磺胺二甲嘧啶对FRTL-5细胞基因表达谱的影响

目的研究磺胺二甲嘧啶对FRTL5细胞基因表达谱的影响,探讨环境甲状腺素干扰物的作用机制。方法指数生长期细胞经20μgml磺胺二甲嘧啶处理24h后,用TRIzol法提取RNA,用9753位点的cDNA芯片检测基因表达情况,实验组和对照组细胞分别用Cy3dCTP和Cy5dCTP标记,计算Cy3和Cy5的比值,找出差异表达基因。结果芯片经扫描分析后,发现表达有差异的基因共有679条占芯片上基因总数的70%,其中395(40%)条基因表达增加,284(30%)条基因表达下降,涉及基因表达调控、细胞周期调控、细胞免疫,细胞代谢等众多事件。结论磺胺二甲嘧啶对FRTL-5细胞的毒性效应,其机制涉及多种基因。

Effect of Sulphamethazine on the Gene Expression of FRTL - 5 cells

OBJECTIVE: To study the effect of Sulphamethazine on the gene expression of FRTL-5 cells, and to explore the mechaniams of environmental thyroid hormone disruptors. METHODS: cDNA microarray technique was used to analyze the gene expression of FRTL-5 cells of exponential phase treated by 2.0 microg/ml Sulphamethazine for 24 h. Total RNA from treated and untreated cells were labeled by Cy3 dCTP and Cy5 dCTP respectively. The ratios of Cy3/Cy5 were calculated in order to find the genes which expressed differently. RESULTS: There were 679 genes (approximately 7%, total 9753 genes) exhibiting different expression, in which 395 (4.0%) genes up-regulated and 284 (3.0%) genes down-regulated. These genes related to regulation of gene expression, regulation of cell cycle, metabolism in cells, and so on. CONCLUSION: The effect of Sulphamethazine on FRTL-5 cells may be related with a series of genes.