【摘要】 目的:分析人肺腺癌干细胞(lung adenocarcinoma stem cell,LASC)对顺铂(cisplatin,DDP)和卡铂(carboplatin,CBP)的药物敏感度。方法:人肺腺癌细胞SPC-A1、AG及CPA-Y2经DDP和CBP作用后,应用CCK-8(cell countingkit-8)比色法检测细胞存活率,应用免疫荧光检测法测定药物生存细胞(drug surviving cell,DSC)的表型特征。通过磁性细胞分选技术分离肺腺癌干细胞,应用绿色荧光蛋白(green fluorescent protein,GFP)示踪技术检测DSC中的肿瘤干细胞,分析DSC对DDP和CBP的药物敏感度。结果:LASC具有细支气管肺泡干细胞(bronchioalveolar stem cell,BASC)表型(OCT4+CCSP+SP-C+)。将此类癌干细胞(CD221+)与肺腺癌分化细胞(CD221-)混合后检测DSC发现,后者具有OCT4+BASC表型。DSC对铂类药物具有显著抗性。结论:肺腺癌干细胞对DDP和CBP具有显著耐药性,可能是化疗后肿瘤复发的根源。更多还原

【Abstract】 Objective:To analyze the drug sensitivity of human lung adenocarcinoma stem cells (LASC) to cisplatin (DDP) and carboplatin (CBP). Methods:Human lung adenocarcinomaic cells SPC-A1,AG,and CPA-Y2 were treated with DDP and CBP. The cell viability of cells was detected by CCK-8 assay. The phenotypic characteristics of drug surviving cells(DSCs)were determined by immunofluorescence staining. The LASC population was then separated by magnetic-activated cell sorting method. The LASC in DSCs was traced by using green fluorescence protein (GFP). The drug sensitivity of DSCs to DDP and CBP was analyzed.Results:The LASC exhibited the phenotypes of bronchioalveolar stem cells (BASC,OCT4+CCSP+SP-C+). After mixture of CD221+LASC with CD221-lung adenocarcinoma differentiated cells,the DSC population showed OCT4+BASC phenotypes. These DSCs were significantly resistant to DDP and CBP.Conclusion:LASC has a high resistance to DDP and CBP. This may be the reason for tumor recurrence after chemotherapy.更多还原