NP9对鼻咽癌细胞系CNE1基因表达谱的影响

目的： 确定NP9表达对鼻咽癌CNE1细胞基因表达谱的影响。方法: 稳定表达NP9基因和稳定转染空载体的CNE1细胞分别作为基因芯片分析的实验组和对照组，用高通量的基因芯片筛选实验组细胞的差异表达基因，荧光定量逆转录PCR验证部分基因表达差异。结果: 所分析的14 500个基因中，266个检测出有表达差异，其中82个基因呈现表达上调（RA＞1），184个基因显示表达下调（RA＜1）。显著上调和下调的基因分别为34个（RA＞1.5）和75个（RA＜1.5）。结论: NP9基因的表达导致了CNE1细胞中与细胞周期调控、细胞增殖和分化、细胞信号转导、细胞黏附相关基因表达的改变，为NP9的功能及分子机制研究提供了新的线索。

Effect of NP9 on gene expression profile of NPC cell line CNE1

AIM: To identify the gene expression profiles of CNE1 cells stably transfected with NP9 expressing plasmid, and to explore the potential molecular function of NP9 gene. METHODS: CNE1 cells stably expressing NP9 protein and CNE1 cells transfected with empty vector were used as test and control. Differentially expressed genes were screened with high- throughout human genome array. Differential expression of 6 genes was analyzed with quantitative RT-PCR. RESULTS: Of all the 14 500 human genes in array, 266 genes were revealed differential expression between test and control , of which 82 genes (RA>1)were up-regulated in test and 184 genes (RA<1) were down-regulated. 34 genes and 75 genes were found distinctively up-regulation (RA>1.5) and down-regulation (RA<1.5),respectively. CONCLUSION: NP9 expression in CNE1 cells leads to changes of some genes involved in regulation of cell cycle, cell proliferation and differentiation, cell signal transduction, cell adhesion. Some new clues may be provided for further studying the potential function and molecular mechanism of NP9 gene.