Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 55, Issue 3, Pages 1382-1388Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jm2016073
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Funding
- NIH [HL755223, HL84469, ES015678, ES017582]
- VA Merit Review [NEUD-004-07F]
- Ligue Nationale Contre le Cancer (Equipe Labelisee Ligue)
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Chalcones continue to attract considerable interest due to their anti-inflammatory and antiangiogenic properties. We recently reported the ability of 2',5'-dihydroxychalcone (2',5'-DHC) to induce both breast cancer resistance protein-mediated export of glutathione (GSH) and c-Jun N-terminal kinase-mediated increased intracellular GSH levels. Herein, we report a structure-activity relationship study of a series of 30 synthetic chalcone derivatives with hydroxyl, methoxyl, and halogen (F andCl) substituents and their ability to increase intracellular GSH levels. This effect was drastically improved with one or two electrowithdrawing groups on phenyl ring B and up to three methoxyl and/or hydroxyl groups on phenyl ring A. The optimal structure, 2-chloro-4',6'-dimethoxy-2'-hydroxychalcone, induced both a potent NF-E2-related factor 2-mediated transcriptional response and an increased formation of glutamate cysteine ligase holoenzyme, as shown using a human breast cancer cell line stably expressing a luciferase reporter gene driven by antioxidant response elements.
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