Abstract
The antitumor effects of curcumin have attracted widespread attention worldwide. One of its major functions is to induce the apoptosis of tumor cells, but the antitumor mechanism is currently unclear. In the present study, we found that cell mortality and curcumin concentration were dose dependent. Curcumin of low concentrations (10 μΜ) could reduce the level of reactive oxygen species (ROS) in tumor cells, while curcumin of high concentrations (80 μΜ) was able to significantly increase the content of ROS. In addition, Western blotting detection suggested that curcumin of high concentrations can induce the release of Cyto-C and the activation of Caspase-3, and that ROS scavenger NAC apparently inhibits apoptosis protein release and activation, consequently slowing the curcumin-induced apoptosis. Taken together, curcumin further activates the mitochondrial apoptotic pathway by inducing cells to generate ROS and ultimately promotes the apoptosis of tumor cells.
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Chang, Z., Xing, J. & Yu, X. Curcumin induces osteosarcoma MG63 cells apoptosis via ROS/Cyto-C/Caspase-3 pathway. Tumor Biol. 35, 753–758 (2014). https://doi.org/10.1007/s13277-013-1102-7
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DOI: https://doi.org/10.1007/s13277-013-1102-7