miR-497 over-expression inhibits epithelial-mesenchymal transition in lung cancer A549 cells by targeting cyclin E1
DOI:10.3872/j.issn.1007-385x.2020.11.006
- VernacularTitle:过表达miR-497靶向细胞周期蛋白E1抑制肺癌A549细胞的上皮间质转化
- Author:
QI Jianxu
1
;
WANG Xinxiao
1
;
LI Ying
2
,
3
;
OU Zongxing
1
Author Information
1. a. Department of Respiratory Medicine
2. b. Department of Critical Medicine, Haikou People'
3. s Hospital, Haikou 570000, Hainan, China
- Publication Type:Journal Article
- Keywords:
miR-497;细胞周期蛋白E1;肺癌;A549细胞;上皮间质转化
- From:
Chinese Journal of Cancer Biotherapy
2020;27(11):1239-1245
- CountryChina
- Language:Chinese
-
Abstract:
[摘 要] 目的:探讨过表达miR-497靶向细胞周期蛋白E1(cyclin E1,CCNE1)对肺癌A549细胞上皮间质转化(epithelial-mesenchymal transition,EMT)的影响。方法:常规培养人肺癌A549细胞,细胞实验分为正常组(不加干预)、对照组(转染miR-497 mimics-NC)、实验组(转染miR-497 mimics)。采用Transwell小室实验、免疫荧光染色、qPCR、Western blotting法分别检测各组细胞迁移和侵袭能力、蛋白间质标志物α-SMA和上皮标志物E-cadherin的表达、miR-497和CCNE1的表达水平,荧光素酶基因基因报告实验验证miR-497和CCNE1的靶向关系。结果:与对照组和正常组相比,实验组A549细胞迁移和侵袭的数量明显减少(均P<0.05),细胞的间质标志物α-SMA的绿色荧光强度明显减弱[(36.95±5.81) vs (98.69±2.36)、(97.94±2.63),均P<0.05],上皮标志物E-cadherin的绿色荧光强度明显增强[(388.41±10.93) vs (100.95±6.37)、(102.55±3.18),均P<0.05],miR-497的表达明显升高(均P<0.05),CCNE1的表达均明显下降(均P<0.05)。miR-497能够靶向调控CCNE1的表达。结论:在肺癌A549细胞中miR-497能够靶向调控CCNE1的表达,上调miR-497的表达后能明显抑制A549细胞迁移和侵袭能力,影响EMT相关蛋白的表达。
- Full text:20201106.pdf