摘要
目的:观察转染了质粒PCI-NEO-SNCG后的前列腺癌激素非依赖性细胞系PC-3细胞对抗肿瘤药物顺铂(DDP)、5-氟尿嘧啶(5-FU)、阿霉素(ADM)、长春新碱(VCR)、紫杉醇(TAX)的敏感性,探讨SNCG的表达对各种抗肿瘤药物作用效果的影响。方法:转染质粒PCI-NEO和PCI-NEO-SNCG至PC-3细胞,采用RT-PCR法检测PC-3细胞中SNCG的表达;MTT法检测各抗肿瘤药物对转染后PC-3细胞的抑制作用;流式细胞术分析转染细胞经TAX作用后的细胞周期及凋亡。结果:5种抗肿瘤药物对转染了空载体PCI-NEO质粒及PCI-NEO-SNCG质粒细胞的生长抑制作用均存在时间依赖性;转染PCI-NEO的PC-3细胞组与转染PCI-NEO-SNCG的PC-3细胞组中各种抗肿瘤药物的抑制效果比较显示,DDP、5-FU、ADM、VCR的抑制效果两组间没有显著性差异(P>0.05),而TAX对转染PCI-NEO-SNCG的细胞的抑制率较转染PCI-NEO的细胞显著降低(P<0.01);经TAX处理48 h后,在转染PCI-NEO质粒的细胞中,停留在G2-M期的细胞比例显著高于转染PCI-NEO-SNCG质粒的细胞(P<0.01),而停留在G0-G1期及S期的细胞比例,在转染PCI-NEO质粒的细胞中显著低于转染PCI-NEO-SNCG质粒的细胞(P<0.01);在转染PCI-NEO质粒的细胞中Caspase-3的表达显著高于转染PCI-NEO-SNCG质粒的细胞(P<0.01)。结论:TAX对转染了SNCG基因的PC-3细胞中的生长抑制作用明显降低,提示SNCG的表达可抑制TAX的作用效果,这一发现可为前列腺癌的个体化治疗提供理论依据和指导。
Objective： To observe the sensitivity of the PC-3 cell lines transfected with the PCI-NEO-SNCG plasmid to Cisplatin （ DDP）, 5-Fluorouraeil （5-FU）, Adriamyein （ADM）, Vinefistine （VCR） and Paclitaxel （ TAX）, and to explore the influence of the SNCG expression on the effectiveness of anti-tumor drugs. Methods： The plasmids PCI-NEO and PCI-NEO-SNCG were transfected into the hormone-independent prostate cancer cell lines PC-3. RT-PCR was adopted to examine the expression of SNCG in the PC-3 cell lines. The MTr method was employed to detect the suppressive effects of different anti-tumor drugs （ DDP, ADM, 5-FU, VCR and TAX） on the cell lines transfected with PCI-NEO and PCI-NEO-SNCG. Flow cytometry was used to analyze the cell cycles and apoptosis of the transfected cells treated with TAX. Results ： The 5 anti-tumor drugs suppressed the growth of the cell lines transfected with the plasmids PCI-NEO and PCI-NEO-SNCG in a time-dependant manner. The comparison between the growth-suppressing effects of different anti-tumor drugs on the PC-3 cell lines showed no significant differences between the group transfected with PCI-NEO and that with PCI-NEO-SNCG in DDP, 5-FU, ADM and VCR （P 〉 0.05）, while the rate of suppression of TAX on the latter cell lines was significantly lower than that on the former （P 〈 0.01 ）. Compared with the PCI-NEO-SNCG plasmid transfected cell lines, after treated with TAX for 48 hours, those transfected with the PCI-NEO plasmid exhibited a significantly larger proportion of cells remaining in the G2-M stage （P 〈 0.01 ）, a smaller proportion in the G0-G1 and S stages （P 〈 0.01 ） and a significantly higher expression of Caspase- 3 （P 〈 0. 01 ）. Conclusion： The significant reduction of the growth-suppressing effect of TAX in the SNCG-transfected PC-3 cell lines suggests that the expression of SNCG may restrain the effect of TAX. These findings have provided evidence and guide to the individual chemotherapy of prostate cancer.
出处
《中华男科学杂志》
CAS
CSCD
2008年第12期1077-1082,共6页
National Journal of Andrology
基金
南京市科技局科技发展指导性计划基金(2005指导0584)
