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硼替佐米增强前列腺癌细胞对NK细胞介导细胞杀伤作用的敏感性 被引量:1

Bortezomib enhances the sensitivity of prostate cancer cells to natural killer cell-mediated cytotoxicity
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摘要 目的:探讨硼替佐米是否能够增强前列腺癌细胞对NK细胞介导杀伤作用的敏感性,以及是否在不同类型的人前列腺癌细胞系中有相似的作用。方法:以激素依赖性的前列腺癌细胞株LNCaP和激素非依赖性的前列腺癌细胞株DU145为模型,不同浓度(0、5、10、15、20、25nmol/L)硼替佐米处理细胞后,CCK-8法检测肿瘤细胞的增殖,Annexin V/PI法检测细胞凋亡率。结果:15、20、25nmol/L硼替佐米处理DU145细胞48、72h后,各处理组细胞的增殖率分别为(82.79±2.04)%、(73.59±2.95)%、(74.16±6.16)%和(71.24±5.30)%、(51.20±2.91)%、(38.02±2.67)%,同样处理LNCaP细胞后,各处理组细胞的增殖率分别为(77.04±7.74)%、(42.61±6.62)%、(23.85±6.04)%和(36.45±7.02)%、(14.94±5.76)%、(11.65±5.87)%。与对照组相比,硼替佐米强烈抑制两种细胞系的增殖(P<0.05)。15、20、25nmol/L硼替佐米处理DU145细胞24h后,DU145细胞的凋亡率分别为(14.41±1.32)%、(16.13±1.55)%、(14.48±1.42)%,而在LNCaP细胞,20、25nmol/L硼替佐米处理24h后,凋亡率为(12.77±1.28)%和(14.84±1.65)%,与对照组相比有统计学差异(P<0.05),DU145细胞对硼替佐米诱导的凋亡作用较LNCaP细胞更加敏感。但是,在短期分析中硼替佐米不能致敏两种细胞系对NK细胞介导的杀伤作用。在长效分析中,用硼替佐米处理肿瘤细胞后,20nmol/L硼替佐米+NK组诱导的DU145细胞和LNCaP细胞凋亡率分别为(41.83±5.06)%和(30.31±3.62)%,较单独应用硼替佐米或者NK细胞更高(P<0.05)。结论:硼替佐米能够应用于致敏前列腺癌细胞对NK细胞介导的杀伤作用的敏感性,提高当前前列腺癌的治疗水平。而且此治疗策略对雄激素非依赖性的前列腺癌患者更有效。 Objective: To investigate whether bortezomib can enhance the sensitivity of human prostate cancer (PCa) cells to natural killer (NK) cell-mediated cytotoxicity, and whether it produces the same effect on different PCa cell lines. Methods: We treated androgen-dependent PCa LNCaP ceils and androgen-independent PCa DU145 cells with bortezomib at the concentrations of 0, 5, 10, 15, 20 and 25 nmol/L for 24, 48 and 72 hours, and then detected the proliferation and apoptosis of the tumor cells by CCK-8 and Annexin V/PI, respectively. Results : The proliferation rates of the DU145 cells treated with 15, 20 and 25 nmoL/L bortezomib were ( 82.79 ± 2.04) %, (73.59 ± 2.95 ) % and (74.16 ± 6.16 ) % at 48 hours and ( 71.24 ± 5.30) %, ( 51.20 ± 2.91 ) % and ( 38.02 ± 2.67 ) % at 72 hours, and those of the LNCaP cells were (77.04 ± 7.74 ) %, (42.61 ± 6.62 ) % and ( 23.85 ± 6.04 ) % at48 hours and (36.45 ± 7.02) %, ( 14.94 v 5.76) % and ( 11.65 ± 5.87 ) % at 72 hours, both significantly inhibited as compared with the control group ( P 〈 0.05 ). At 24 hours, the apoptosis rates of the DU145 cells treated with 15, 20 and 25 nmol/L bortezomib were ( 14. 41 ± 1.32) %, ( 16.13 ± 1.55 ) % and ( 14.48 ± 1.42) %, and those of the LNCaP cells treated with 20 and 25 nmol/L bortezomib were ( 12.77 ± 1.28) % and ( 14.84 ± 1.65 ) %, significantly higher than those of the control group ( P 〈 0.05 ), and the DU145 ceils showed an even higher sensitivity to bortezomib than the LNCaP cells. Bortezomib failed to sensitize these two cell lines to NK cell-mediated cytotoxicity in short-term assay, while long-term assay manifested that the apoptosis rates of DU145 and LNCaP cells after treated with 20 nmol/L bortezomib + NK cells were (41.83 ± 5.06) % and (30.31 ± 3.62) % , respectively, significantly higher than those after treated with either bortezomib or NK cells alone ( P 〈 O. 05 ). Conclusion : Bortezomib enhances th
出处 《中华男科学杂志》 CAS CSCD 2014年第3期218-224,共7页 National Journal of Andrology
关键词 硼替佐米 DU145细胞 前列腺癌 NK细胞 LNCAP细胞 bortezomib DUld5 cell prostate cancer natural killer cell LNCaP cell
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