中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (37): 5560-5566.doi: 10.3969/j.issn.2095-4344.2016.37.013

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

构建线粒体钙离子摄入蛋白1慢病毒表达载体及在H9C2细胞中的应用

荆  哲1,刘峰舟2,刘  燕1,陈永清1   

  1. 1解放军兰州军区兰州总医院心内科,甘肃省兰州市  730050;2西京医院心内科,陕西省西安市  710032
  • 出版日期:2016-09-09 发布日期:2016-09-09
  • 作者简介:荆哲,男,1986年生,浙江省绍兴市人,汉族,2010年第二军医大学毕业,医师,主要从事心血管疾病研究。

Construction of lentiviral vector carrying mitochondrial calcium uptake 1 and its use in infected H9C2 cells

Jing Zhe1, Liu Feng-zhou2, Liu Yan1, Chen Yong-qing1   

  1. 1Department of Cardiology, Lanzhou General Hospital of Lanzhou Military Region of Chinese PLA, Lanzhou 730050, Gansu Province, China; 2Department of Cardiology, Xijing Hospital, Xi’an 710032, Shaanxi Province, China
  • Online:2016-09-09 Published:2016-09-09
  • About author:Jing Zhe, Physician, Department of Cardiology, Lanzhou General Hospital of Lanzhou Military Region of Chinese PLA, Lanzhou 730050, Gansu Province, China

摘要:

文章快速阅读:

文题释义:
线粒体功能紊乱:主要以线粒体钙稳态失衡为角度阐述线粒体功能紊乱在细胞生物学功能中所发挥的作用。细胞线粒体钙主要与细胞胞浆钙稳态、线粒体三羧酸循环关键酶、细胞自噬、生存、死亡以及线粒体的空间位置等关系密切。
线粒体钙离子单向转运复合体:目前研究发现,该复合体主要以构成线粒体内膜孔道的线粒体钙离子单向转运蛋白,以及调剂其活性的MICU1,MICU2,MCUR1及EMRE组成,共同完成细胞线粒体钙摄取的精密调节。
摘要
背景:
线粒体钙离子摄入蛋白1(mitochondrial calcium uptake 1, MICU1)是维持细胞线粒体钙稳态的重要分子,MICU1对线粒体钙稳态的调节可能在糖尿病心肌病的发生及发展中起着重要作用,但目前机制尚不明确。
目的:构建MICU1基因的慢病毒表达载体,产毒感染H9C2细胞,评价MICU1基因在H9C2细胞中的表达效果,为后续在细胞水平研究糖尿病心肌病的发生及发展建立平台。
方法:PCR提取H9C2细胞MICU1基因,SpeⅠ、EcoRⅠ双酶切后,将MICU1基因片段插入慢病毒载体pRRLsin.CMV.eGFP中,构建慢病毒表达质粒pRRLsin.CMV.MICU1-eGFP。使用pCMVDR8.91、pCMV-VSVG共转染于293T细胞中包装产毒,用于感染H9C2细胞。通过RT-PCR及Western blot检测感染后H9C2细胞中MICU1 mRNA及蛋白的表达。共聚焦显微镜检测Rhod-2染色H9C2细胞后线粒体钙水平。
结果与结论:①MICU1基因成功插入pRRLsin.CMV.eGFP慢病毒表达质粒;②转染pRRLsin.CMV.MICU1-eGFP慢病毒表达质粒后,可见293T细胞表达绿色荧光蛋白,并且MICU1的蛋白表达明显升高;③病毒液感染H9C2细胞后,MICU1的蛋白及mRNA水平较未感染组及空质粒包装组明显升高;④Rhod-2染色后观察发现,MICU1能够明显增强线粒体钙水平;⑤结果表明,pRRLsin.CMV.MICU1-eGFP慢病毒能够高效感染H9C2细胞,为构建永生化细胞系奠定基础。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-6829-4901(荆哲)

关键词: 组织构建, 组织工程, H9C2细胞, 线粒体钙离子摄入蛋白1(MICU1), 慢病毒载体, 病毒包装,

Abstract:

BACKGROUND: Mitochondrial calcium uptake 1 (MICU1) is one of the important molecules to maintain the mitochondrial calcium homeostasis. The regulation of MICU1 to mitochondrial calcium homeostasis may play an important role in diabetic cardiomyopathy, but the underlying mechanism remains unclear.
OBJECTIVE: To construct a lentiviral vector carrying MICU1 gene to transfect H9C2 cells, and then to assess MICU1 level in H9C2 cells thereby establishing a platform for researching the occurrence and development of diabetic cardiomyopathy at a cellular level.
METHODS: DNA fragments of MICU1 were amplified by PCR, cleaved with Spe I, EcoR I and cloned into the lentiviral vector pRRLsin.CMV.eGFP to construct pRRLsin.CMV.MICU1-eGFP vector. 293T cells were co-transfected with recombined pCMVDR8.91 and pCMV-VSVG to produce pRRLsin.CMV.MICU1-eGFP lentiviral viruses, and then used to infect H9C2 cells. mRNA and protein expressions of MICU1 in the transfected H9C2 cells were evaluated by real-time PCR and western blot assay. Mitochondrial calcium level in Rhod-2-stained H9C2 cells was tested under confocal microscope.
RESULTS AND CONCLUSION: The recombinant inducible lentiviral vector containing MICU1 gene was successfully constructed. 293T could express green fluorescent protein with increased MICU1 level after pRRLsin.CMV.MICU1-eGFP transfection. The mRNA and protein expressions of MICU1 in the infected H9C2 group were obviously up-regulated compared with the other groups. MICU1 could remarkably improve the mitochondrial calcium level under Rhod-2 staining. These results show that pRRLsin.CMV.MICU1-eGFP lentiviral viruses are efficient to transfect H9C2 cells, which will be powered to lay a foundation for the immortalized cell line establishment.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Lentivirus Infections, Mitochondrial Proteins, Myocytes, Cardiac

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