Abstract:
:We have designed and synthesized certain novel oxime- and amide-bearing coumarin derivatives as nuclear factor erythroid 2 p45-related factor 2 (Nrf2) activators. The potency of these compounds was measured by antioxidant responsive element (ARE)-driven luciferase activity, level of Nrf2-related cytoprotective genes and proteins, and antioxidant activity. Among them, (Z)-3-(2-(hydroxyimino)-2-phenylethoxy)-2H-chromen-2-one (17a) was the most active, and more potent than the positive t-BHQ in the induction of ARE-driven luciferase activity. Exposure of HSC-3 cells to various concentrations of 17a strongly increased Nrf2 nuclear translocation and the expression level of Nrf2-mediated cytoprotective proteins in a concentration-dependent manner. HSC-3 cells pretreated with 17a significantly reduced t-BOOH-induced oxidative stress. In the animal experiment, Nrf2-mediated cytoprotective proteins, such as aldo-keto reductase 1 subunit C-1 (AKR1C1), glutathione reductase (GR), and heme oxygenase (HO-1), were obviously elevated in the liver of 17a-treated mice than that of control. These results suggested that novel oxime-bearing coumarin 17a is able to activate Nrf2/ARE pathway in vivo and are therefore seen as a promising candidate for further investigation.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Chang KM,Chen HH,Wang TC,Chen IL,Chen YT,Yang SC,Chen YL,Chang HH,Huang CH,Chang JY,Shih C,Kuo CC,Tzeng CCdoi
10.1016/j.ejmech.2015.10.029subject
Has Abstractpub_date
2015-12-01 00:00:00pages
60-74eissn
0223-5234issn
1768-3254pii
S0223-5234(15)30311-1journal_volume
106pub_type
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