环氧化酶-2抑制药对肺癌细胞和骨肉瘤细胞生长的抑制作用

目的观察选择性环氧化酶-2（COX-2）抑制药塞来昔布、罗非昔布对人骨肉瘤细胞株（HOS-8603）、肺癌细胞株（A-549）的作用以及罗非昔布、塞来昔布对两种细胞抑制效应的比较。方法MTT法测定体外培养的细胞株HOS-8603、A-549对不同浓度的罗非昔布和塞来昔布的敏感性，流式细胞仪分析细胞增殖周期的影响及凋亡。结果塞来昔布、罗非昔布均可明显抑制HOS 8603、A-549细胞的生长（P＜0.05），抑制效应呈现浓度依赖型和时间依赖型。HOS-8603和A-549细胞分裂阻滞在G2/M期，出现凋亡峰，塞来昔布对HOS 8603的作用强于罗非昔布。结论COX-2抑制药塞来昔布尼罗非昔布对骨肉瘤细胞、肺癌细胞的生长有抑制作用，有望成为抗肿瘤新药。

Inhibitory Effects of Cyclooxygenase-2 Inhibitory Drugs on Human Osteosarcoma and Lung Cancer Cell Lines

Objective To compare the effects of two cyclooxygenase-2 inhibitors,celecoxib and rofecoxib on the growth of human osteosarcoma (HOS-8603) and lung cancer cell (A-549) lines. Methods The anti-proliferation effects were determined by methabenzthiazuron (MTT) method. The cell growing cycle and the cell apoptosis were analyzed by flow cytometry. Results Cyclooxygenase-2 inhibitors, celecoxib and rofecoxib had inhibitory and apoptosis-inducting effect on the growth of the two tumor cell lines. The inhibitions of celecoxib and rofecoxib to the two tumor cell lines were dose-dependent and time-dependent. The cells treated with the two drugs showed a G_2/M arrest which was the peak time of apoptosis. There was a significant difference between rofecoxib and celecoxib groups ( P <0.05). And celecoxib had a stronger inhibition to HOS-8603 than rofecoxib. Conclusion Cyclooxygenase-2 inhibitors, celecoxib and rofecoxib have significant effect on the growth of the two tumor cell lines, and may become useful medicines in tumor treatment.