Transportation characteristics of nolatrexed in three tumor cell lines  

作　　者：李亦蕾 赵爱国 吴曙光 

机构地区：[1]Institute of Pharmaceutical Science, First Military Medical University, Guangzhou, 510515, China

出　　处：《Journal of Medical Colleges of PLA(China)》2002年第4期304-307,共4页中国人民解放军军医大学学报（英文版）

基　　金：Research Foundation of Guangdong Province (No. 99-Z-030-01)

摘　　要：Objective: To investigate the association of the transportation characteristics of nolatrexed in tumor cells with its drug sensitivity. Methods: The sensitivity of 3 tumor cell lines, C6, SRS82 and LoVo, to nolatrexed were determined by growth inhibition study. After exposure to 20 μmol/L nolatrexed at different time intervals ranging from 0 to 30 min, or to nolatrexed at different concentrations ranging from 0 to 40 μmol/L for 10 min, the intracellular drug concentration was measured using high-performance liquid chro-matography. Results: C6 was the most sensitive cell line among the three, with sensitivity 6. 8-fold and 13. 8-fold those of SRS-82 and LoVo cells respectively. Transportation of nolatrexed in the 3 cell lines were qualitatively similar, which rapidly achieved steady-state within 5 min, and linear relationship between the intracellular and extracellular drug concentration was observed. The intracellular steady-state level achieved in C6 was significantly higher than those in the other two cell lines, the latter having comparable levels. Conclusion: Nolatrexed enters the cell very quickly and different transport capacities are involved in the generation of varied sensitivity to nolatrexed in tumor cells.Objective：To investigate the association of the transportation characteristics of nolatrexed in tu-mor cells with its drug sensitivity. Methods: The sensitivity of 3 tumor cell lines, C6, SRS82 and LoVo, to nolatrexed were determined by growth inhibition study. After exposure to 20μmol/L nolatrexed at different time intervals ranging from 0 to 30 rain, or to nolatrexed at different concentrations ranging from 0 to 40μmol/L for 10 min, the intracellular drug concentration was measured using high-performance liquid chro-matography. Results: C6 was the most sensitive cell line among the three, with sensitivity 6.8-fold and 13.8-fold those of SRS-82 and LoVo cells respectively. Transportation of nolatrexed in the 3 cell lines were qualitatively similar, which rapidly achieved steady-state within 5 min, and linear relationship between the in-tracellular and extracellular drug concentration was observed. The intracellular steady-state level achieved in C6 was significantly higher than those in the other two cell lines, the latter having comparable levels. Con-clusion: Nolatrexed enters the cell very quickly and different transport capacities are involved in the genera-tion of varied sensitivity to nolatrexed in tumor cells.

关 键 词：NOLATREXED TRANSPORTATION sensitivity tumor cell high-performance liquid chromatography 

分 类 号：R730.5[医药卫生—肿瘤]