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目的:探讨硼替佐米(BOR)对急性T淋巴细胞白血病细胞株Jurkat的增殖抑制和促凋亡作用及其相关作用机制。方法:2017年5月至2019年5月，采用四甲基偶氮唑蓝法(MTT法)检测硼替佐米对Jurkat细胞增殖的影响；流式细胞仪检测硼替佐米对Jurkat细胞细胞凋亡的影响；实时定量聚合酶链反应(RT-PCR)法检测硼替佐米对Jurkat细胞Bax、Bcl-2、Cox-2基因表达水平的影响。结果:5 ng/mL、10 ng/mL、20 ng/mL、40 ng/mL浓度BOR作用于Jurkat细胞24 h的增殖抑制率分别为(13.23±0.71)%、(39.53±0.95)%、(53.07±1.12)%、(60.43±0.75)%，48 h的增殖抑制率分别为(25.20±0.96)%、(52.80±1.30)%、(60.67±0.64)%、(75.10±1.35)%，72 h的增殖抑制率分别为(38.37±0.93)%、(60.94±0.85)%、(73.83±5.08)%、(88.37±1.55)%，Jurkat细胞的增殖抑制率随药物浓度的增加、作用时间的延长而增加，差异均有统计学意义(n F＝1 602.202、1 085.089、181.034，均n P<0.05)。5 ng/mL、10 ng/mL、20 ng/mL、40 ng/mL浓度BOR作用于Jurkat细胞24 h、48 h、72 h，Jurkat细胞凋亡率随药物浓度的增加、作用时间的延长而增加，差异均有统计学意义(n F＝1 288.571、223.378、251.175，均n P<0.05)。5 ng/mL、10 ng/mL、20 ng/mL、40 ng/mL浓度BOR作用于Jurkat细胞24 h、48 h、72 h，Jurkat细胞Bax mRNA表达水平随药物浓度的增加、作用时间的延长而增高，差异均有统计学意义(n F＝258.446、518.929、276.764，均n P<0.05)；而Bcl-2 mRNA、Cox-2 mRNA表达水平随药物浓度的增加、作用时间的延长而减低，差异有统计学意义(n FBcl-2 mRNA＝236.848、264.849、343.968，n FCox-2 mRNA＝679.404、1 288.681、1 541.850，均n P<0.05)。n 结论:BOR对Jurkat细胞有抑制增殖、诱导凋亡的作用。BOR可使Jurkat细胞BaxmRNA表达水平上调、Bcl-2和Cox-2 mRNA表达水平下调。BOR上调Bax表达、下调Bcl-2和Cox-2表达是其促凋亡的分子机制之一。“,”Objective:To explore the effects and mechanisms of bortezomib on the proliferation and apoptosis of acute T lymphocyte leukemia cell line Jurkat.Methods:MTT assay was used to test the influence of bortezomib on the proliferation of Jurkat cells.Flow cytometry was used to detect the influence of bortezomib on apoptosis of Jurkat cells.Real-time quantitative polymerase reaction(RT-PCR) was used to detect the effects of bortezomib on the expression of Bax, Bcl-2 and Cox-2 genes in Jurkat cells.Results:The inhibition rates of 5ng/mL, 10ng/mL, 20ng/mL and 40ng/mL bortezomib on Jurkat cells at 24h were (13.23±0.71)%, (39.53±0.95)%, (53.07±1.12)%, (60.43±0.75)%, respectively, and the inhibition rates at 48h were (25.20±0.96)%, (52.80±1.30)%, (60.67±0.64)%, (75.10±1.35)%, respectively.The inhibitory rates of proliferation of Jurkat cells at 72h were (38.37±0.93)%, (60.94±0.85)%, (73.83±5.08)%, (88.37±1.55)%, respectively.The inhibitory rates of proliferation of Jurkat cells increased with the increase of drug concentration and the prolongation of action time, and the differences were statistically significant(n F=1 602.202, 1 085.089, 181.034, all n P<0.05). Bortezomib (5ng/mL, 10ng/mL, 20ng/mL and 40ng/mL) treatment for 24h, 48h and 72h, the apoptosis rate of Jurkat cells increased with the increase of drug concentration and the prolongation of action time, the differences were statistically significant(n F=1 288.571, 223.378, 251.175, all n P<0.05). The expression of Bax mRNA in Jurkat cells increased with the increase of drug concentration and time(n F=258.446, 518.929, 276.764, all n P<0.05). The Bcl-2 mRNA and Cox-2 mRNA expression levels decreased with the increase of drug concentration and the prolongation of action time(n FBcl-2 mRNA=236.848, 264.849, 343.968, n FCox-2 mRNA=679.404, 1288.681, 1541.850, all n P<0.05).n Conclusion:Bortezomib can inhibit the proliferation and induce apoptosis of Jurkat cells.Bortezomib can increase the expression of Bax mRNA and decrease the expression of Bcl-2 and Cox-2 mRNA, which may be the molecular mechanism of bortezomib to promote apoptosis.