The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Expression of retinoic acid receptor β mediates retinoic acid -induced growth arrest and apoptosis in lung cancer cell line A549
Author(s): 
Pages: 5-9,14
Year: Issue:  1
Journal: JOURNAL OF SHANDONG UNIVERSITY(HEALTH SCIENCES)

Keyword:  维甲酸受体维甲酸肺肿瘤信号传导细胞周期蛋白类;
Abstract: 目的:研究RARβ在肺癌细胞的增殖、分化和诱导细胞凋亡中的作用.方法:应用脂质体将RARβ的表达载体pcDNA3.0-RARβ瞬时转染到RARβ表达下降的肺腺癌细胞A549中,观察形态学变化;应用流式细胞仪检测细胞凋亡率;RT-PCR检测细胞RARβ、p53、cdk4、cyclinD1的表达水平.结果:试验组出现细胞皱缩、粘附性降低、染色体凝集和边集现象,细胞凋亡率为65.8%,DNA断裂成片状.RT-PCR显示凋亡细胞中的RARβ表达明显升高(P<0.01)、p53的表达无明显变化、cdk4和cyclinD1的表达明显降低(P<0.01).结论:9-顺-维甲酸通过RARβ受体诱导细胞凋亡并且显著降低cdk4、cyclinD1的表达;9-顺-维甲酸不影响细胞中p53的表达;9-顺-维甲酸在p53表达正常的细胞中引起凋亡.
Related Articles
loading...