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存活素siRNA表达质粒对化疗药物抑癌作用的影响
引用本文:李莉萍,罗超权,张志珍,梁念慈.存活素siRNA表达质粒对化疗药物抑癌作用的影响[J].湛江医学院学报,2010,28(1):4-7,10.
作者姓名:李莉萍  罗超权  张志珍  梁念慈
作者单位:李莉萍,张志珍,梁念慈(广东医学院生物化学与分子生物学研究所,广东湛江,524023);罗超权(中山大学中山医学部生物化学教研室,广东广州,510080) 
基金项目:广东省中医药局科研课题 
摘    要:目的探讨存活素siRNA表达质粒(mU6/survivin质粒)对化疗药物抑癌作用的影响。方法采用MTT法检测mU6/survivin质粒与多种常规肿瘤化疗药物对乳腺癌MCF-7细胞增殖的联合作用。结果比较单纯化疗药物作用组的各相应浓度点,siRNA表达质粒mU6/survivin与化疗药物顺铂、环磷酰胺、5.氟尿嘧啶或秋水仙碱合用组对肿瘤细胞MCF-7的细胞增殖抑制率均明显提高,差异均有统计学意义(P〈0.01);对靶向DNA药物如顺铂、环磷酰胺和5-氟尿嘧啶的抗癌性能具有显著的协同增强作用(二者合用效应Q值均〉1),但对靶向微管的药物秋水仙碱没有相加作用(Q值〈1)。结论在解除肿瘤细胞中存活素功能的基础上进行药物化疗,可能是肿瘤治疗的一个新的可行方向。

关 键 词:存活素  siRNA  质粒  化疗药物

Effect of survivin siRNA expression plasmid on anti-tumor role of chemotherapeutic drugs
LI Li-ping,LUO Chao-quan,ZHANG Zhi-zhen,LIANG Nian-ci.Effect of survivin siRNA expression plasmid on anti-tumor role of chemotherapeutic drugs[J].Journal of Guangdong Medical College,2010,28(1):4-7,10.
Authors:LI Li-ping  LUO Chao-quan  ZHANG Zhi-zhen  LIANG Nian-ci
Institution:1. Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang 524023, China)
Abstract:Objective To study the influence of survivin siRNA expression plasmid on anti-tumor role of chemotherapeutic drugs. Methods The combined role of mU6/survivin plasmid and several chemotherapeutic drugs in the proliferation of MCF-7 cells was determined by MTT method. Results The combined use of mU6/survivin plasmid and cisplatin, cyclophosphamide, 5-fluorouracil or colchicine resulted in significant inhibition of MCF-7 cells com- pared with the single use of mU6/survivin plasmid or chemotherapeutic drugs (P 〈 0.01 ). The synergistic effect was observed in the combination of pmU6/survivin and cisplatin, cyclophosphamide and 5-fluorouracil (Q 〉 1) other than colchicine (Q〈 1 ). Conclusion The combination of chemotherapy and survivin deprival may be a novel regimen for cancer patients.
Keywords:siRNA
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