Effect of tetrandrine on murine hemangioendothelioma cell and its molecular mechanisms / 中国生化药物杂志

ABSTRACT

Objective To explore tetrandrine on murine hemangioendothelioma cell and its mechanisms.Methods Explore the effect of tetrandrine on EOMA cells in time and concentration MTT experiment, the content of tetrandrine treated EOMA cells in different cell cycle detected by flow cytometry, speculated effect of tetrandrine on G1/S phase checkpoint for EOMA cells blocking.Western blot analyzed the molecular mechanism of tetrandrine induced EOMA cell block, and intracellular reactive oxygen species level were detected byflow cytometry.Then used the active oxygen scavenger NAC pretreated cells after drug incubation.Results Tetrandrine could inhibit the cell reproduction, and showed a concentration and time dependence, role in tetrandrine 20μM was significantly inhibited after 48 h.Tetrandrine caused mainly by EOMA cells during the cell cycle of G1/S phase cell block, so as to achieve the effect of inhibiting cell proliferation.Tetrandrine increased intracellular reactive oxygen species ( ROS) blockade effect of elevated levels of cell cycle to achieve, and the regulation of AKT, GSK-3 βand p53 cell cycle upstream protein level, finally maked the expression changes.Further research proved that, tetrandrine induced up-regulation of ROS level in cells to induce EOMA cell cycle arrest.Moreover, regulated by the ROS inhibitor NAC could significantly inhibit EOMA cell cycle factor.Conclusion Tetrandrine can inhibit tumor angiogenesis, which provides theory basis for clinical anti-cancer drugs in inhibiting tumor growth.