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Authors
Affiliations
1 A.R. Al-Jeraisy Chair for DNA Research, College of Science, King Saud University, Riyadh, SA
2 King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, SA
3 Department of Zoology, College of Science, King Saud University, Riyadh, SA
4 Department of Microbiology, Faculty of Agricultural Sciences, AMU, Aligarh, IN
Source
Toxicology International (Formerly Indian Journal of Toxicology), Vol 18, No 2 (2011), Pagination: 105-110
Abstract
Rotenone, a botanical insecticide is known to cause apoptosis in various cell types. Trans-resveratrol, a natural phytophenol present in red grapes and wine, is also well documented for its antioxidant, anti-inflammatory, anti-mutagenic, and anticarcinogenic activities. Therefore, the present investigations were carried out to assess the protective effect of trans-resveratrol against rotenone-induced cell death in human breast adenocarcinoma (MCF-7) cells. MCF-7 cells were exposed with various concentrations of rotenone for 24 h, and the loss in percent cell viability was evaluated by MTT [3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide] and neutral red uptake (NRU) assays. A significant decrease in percent cell viability in MCF-7 cells was observed at 50 µM and above concentrations of rotenone, as compared to untreated control. Furthermore, various concentrations (5, 10, and 25 µΜ) of trans-resveratrol were used to see its protective role on cell viability in rotenone-induced cell death in MCF-7 cells. Pre- or post- treatment of trans-resveratrol for 24 h was given to the cells. The data exhibited a significant dose dependent increase in the percent cell viability under pre- and post-treatment conditions. However, post-treatment of trans-resveratrol for 24 h after rotenone exposure to the cells was relatively less effective. Overall, the results suggest that trans-resveratrol significantly protects MCF-7 cells from rotenone-induced cell death. This model can be used as an effective and economical alternative to animal models for screening the antioxidant activity of a variety of natural compounds/drugs.
Keywords
Cytotoxicity, MCF--7 cells, rotenone, trans-resveratrol
