The Study Of Inducing Apoptosis Effect Of Fructose 1,6-bisphosphate On The Papillary Thyroid Carcinoma Cell And Its Related Mechanism

Objective:This study aims to investigate the apoptosis-inducing effect of fructose1,6-bisphosphate(F1,6BP) on the related mechanism of papillary thyroid carcinoma W3 and T cells.Methods:W3 cells were treated with F1, 6BP alone or in combination with antioxidant catalase(CAT) or N-acetyl-L-cysteine(NAC). The changes of cell viability and cell nucleus morphology were examined by cell proliferation assay and Hoechst staining,and apoptosis levels of these cells were measured with flow cytometry. The changes of reactive oxygen species(ROS) level and the percentage of oxidized glutathione in total glutathione in W3 cells were detected by 2′, 7′-dichlorodihydrofluorescein diacetate(DCFH-DA) staining or colorimetry assay. At the same time, real-time fluorescence quantitative PCR was adopted to evaluate the expression levels of CAT and glutathione peroxidase(GSHPx) m RNAs in W3 cells.Results:F1, 6BP inhibited the growth of W3 cells significantly, coupling with an increasein intracellular ROS level and the percentage of oxidized glutathione in total glutathione. Typical apoptotic morphological changes of the cell nucleus happened.The apoptosis rate and GSH-Px and CAT m RNAs expression levels were upregulated after F1, 6BP treatment. The antitumor effect of F1, 6BP was significantly decreased after W3 cells were pretreated with NAC and CAT.Conclusions:F1, 6BP can inhibit the proliferation of W3 cells and induce the apoptosis of W3 cells through upregulating the generation of ROS, especially the production of H2O2。...