摘要
目的探讨不同浓度转化生长因子(TGF-β)对内皮细胞锌指基因ZNF580表达的影响。方法以不同浓度(0.25~4 ng/ml)的TGF-β刺激EA.hy926内皮细胞12 h,提取细胞总RNA,通过半定量逆转录聚合酶链反应(RT-PCR)分析ZNF580基因在内皮细胞中的表达情况。结果成功提取内皮细胞总RNA并进行RT-PCR反应;当TGF-β浓度从0.25~2 ng/ml逐渐增加时,ZNF580的表达呈逐渐下降趋势(P【0.05,P】0.01);但继续增加TGF-β刺激浓度至4 ng/ml,ZNF580的表达又有所回升(P【0.05)。结论随TGF-β刺激浓度逐渐升高,EA.hy926内皮细胞中ZNF580基因表达呈先降低后升高变化,表明ZNF580很可能是受TGF-β信号转导通路调控的核转录因子,ZNF580和Smad2间的相互作用及ZNF580转录活性的改变可能进一步影响下游相应靶基因的转录,进而影响内皮细胞的功能。
Objective To investigate the effects of different dosage of transforming growth factor(TGF)-β on ZNF580 gene expression in EA.hy926 endothelial cell.Methods EA.hy926 endothelial cells were stimulated by different dosage of(0.25 ~ 4 ng / ml) TGF-β and collected after 12 h.Then the whole RNA was extracted.ZNF580 gene expression was analyzed by reverse transcriptase polymerase chain reaction(RT-PCR).Results With the increasing of TGF-β,the expression of ZNF580 was downregulated gradually.When the concentration of TGF-β was increased to 4 ng / ml,the expression of ZNF580 was upregulated.Conclusions ZNF580 might be one of the nuclear transcription factors regulated by TGF-β signal transduction pathway.The interaction of ZNF580 with Smad2 and the variation of ZNF580 expression could affect the transcription activity of downstream target genes and the function of endothelial cells.
出处
《中国老年学杂志》
CAS
CSCD
北大核心
2014年第7期1852-1854,共3页
Chinese Journal of Gerontology
基金
国家自然科学基金项目(81170106)
武警医学院面上项目(WYM2010-5)
