Thiotert Induces Myelodysplastic Syndromes Cells Apoptosis by Activating Oxidative Stress
Objective:To explore whether thiotert treatment can inhibit proliferation and induce apoptosis in myelodysplastic syndromes(MDS)cells.Methods:CCK-8 assay was used for determining the cytotoxicity of thiotert to MDS cell line SKM-1 and the reversal effect of GSH,NAC,and Z-VAD-FMK on thiotert-induced inhibition of cell viability.EdU assay was deployed to detect the cell proliferation ability.Intracellular reactive oxygen species(ROS)was measured by flow cytometry after DCFH-DA staining.The expression of DNA damage-and apoptosis-related proteins was detected by Western blot.Results:Thiotert treatment significantly suppressed the cell viability and proliferation ability in SKM-1 cells.A large amount of ROS generation and markedly elevated C-PARP,C-Caspase 3,and γ-H2AX were observed after thiotert administration,while BCL-2 was significantly decreased.In addition,GSH,NAC,and Z-VAD-FMK were able to mitigate the cytotoxicity of thiotert on SKM-1 cells.Conclusion:Thiotert can promote MDS cell apoptosis by mediating ROS production and pro-apoptotic proteins expression.
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