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Combined treatment with vitamin C and sulindac synergistically induces p53- and ROS-dependent apoptosis in human colon cancer cells.
In this study, we evaluated a combinatorial strategy utilizing sulindac and vitamin C. The death of HCT116 cells upon combination therapy occurred via a p53-mediated mechanism. The combination therapeutic resistance developed in isogenic p53 null HCT116 cells and siRNA-mediated p53 knockdown HCT116 cells, but the exogenous expression of p53 in p53 null isogenic cells resulted in the induction of cell death. In addition, we investigated an increased level of intracellular ROS (reactive oxygen species), which was preceded by p53 activation. The expression level of PUMA (p53-upregulated modulator of apoptosis), but not Bim, w...
Source: Toxicology Letters - June 19, 2016 Category: Toxicology Authors: Gong EY, Shin YJ, Hwang IY, Kim JH, Kim SM, Moon JH, Shin JS, Lee DH, Hur DY, Jin DH, Hong SW, Lee WK, Lee WJ Tags: Toxicol Lett Source Type: research