β-tubulin-Ⅲ和Stathmin与晚期非小细胞肺癌化疗敏感性的关系

Relationship between Expression of β-tubulin-Ⅲ Plus Stathmin in Advanced Non-Small Cell Lung Cancer and its Sensitivity to Venorelbine Chemotherapy

背景与目的长春瑞滨+顺铂/卡铂(NP)方案是晚期非小细胞肺癌(NSCLC)患者的标准化疗方案之一。本课题通过研究NSCLC患者肿瘤组织中3型β微管蛋白(β-tubulin-Ⅲ)和Stathmin蛋白的表达与患者对NP方案敏感性的关系,为个体化治疗方案的制定提供择药依据。方法以Western blot法测定患者肿瘤组织中β-tubulin-Ⅲ和Stathmin蛋白的表达,依据表达高低分为4组:二者均低表达的L组,仅β-tubulin-Ⅲ低表达的B组,仅Stathmin低表达的S组,及二者皆高表达的H组;同时所有患者接受2或4周期的长春瑞滨+顺铂/卡铂(NP)方案化疗,观察各组患者的有效率(response rate,RR)、中位生存期(media survival time,MST)、疾病进展时间(timetoprogress,TTP)。结果共90例ⅢB-Ⅳ期的NSCLC患者入组,L组22例,B组、S组均23例,H组22例,各组RR分别为68.2%、26.1%、30.4%、22.7%,L组优于其它3组(P<0.05);各组MST分别为377天、305天、321天、271天,TTP分别为240天、182天、190天、166天,均显示出L组优于其它3组(P<0.05)。结论NSCLC患者肿瘤组织中β-tubulin-Ⅲ和Stathmin蛋白的表达,与患者对NP方案的敏感性有关,可作为选择合适化疗药物的参考。

Background and objective Vinorelbine plus cisplatin/carboplatin （NP） is one of the standard combination chemotherapy regimen for advanced non-small cell lung cancer （NSCLC）. The aim of this study is to investigate the relationship between expression of Stathmin and β -tubulin-Ⅲ in NSCLC biopsies and sensitivity to Vinorelbine, which would provide a basis of the proper medicine choice for the patients＇ tailored chemotherapy. Methods Western blot was used to investigate the expression of Stathmin and β -tubulin-Ⅲ protein in the biopsies from stage ⅢB-Ⅳ NSCLC patients. All the cases were divided into 4 groups according to the level of the two proteins, of which L represented both protein expressed lowly, B showed β -tubulin-Ⅲ lowly expressed group, while S showed Stathmin lowly, and H represented both protein highly expressed. At the same time, all the patients accepted NP chemotherapy for 2 or 4 cycles according to the responses to this regimen. The responses rate （RR）, media survival time （MST）, time to progress （TTP） were observed. Results A total of 90 stage ⅢB-Ⅳ NSCLC patients were divided into 4 groups, 22 in L group, 23 in B and S group while 22 in H group respectively. The RR of the groups were 68.2%, 26.1%, 30.4% and 22.7% respectively. There were statistically significant differences between L group and other 3 groups （P〈0.05）. The MST were 377, 305, 321 and 271 days respectively, and the TTP were 240, 182, 190 and 166 days in the 4 groups. Statistically significant differences between L group and other 3 groups （P〈0.05） can be seen in both MST and TTP. Conclusion The expression of β-tubulin-Ⅲ and Stathmin in advanced NSCLC biopsies had relationship with the sensitivity to NP chemotherapy regimen in the patients. Cases with high level of these two proteins would have poor responses to this cytotoxic drug.