摘要
目的:建立多倍体肿瘤细胞,研究其增殖、分裂和药物敏感性。方法:将鼠纤维肉瘤细胞株Meth-A经270 nmol/L秋水仙碱、800nmol/L K-252a、100nmol/L Staurospo-line和100nmol/L紫杉醇处理60h后继续培养,台盼蓝染色计数细胞,经碘化丙啶染色后流式细胞仪检测细胞DNA含量;并测定肿瘤细胞对3种化疗药物的半数抑制浓度(IC50)。结果:建成了可稳定生长47d的多倍体细胞,DNA含量为4倍体。此细胞呈指数增殖,但比2倍体Meth-A细胞株生长缓慢。柔红霉素对2倍体和4倍体细胞的IC50分别为(0.022±0.002)和(0.023±0.003)μg/mL,顺铂的IC50分别为(0.108±0.035)和(0.173±0.086)μg/mL,两者差异无统计学意义,t值分别为0.85和1.23,P均>0.05;但紫杉醇的IC50分别是(39.812±0.116)和(21.385±0.660)μg/mL,4倍体细胞明显低于2倍体细胞,t=6.16,P<0.01。Gimsa染色显示,多倍体细胞体积大,多核。结论:4倍体细胞可连续地增殖和分裂,对抗肿瘤药物仍然敏感,此细胞可以用于研究多倍体化后的生物学行为。
OBJECTIVE: To establish a polyploid tumour cell line and study its proliferation,division and drug sensitivity.METHODS: Meth-A cells(mice fibrosarcoma cell line) were exposed to 270 nmol/L demecolcine,800 nmol/L K-252a,100 nmol/L staurospoline and 100 nmol/L taxol for 60 hours.The subcultured cells were counted by the trypan blue exclusion method and their DNA contents were examined by flow cytometry with PI-stain.Then IC50(s) of three chemotherapy drugs on the established cell line were determined.RESULTS:...
出处
《中华肿瘤防治杂志》
CAS
2008年第12期886-889,共4页
Chinese Journal of Cancer Prevention and Treatment
基金
教育部归国博士启动基金(2004-231
2004-527)
