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  • Title: Bisphenol A diglycidyl ether-induced apoptosis involves Bax/Bid-dependent mitochondrial release of apoptosis-inducing factor (AIF), cytochrome c and Smac/DIABLO.
    Author: Fehlberg S, Gregel CM, Göke A, Göke R.
    Journal: Br J Pharmacol; 2003 Jun; 139(3):495-500. PubMed ID: 12788809.
    Abstract:
    (1) Bisphenol A diglycidyl ether (BADGE) is a peroxisome proliferator-activated receptor-gamma (PPAR-gamma) antagonist, which is able to induce apoptosis in tumor cells independently of PPAR-gamma in caspase-dependent and -independent manners. Additionally, BADGE promotes TRAIL-induced apoptosis. (2) We report that BADGE activates via Bax and caspases-2 and -8 both the intrinsic and extrinsic apoptotic pathways using Bid as a shunt. (3) BADGE stimulates the mitochondrial release of apoptosis-inducing factor (AIF), cytochrome c and second mitochondria-derived activator of caspase/direct IAP-binding protein with low pl (Smac/DIABLO). The release of cytochrome c could not be blocked by inhibitors of caspases-3, -8 and -9 indicating that BADGE acts upstream of caspases-3 and -9 and does not involve caspase-8 to release cytochrome c. (4) While the caspase-independent apoptotic effect might be mediated by AIF, the sensitizing effect of BADGE against other apoptotic substances is most likely mediated by the X-linked inhibitor of apoptosis inhibitor Smac/DIABLO. (5) Our data suggest that BADGE or BADGE derivatives could represent promising substances for the treatment of neoplasms improving the antitumoral activity of TRAIL.
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