LRP及GST-π的表达与非小细胞肺癌的耐药性关系
The Effection of LRP and GST-π in Mechanism of Drug Resistance of Non-small Cell Lung Cancer
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摘要: 目的探讨NSCLC的化疗耐药性和参与介导多药耐药的相关基因和蛋白LRP及GST-π的表达,对比分析NSCLC的多药耐药性与上述二种耐药相关基因表达的关系。方法应用肿瘤细胞体外培养和MTT法对91例未经化疗的NSCLC进行体外化疗药物敏感性测试,观察NSCLC分别对环磷酰胺、阿霉素、顺铂+5-Fu三种单药和联合用药方案耐药情况和总的耐药情况,并用免疫组织化学方法对其进行3种耐药相关基因(LRP、MRP及GST-π)表达的检测,并将其表达情况与对应的化疗耐药性进行相关分析。结果91例NSCLC化疗敏感性检测结果显示:53例(58.2%)对环磷酰胺耐药,51例(56.0%)对阿霉素耐药,42例(46.2%)对顺铂+5-Fu耐药。其中,19例(20.9%)对三种用药均敏感,27例(29.8%)对三种用药均耐药,其耐药性与组织学类型和分化程度无关(P>0.05)。LRP和GST-π在91例NSCLC中总的阳性表达率分别为:53.8%和64.8%。鳞癌和腺癌相比LRP和GST-π的表达无显著性差异(P>0.05)。且LRP和GST-π的表达与对三种化疗用药的耐药性均呈显著正相关(P<0.05),并且不同表达程度间也有显著...Abstract: Objective To investigate the chemoresistance of non-small cell lung cancer (NSCLC) and the expression of correlative protein and genes which can lead to multidrug resistance(MDR) we explore the relation between chmoresistance and the expression of mdr1,MRP and GST-Л in NSCLC respectively,and define the function of the three kinds of genes in MDR mechanisms. Methods 91 cases of NSCLC were tasted with MTT assay to evaluate their chemoresistance.The chemotherapy drugs include cyclophamide,adriamycin and cisplat...
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