Objective： To investigate the apoptosis-inducing effect of Jinke on Molt-4 cells and its possible mechanism. Methods： The Molt-4 cells were treated with different concentrations of Jinke and then cultured for necess...Objective： To investigate the apoptosis-inducing effect of Jinke on Molt-4 cells and its possible mechanism. Methods： The Molt-4 cells were treated with different concentrations of Jinke and then cultured for necessary time. The Annexin-V / PI method was used to detect the apoptosis rate. The cell cycle was analyzed by DNA content with flow cytometry. Double parameters analysis of cyclins / DNA was performed to detect the expression of cyclin E. API method was used to confirm the cell cycle-specific apoptosis. The expressions of Bcl-2 and Bax were detected by westem blot. Results： 24 h after the treatment of 0.5, 1.0, 1.5, 2.0 and 3.0 mg/mL Jinke, the apoptosis rate of Molt-4 cells was evaluated in a concentration-dependent manner, from 5.2% of the control group to 41.0% of the 3.0 mg/mL Jinke group. When the Molt-4 cells were cultured with 1.5 mg/mL Jinke, the apoptosis rate was evaluated in a time-dependent manner. DNA content analysis showed that G0/G1 phase of Molt-4 cells increased in a time-dependent manner. The expression of cyclin E increased gradually. API assay showed the apoptosis cells were almost in G0/G1 phase. Western blot showed the Bcl-2 was down-regulated and the Bax was up-regulated. Conclusion： Jinke could induce G1 phase-specific apoptosis in Molt-4 cells in time-and concentration-dependent manners involving G1 phase arrest. The mechanism of apoptosis inducing effect may be related to the upregulation of Bax and the down-regulation of Bcl-2.展开更多
基金grants of Foundation of "973" program (No. 2004CB518705)National Natural Science Foundation of China (No. 30570908)
文摘Objective： To investigate the apoptosis-inducing effect of Jinke on Molt-4 cells and its possible mechanism. Methods： The Molt-4 cells were treated with different concentrations of Jinke and then cultured for necessary time. The Annexin-V / PI method was used to detect the apoptosis rate. The cell cycle was analyzed by DNA content with flow cytometry. Double parameters analysis of cyclins / DNA was performed to detect the expression of cyclin E. API method was used to confirm the cell cycle-specific apoptosis. The expressions of Bcl-2 and Bax were detected by westem blot. Results： 24 h after the treatment of 0.5, 1.0, 1.5, 2.0 and 3.0 mg/mL Jinke, the apoptosis rate of Molt-4 cells was evaluated in a concentration-dependent manner, from 5.2% of the control group to 41.0% of the 3.0 mg/mL Jinke group. When the Molt-4 cells were cultured with 1.5 mg/mL Jinke, the apoptosis rate was evaluated in a time-dependent manner. DNA content analysis showed that G0/G1 phase of Molt-4 cells increased in a time-dependent manner. The expression of cyclin E increased gradually. API assay showed the apoptosis cells were almost in G0/G1 phase. Western blot showed the Bcl-2 was down-regulated and the Bax was up-regulated. Conclusion： Jinke could induce G1 phase-specific apoptosis in Molt-4 cells in time-and concentration-dependent manners involving G1 phase arrest. The mechanism of apoptosis inducing effect may be related to the upregulation of Bax and the down-regulation of Bcl-2.
