Abstract
Objective To investigate the apoptosis of cell line HL-60 induced by matrine and its possible mechanism. Methods CCK-8 assay was used to observe the proliferation inhibitation of HL-60 cells treated with matrine. FCM was applied to detect apoptotic cells and mitoehondrial transmembrane potential.Spectrophotometry was used to detect the activity of Caspase-9. Results Matrine (0.25-2.0 mg/ml) could significantly inhibit proliferation of HL-60 cells (F=67.83, P ＜0.05). Ater 48 hours, the apoptosis rate increased obviously in dose dependence (t = 4.685, 6.300. 9.641, 6.786, P ＜0.05). Within 48 hours, the mitochondrial transmembrance potential of HL-60 cells treated with matrine (1.0 mg/ml) gradually decreased (F = 54.83, P ＜0.05), and the activation of Caspase-9 gradually decreased in time dependence (F = 72.31,P ＜0.05). Conclusion Matrine can induce apoptosis of HL-60 cells by reducing mitochondrial transmembrance potential and activating Caspase-9. Key words: Matrine; HL-60 cells; Apoptosis
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