三氧化二砷体外诱导口腔鳞癌细胞凋亡的研究

目的 探讨三氧化二砷（As2O3)对口腔鳞癌细胞的体外生物学作用及机制。方法 采用形态学、MTT、克隆形成试验、DNA梯度降解试验、原位末端标记及流式细胞仪等方法，对As2O3在Tca8113细胞系中的作用进行体外研究。结果 As2O3对Tca8113细胞产生明显的生长抑制作用，MTT显示生长抑制率为76.3%。DNA梯度降解试验、原位末端标记、流式细胞仪显示As2O3诱导了Tca8113细胞凋亡。流式细胞仪显示As2O3的Tca8113细胞凋亡与细胞周期阻滞有关。结论 As2O3对口腔鳞癌细胞具有显著的体外生长抑制及凋亡诱导作用。

A study on the human oral squamous carcinoma cell apoptosis induced by arsenic trioxide in vitro

Objective To investigate the biological effects of As 2O 3 and its mechanism on human oral squamous carcinoma cell line in vitro . Methods The effects of As 2O 3 on Tca8113 cell line were investigated in vitro with morphological method, MTT, clone forming, DNA ladder, TUNEL assay and flow cytometry(FCM). Results As 2O 3 had marked suppressive effect on the growth of Tca8113 cell line. The growth suppression rate of the Tca8113 cells was 76.3% shown by MTT. DNA ladder, TUNEL and FCM showed As 2O 3 could induce the apoptosis of Tca8113 which might be related to cell cycle arrest shown by FCM. Conclusion As 2O 3 can inhibit the growth and induce the apoptosis of oral squamous carcinoma cell in vitro .