A cell-permeable chalcone that effectively activates NQO1 (NADPH-/quinone oxidoreductase 1) ARE- (antioxidant response element) mediated reporter transcription in human bronchial epithelial Beas-2B cells (7.0-fold of control; 20 µM compound) and induces Nrf2- (Nuclear factor erythroid 2 p45-related factor 2) regulated antioxidants and cytoprotective genes transcription, including GCLM (glutamate-cysteine ligase modifier subunit), NQO1, and HO1 (heme oxygenase-1), both in cultures ([compound] = 10 to 20 µM) in vitro and in mice (50 mg/kg p.o.) in vivo.

A cell-permeable chalcone that is shown to effectively activate NQO1 (NADPH/quinine oxidoreductase 1) ARE- (antioxidant response element) mediated reporter transcription in human bronchial epithelial Beas-2B cells (6.3- and 7.0-fold of control, respectively, with 10 and 20 µM compound) and induce Nrf2- (Nuclear factor erythroid 2 p45-related factor 2) regulated antioxidants and cytoprotective genes transcription, including GCLM (glutamate-cysteine ligase modifier subunit), NQO1, and HO1 (heme oxygenase-1), both in Beas-2B cultures (4-, 6.7-, and 178-fold, respectively, of basal NQO1/24 h, GCLM/6 h, and HO1/6 h mRNA level; [compound ] = 10 µM) in vitro and in mice (6- and 10-fold, respectively, of control GCLM and NQO1 mRNA level in small intestine 24 h after single p.o. dosage of 50 mg/kg) in vivo. The drug′s cellular target(s) and mechanism of action is unknown, but likely involves covalent thio modification of the target(s) by the compound′s electrophilic enone moiety.

Packaged under inert gas

Toxicity: Regulatory Review (Z)

Kumar, V., et al. 2011. J. Med. Chem.54, 4147.

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