摘要
目的 :观察三氧化二砷对肝癌SMMC - 772 1和BEL - 74 0 2细胞生长抑制作用差异性并且探讨其可能的作用机理。方法 :应用细胞培养和台盼蓝拒染法观察不同时间和不同浓度的三氧化二砷对肝癌细胞SMMC - 772 1和BEL - 74 0 2细胞生长的抑制作用 ,比较生长抑制率的差异并用谷胱甘肽检测试剂盒测定两种肝癌细胞内谷胱甘肽(GSH)的含量。结果 :三氧化二砷浓度为 0 5 0 μmol/L、作用时间为 2 4h可显著抑制肝癌细胞系BEL - 74 0 2的生长 ,抑制作用呈时间、剂量依赖性 ;对SMMC - 772 1细胞 ,三氧化二砷浓度为 2 0 0 μmol/L、作用时间为 2 4h才出现抑制细胞生长作用 ,二者的生长抑制率存在显著差异 ,0 2 5 - 2 0 0 μmol/LAs2 O3 作用 72h后 ,BEL - 74 0 2细胞的生长抑制率均高于SMMC - 772 1细胞 (P <0 0 5 )。检测SMMC - 772 1和BEL - 74 0 2细胞内GSH含量分别为 (5 0 8± 5 2 ) μmol/gprotein和 (18 7± 1 4 ) μmol/gprotein ,存在明显差异。 结论 :三氧化二砷抑制肝癌细胞SMMC - 772 1和BEL - 74 0 2的生长存在显著的差异 ;BEL - 74 0 2细胞对三氧化二砷非常敏感性 ,可能与其细胞内谷胱甘肽含量较低 。
AIM: To explore the different inhibitory effect of arsenic trioxide (As_2O_3) on hepatocarcinoma cell growth in SMMC-7721 and BEL-7402 cell lines and its mechanism. METHODS: The cell culture and trypan blue staining were used to study the inhibitory effect of arsenic trioxide on cell growth, and the glutathione (GSH) contents in hepatocarcinoma cells treated with arsenic trioxide were detected. RESULTS: Arsenic trioxide inhibited the growth of BEL-7402 cells in a time and dose-dependent manner. The inhibitory effect was significant at a lower dose of 0.50 μmol/L for 24 h, however, to SMMC-7721 cells, a higher dose of 2.00 μmol/L for 96 h was needed. The inhibitory rate of arsenic trioxide (0.25-2.00 μmol/L) on BEL-7402 cell growth was higher than that on SMMC-7721 cells. The content of GSH in SMMC-7721 cells was much higher than that in BEL-7402 cells [(50.8±5.2) (μmol/g) protein and (18.7±1.4) μmol/g protein, respectively]. CONCLUSION: There was a significant difference in inhibition of hepatocarcinoma cell growth by arsenic trioxide between BEL-7402 and SMMC-7721 cell lines, the cause of which may be due to the difference in GSH content in BEL-7402 and SMMC-7721 cells. [
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2004年第7期1179-1182,共4页
Chinese Journal of Pathophysiology
基金
广东省自然科学基金重点资助项目 (0 2 1195 )
广州市重点科技基金资助项目 (2 0 0 1-Z - 2 - 0 37- 0 1)
