White DE, Burchill SA. BAY 11-7082 induces cell death through NF-kappaB-independent mechanisms in the Ewing's sarcoma family of tumours.
Cancer Lett 2008;
268:212-24. [PMID:
18471963 DOI:
10.1016/j.canlet.2008.03.045]
[Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 03/27/2008] [Accepted: 03/28/2008] [Indexed: 10/22/2022]
Abstract
The role of NF-kappaB in the Ewing's sarcoma family of tumours (ESFT) and their response to fenretinide has been investigated. Basal levels of phosphorylated NF-kappaB were low in all ESFT cells. BAY 11-7082 decreased cell viability, which was accompanied by caspase-3 cleavage. This was independent of the increase in reactive oxygen species, p38(MAPK) phosphorylation and expression of NF-kappaB target proteins. NF-kappaB knockdown did not induce death under normal growth conditions, but did reduce TNFalpha-dependent cell survival. Fenretinide-induced apoptosis was independent of NF-kappaB. BAY 11-7082-induced cell death through an NF-kappaB-independent mechanism and enhanced cell death when combined with fenretinide.
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