具干细胞特性食管癌耐放射细胞株基因表达分析

被引:10
作者
苏华芳
万秋燕
邹燕
张力
李海英
景钊
吴式琇
机构
[1] 温州医学院附属第一医院
关键词
食管肿瘤; 辐射耐受性; 肿瘤干细胞; 基因表达; cDNA芯片;
D O I
暂无
中图分类号
R735.1 [食管肿瘤];
学科分类号
100403 [营养与食品卫生学];
摘要
[目的]比较具干细胞特性食管癌耐放射细胞株与其亲本基因表达水平的差异。[方法]Agilent4×44K人全基因组芯片检测具干细胞特性食管癌耐放射细胞株与其亲本细胞,GeneSpring GX 10.0.2数据分析挑选差异表达基因,进一步对差异表达基因进行GO分析和干细胞密切相关的信号通路分析,Real-time PCR验证芯片结果。[结果]两组细胞有明显不同的表达谱,差异表达基因多达2246个(fold change cut-off≥2)。在分子功能中,信号感应激活最高,占75.11%;在生物过程中,细胞进程、生物调节分别占35.94%和25.8%;在细胞组分方面,细胞、胞内区、跨膜区的变化比较显著。ALDH1基因表达发生了改变,其中ALDH1A3最显著。Hedgehog通路,PTCH1下调,而GLI2上调。BMP-TGFβ通路信号转导中,MMP3、MMP9上调,FOXL1、BMP4、TGFB2、TGFB3下调。Notch通路相关信号基因均表现为下调。Wnt通路信号转导变化比较复杂,其中WNT4、WNT8B、DKK2、CTNNB1改变超过2倍。Real-time PCR验证芯片结果可靠。[结论]具干细胞特性的食管癌放射抵抗细胞株与其亲本基因表达水平有明显差异。
引用
收藏
页码:40 / 45
页数:6
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