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Lookup NU author(s): Professor Penny Lovat, Dr Michael Tilby, Professor Archibald Malcolm, Professor Andrew Pearson, Dr Chris RedfernORCiD
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The RARβ/γ-selective retinoids fenretinide and CD437 induce caspase-dependent apoptosis but generate free radicals independently of caspases. Apoptosis, but not free radical generation, induced by these retinoids is inhibited by RARβ/γ-specific antagonists. Both fenretinide and CD437 induce apoptosis synergistically with cisplatin, carboplatin, or etoposide. However, antioxidants inhibit this synergy to the level obtained with chemotherapeutic drugs alone, and this implies that free radical generation is important in the synergistic response. Since apoptosis induced by fenretinide or CD437 is mediated by apoptotic pathways involving RARs and/or mitochondria and differs from mechanisms of chemotherapy-induced apoptosis this may explain the strong synergistic response seen between these synthetic retinoids and chemotherapeutic drugs. These results suggest that fenretinide or CD437 may be useful adjuncts to neuroblastoma therapy. (C) 2000 Wiley-Liss, Inc.
Author(s): Lovat, P.E., Ranalli, M., Bernassola, F., Tilby, M., Malcolm, A.J., Pearson, A.D.J., Piacentini, M., Melino, G., Redfern, C.P.F.
Publication type: Article
Publication status: Published
Journal: Medical and Pediatric Oncology
Year: 2000
Volume: 35
Issue: 6
Pages: 663-668
Print publication date: 01/01/2000
ISSN (print): 1545-5009
ISSN (electronic): 1545-5017
URL: http://dx.doi.org/10.1002/1096-911X(20001201)35:6<663::AID-MPO39>3.0.CO;2-4
DOI: 10.1002/1096-911X(20001201)35:6<663::AID-MPO39>3.0.CO;2-4
PubMed id: 11107142
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