Abstract

To explore whether thiotert treatment can inhibit proliferation and induce apoptosis in myelodysplastic syndromes (MDS) cells. 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. 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. Thiotert can promote MDS cell apoptosis by mediating ROS production and pro-apoptotic proteins expression.

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