中国组织工程研究

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慢病毒载体构建小鼠CMKLR1基因缺陷性血管平滑肌细胞系

熊  玮1,董少红1,张  键2,李江华1,吴美善1,廖碧红1,庞新利1,罗林杰1   

  1. 1暨南大学第二临床医学院 深圳市人民医院心内科,广东省深圳市  518020;2中国科学院深圳先进技术研究院,广东省深圳市  518055
  • 出版日期:2015-05-14 发布日期:2015-05-14
  • 通讯作者: 董少红,博士,主任医师,暨南大学第二临床医学院 深圳市人民医院心内科,广东省深圳市 518020
  • 作者简介:熊玮,男,1975年生,湖北省当阳市人,汉族,2012年暨南大学毕业,博士,副主任医师,主要从事冠心病方面的研究。
  • 基金资助:

    深圳市科技创新重点资助课题(201201022)

Construction of mouse CMKLR1 gene knock-down vascular smooth muscle cell lines mediated by lentivirus vector 

Xiong Wei1, Dong Shao-hong1, Zhang Jian2, Li Jiang-hua1, Wu Mei-shan1, Liao Bi-hong1, Pang Xin-li1,
Luo Lin-jie1   

  1. 1Department of Cardiology, Second Clinical Medical College of Jinan University/Shenzhen People’s Hospital, Shenzhen 518020, Guangdong Province, China; 2Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong Province, China
  • Online:2015-05-14 Published:2015-05-14
  • Contact: Dong Shao-hong, M.D., Chief physician, Department of Cardiology, Second Clinical Medical College of Jinan University/Shenzhen People’s Hospital, Shenzhen 518020, Guangdong Province, China
  • About author:Xiong Wei, M.D., Associate chief physician, Department of Cardiology, Second Clinical Medical College of Jinan University/Shenzhen People’s Hospital, Shenzhen 518020, Guangdong Province, China
  • Supported by:

    the Scientific Innovation Plan of Shenzhen, No. 201201022

摘要:

背景:趋化素在动脉粥样硬化时的表达水平上调,趋化素及其受体CMKLR1可能参与了动脉粥样硬化的病理过程。
目的:建立CMKLR1基因缺陷性小鼠血管平滑肌细胞株。
方法:以小鼠CMKLR1基因mRNA序列作为干扰靶点,设计3组靶向CMKLR1基因的shRNA序列,构建慢病毒载体,筛选出干扰最佳的shRNA,在293T细胞对慢病毒进行包装和滴度测定。体外培养小鼠血管平滑肌细胞,转染慢病毒形成CMKLR1基因缺陷性血管平滑肌细胞株,用real-time PCR检测感染慢病毒后细胞中CMKLR1 mRNA水平。
结果与结论:基因测序结果表明慢病毒载体构建成功,慢病毒的滴度约为8.7×106 TU/mL,pLVX-shRNA3对CMKLR1基因的抑制效果最显著(P < 0.001)。将pLVX-shRNA3转染至血管平滑肌细胞中形成基因缺陷细胞株,用real time PCR血管平滑肌细胞中CMKLR1 mRNA水平,该细胞株中CMKLR1 mRNA水平显著下降(P < 0.001),表明慢病毒介导的siRNA可有效沉默小鼠血管平滑肌细胞中CMKLR1基因的表达。

关键词: 组织构建, 组织工程, 血管平滑肌细胞, 趋化素, CMKLR1, RNA干扰, 慢病毒

Abstract:

BACKGROUND: Levels of chemerin are elevated in arteriosclerosis, indicating chemerin and its receptor (CMKLR1) may participate in the pathological process of arteriosclerosis.
OBJECTIVE: To establish the stable CMKLR1 gene knock-down mouse vascular smooth muscle cell lines.
METHODS: Three shRNA sequences targeting the coding region of mouse CMKLR1 mRNA were synthesized and employed to construct lentivirus recombinant vectors. The best pLVX-shRNA was picked up to package recombinant lentivirus in 293T cells, which were infected in cultured mouse vascular smooth muscle cells. The CMKLR1 mRNA level of vascular smooth muscle cells was verified by real-time PCR.
RESULTS AND CONCLUSION: The lentiviral vectors were successfully constructed, which was confirmed by DNA sequencing. The titer of lentivirus reached 8.7×106 TU/mL in the packaging cells, and pLVX-shRNA3 showed the most significant interfering effects on CMKLR1 gene (P < 0.001). The pLVX-shRNA3 was chosen to establish the stable CMKLR1 gene knock-down vascular smooth muscle cell lines, in which the expression of CMKLR1 mRNA was also significantly inhibited shown on real-time PCR (P < 0.001). We finally confirmed that the expression of CMKLR1 gene can be effectively silenced by lentivirus-mediated siRNA in mouse mouse vascular smooth muscle cells.
 

Key words: Myocytes, Smooth Muscle, Chemotactic Factors , RNA Interference

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