Epidermal p65/NF-κB signalling is essential for skin carcinogenesis.

ABSTRACT: The nuclear factor kappa B (NF-κB) signalling pathway exhibits both tumour-promoting and tumour-suppressing functions in different tissues and models of carcinogenesis. In particular in epidermal keratinocytes, NF-κB signalling was reported to exert primarily growth inhibitory and tumour-suppressing functions. Here, we show that mice with keratinocyte-restricted p65/RelA deficiency were resistant to 7, 12-dimethylbenz(a)anthracene (DMBA)-/12-O-tetra decanoylphorbol-13 acetate (TPA)-induced skin carcinogenesis. p65 deficiency sensitized epidermal keratinocytes to DNA damage-induced death in vivo and in vitro, suggesting that inhibition of p65-dependent prosurvival functions prevented tumour initiation by facilitating the elimination of cells carrying damaged DNA. In addition, lack of p65 st

SUBMITTER: Kim C 

PROVIDER: S-EPMC4119358 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature