro-death activity of NF-κB is due to the DNA binding activity of RelA, which is induced through IKK- mediated IκBα degradation. NF-κB dependent pro-survival genes, Bcl-2 and XIAP, were significantly repressed, while NF-κB d

SUBMITTER: Ho JQ 

PROVIDER: S-EPMC3039651 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature