کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5549745 | 1556831 | 2017 | 13 صفحه PDF | دانلود رایگان |
- Esculetin (100 μM), a polyphenolic antioxidant compound, induces apoptosis on human NB4 cells.
- Since apoptosis involves redox imbalance, co-treatments with esculetin and oxidants are assayed.
- Esculetin (100 μM) prevents the increase of apoptosis and the superoxide anion production promotes by t-BHP.
- H2O2 potentiates cell death acting synergistically with esculetin.
- Increases of apoptosis by H2O2 plus esculetin may be related to increments of O2â.
Esculetin is a polyphenolic compound with cytoprotective properties. We previously demonstrated the induction of apoptosis by esculetin in NB4 human leukemia cells, as a model, by a mechanism not well understood. To analyse the antioxidant activity of esculetin on apoptosis, we have studied the influence of co-treatments of esculetin at a concentration of 100 μM with exogenous ROS donors, namely tert-butyl-hydroperoxide and hydrogen peroxide, on NB4 cells. Esculetin (100 μM) exerts a protective effect on cell viability and death necrosis or late apoptosis caused by the oxidant t-BHP whereas it potentiates decrease of cell viability and cell death caused by H2O2. In the first case, the O2â scavenging activity of esculetin (100 μM) could be implicated. In the last one, cytotoxicity by apoptosis induction seems to be related to the increase in O2â, among other possible mechanisms. These results contribute to the study of the antitumor properties of esculetin by regulation of redox balance in leukemia cells.
Journal: Experimental and Toxicologic Pathology - Volume 69, Issue 8, 2 October 2017, Pages 700-712