顺铂诱导人涎腺腺样囊性癌细胞多药耐药性的评价

Appraisement of multidrug resistance of a human salivary adenoid cystic carcinoma cell line

目的:用恒定顺铂浓度、周期性作用的方法,诱导产生耐顺铂的腺样囊性癌细胞株SACC,并检测其多药耐药性。方法:用浓度为1μg/ml的顺铂作用于腺样囊性癌细胞株,每次作用时间48h,经6个月后形成在该药物浓度下生长良好的耐顺铂细胞株。用MTT法、流式细胞仪检测4种化疗药物甲氨喋呤、平阳霉素、长春新碱、丝裂霉素对2种细胞的杀伤效应和细胞周期的变化。结果:经过6个月诱导形成的耐顺铂细胞株SACC/DDP,较之SACC,对4种化疗药物均产生了不同程度的抗性,流式细胞仪检测发现其细胞周期发生变化,主要是G0/G1比例下降,且与药物浓度密切相关。结论:经顺铂周期性诱导,可以产生人涎腺腺样囊性癌多药耐药细胞株。

Objective:To establish a multidrug resistant human salivary adenoid cystic carcinoma cell line. Methods:Salivary adenoid cystic cells of the cell line SACC were exposed to 1 μg/ml of DDP for 48 h at the interval of one month. 6 months later, the cell line was established and named SACC/DDP. MTT method was used to study the drug resistance of SACC and SACC/DDP cells against 4 chemotherapeutic agents(MTX, PYM, VCR, MMC). Flow cytometry was adopted to study the cell cycle distribution of the cells after treatment with 4 agents at different concentrations for 72 h. Results:The drug resistance of SACC/DDP cells against VCR,MTX,PYM and MMC was 2.9,2.4,1.1 and 1.8 times of that of SACC cells. The ratio of G0 cell number to G1 cell number in SACC/DDP cell line was smaller than that in SACC cell line after treatment with the 4 agents at different concentrations respectively.Conclusion:The multidrug resistant human salivary adenoid cystic carcinoma cell line can be estabished by exposing parent cell line SACC periodically to DDP.