[1]魏川江,刘娴,王策,等.miR-221在脑胶质瘤中的表达及调控关系[J].中国临床神经外科杂志,2017,(07):463-466.[doi:10.13798/j.issn.1009-153X.2017.07.006]
 WEI Chuan-jiang,LIU Xian,WANG Ce,et al.Expression of miRNA - 221 in brain gliomas and its effects on glioma cell line poliferation[J].,2017,(07):463-466.[doi:10.13798/j.issn.1009-153X.2017.07.006]
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miR-221在脑胶质瘤中的表达及调控关系()
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《中国临床神经外科杂志》[ISSN:1009-153X/CN:42-1603/TN]

卷:
期数:
2017年07期
页码:
463-466
栏目:
论著
出版日期:
2017-07-20

文章信息/Info

Title:
Expression of miRNA - 221 in brain gliomas and its effects on glioma cell line poliferation
文章编号:
1009-153X(2017)07-0463-04
作者:
魏川江刘娴王策董白晶常英男张尧赵天书
518106 广东,深圳市光明新区人民医院神经外科(魏川江);150001 哈尔滨,哈尔滨医科大学附属第四医院神经外科(刘 娴、王 策、董白晶、常英男、赵天书);100093 北京,北京三博脑科医院神经外科(张 尧)
通讯作者:赵天书,E-mail:zhaotianshufmmu@163.com
Author(s):
WEI Chuan-jiang1 LIU Xian2 WANG Ce2 DONG Bai-jing2 CHANG Ying-nan2 ZHANG Yao3 ZHAO Tian-shu2.
1. Department of Neurosurgery, People’s Hospital of Guangming New District, Shenzheng 518107, China;
2. Department of Neurosurgery, The Fourth Affiliated Hospital, Harbin Medical University, Harbin 150001, China;
3. Department of Neurosurgery, Beijing Sanbo Brain Hospital,No.11 Clinical College of Medicine, Capital Medical University, Beijing 100093, China
关键词:
1009-153X(2017)07-0463-04
Keywords:
Human glioma MiRNA-221 Proliferation Expression PRDM2
分类号:
R 739.41; Q 786
DOI:
10.13798/j.issn.1009-153X.2017.07.006
文献标志码:
A
摘要:
目的 探讨miR-221在脑胶质瘤组织中的表达变化及其对胶质瘤细胞系细胞增殖的影响。方法 收集2014年1月至2015年8月手术切除的胶质瘤标本123例及颅脑损伤行内减压的正常脑组织36例,荧光定量PCR法检测miR-221表达水平。按照miR-221的表达水平将123例胶质瘤病人分为高表达组(miR-221/U6的相对表达量≥0.6,72例)和低表达组(miR-221/U6的相对表达量<0.6,51例),采用Kplan-Meier法分析miR-221表达水平与胶质瘤生存时间的关系。MTT法检测miR-221对胶质瘤细胞系U251、U87细胞增殖的影响,双荧光试验和蛋白印迹法、PCR方法筛选和验证miR-221的靶基因。结果 胶质瘤组织miR-221表达水平明显高于正常脑组织(P<0.01);高级别胶质瘤miR-221表达水平明显低于低级别胶质瘤(P<0.01)。miR-221低表达胶质瘤病人生存时间较高表达病人明显延长(P<0.05)。敲除miR-221基因显著抑制U251、U87细胞增殖(P<0.01);而且,U251、U87细胞敲除miR-221基因后,正性调节区锌指蛋白2(PRDM2)mRNA和蛋白表达水平明显增高(P<0.01)。结论 miR-221在胶质瘤中异常高表达,可作为胶质瘤预后判断的生物标志物;PRDM2可能是miR-221的靶基因。 【关键词】胶质瘤;miR-221;
Abstract:
Objective To explore the expression of miRNA-221 in human gliomas and its effect on glioma cell line proliferation. Methods The expression levels of miRNA-221 were determined by qRT-PCR in 123 samples of glioma tissues and 36 samples of normal cerebral tissues. The effects of miRNA-221 on U87 and U251 cell proliferation were determined by MIT tests. Dual luciferase assay, qRT-PCR and western blot were used to validate the targets of miRNA-221. Results The expression level of miRNA-221 (0.62±0.2) was significantly higher in the glioma tissues than that (0.37±0.13) in the normal cerebral tissues (P<0.01). The survival time was significantly shorter in 72 glioma patients with higher expression of miRNA-221 than that in 51 glioma patients with lower expression of miRNA-221 after the operation (P<0.01). The over expression of miRNA-221 significantly promoted U251 and U87 cells proliferations (P<0.05). The depletion of miRNA-221 caused the increases in mRNA and protein of PRDM2 expressions (P<0.05) in the U251 and U87 cells. Conclusions The upregulation of miRNA-221 may be used as one of diagnostic indexes of human glioma. PRDM2 is one of target genes of miRNA-221.

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备注/Memo

备注/Memo:
基金项目:黑龙江省卫生计生委科研课题(2016-129);哈尔滨市科技人才创新基金项目(2016RAQXJ173)
更新日期/Last Update: 2017-07-25