中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (5): 733-738.doi: 10.3969/j.issn.2095-4344.2015.05.014

• 器官移植动物模型 organ transplantation and animal model • 上一篇    下一篇

重组9型腺相关病毒载体转染动脉粥样硬化模型小鼠主动脉:最佳在体表达时间点的确定

谢  佳,杨毅宁,马依彤,李晓梅,陈邦党,刘  芬,陈清杰,翟  慧   

  1. 新疆医科大学第一附属医院心脏中心,新疆维吾尔自治区乌鲁木齐市  830054
  • 修回日期:2015-01-09 出版日期:2015-01-30 发布日期:2015-03-02
  • 通讯作者: 杨毅宁,博士,主任医师,教授,博士生导师,新疆医科大学第一附属医院心脏中心,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:谢佳,女,1989年生,河南省西平县人,汉族,新疆医科大学在读硕士,主要从事冠状动脉粥样硬化性心脏病基础及临床方面的研究。
  • 基金资助:

    国家自然科学基金项目(81160042)

Recombinant adeno-associated virus serotype 9 transfection of atherosclerosis mice: determination of the optimal expression time in vivo

Xie Jia, Yang Yi-ning, Ma Yi-tong, Li Xiao-mei, Chen Bang-dang, Liu Fen, Chen Qing-jie, Zhai Hui   

  1. Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Revised:2015-01-09 Online:2015-01-30 Published:2015-03-02
  • Contact: Yang Yi-ning, M.D., Chief physician, Professor, Doctoral supervisor, Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Xie Jia, Studying for master’s degree, Heart Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81160042

摘要:

背景:重组9型腺相关病毒载体对心肌组织具有较高的亲和力,关于携带增强型绿色荧光蛋白报告基因的重组9型腺相关病毒(recombinant adeno-associated virus serotype 9-enhanced green fluorescent protein,rAAV9-eGFP)在动脉粥样硬化模型小鼠主动脉中的表达情况还不确定。
目的:探索携带rAAV9-eGFP转染动脉粥样硬化模型小鼠主动脉最佳的在体表达时间点。
方法:给予30只ApoE-/-小鼠连续高脂饮食饲养16周建立为动脉粥样硬化模型,然后随机取其中25只通过尾静脉注射转染5.0×1011 vg(virus genomes)rAAV9-eGFP,另5只作为对照组给予生理盐水。转染病毒的动脉粥样硬化模型小鼠分别于转染后14,21,28,35,60 d处死,留取主动脉组织,应用激光共聚焦显微镜观察增强型绿色荧光蛋白荧光表达情况,Western blot法检测主动脉增强型绿色荧光蛋白的蛋白表达,观察增强型绿色荧光蛋白体内表达情况,确定病毒在体表达最佳时间点。
结果与结论:rAAV9-eGFP可有效转染动脉粥样硬化模型小鼠主动脉血管,增强型绿色荧光蛋白可在主动脉组织中表达,其表达强度随着转染时间的增加而逐渐增强,于转染35 d时表达最强,60 d趋于稳定,各时间点主动脉斑块中增强型绿色荧光蛋白表达的水平差异有显著意义(P < 0.001)。表明rAAV9-eGFP可有效在动脉粥样硬化模型ApoE-/-小鼠主动脉中表达,rAAV9-eGFP可成为动脉粥样硬化治疗的最佳载体。



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

关键词: 实验动物, 心脏及血管损伤模型, 动脉粥样硬化, 组织构建, 9型腺相关病毒, 主动脉, 转染, ApoE-/-小鼠, 国家自然科学基金

Abstract:

BACKGROUND: Recombinant adeno-associated virus serotype 9 has a high affinity in myocardial tissue, and the expression of recombinant adeno-associated virus serotype 9-enhanced green fluorescent protein (rAAV9-eGFP) in the aorta of atherosclerosis mice is not clear.
OBJECTIVE: To explore the optimal time point of rAAV9-eGFP expression in the aorta of atherosclerosis mice.
METHODS: Atherosclerosis model was established with high-fat diet in 30 ApoE-/- mice for 16 weeks. Among them, 25 mice were injected with 5.0×1011 vg (virus genomes) rAAV9-eGFP through the tail vein, while the remaining 5 mice were injected with saline, serving as the control group. The virus-transfected mice were killed at 14, 21, 28, 35 and 60 days after transfection, and aortic tissue was harvested. The expression of enhanced green fluorescent protein was detected with laser scanning confocal microscope. Western blot assays were used to detect the expression of enhanced green fluorescent protein in aorta. The expression of enhanced green fluorescent protein in vivo was observed and the optimal expression time point was determined.
RESULTS AND CONCLUSION: rAAV9-eGFP effectively transfected the aorta of atherosclerosis mice, enhanced green fluorescent protein was expressed in aortic tissue, and the expression intensity increased gradually with the increasing transfection time. The highest expression level was found at 35 days after transfection and then maintained stable at 60 days. There were significant differences at different time points after transfection (P < 0.001). These data indicate that rAAV9-eGFP can be effectively expressed in the aorta of atherosclerosis ApoE-/- mice and rAAV9-eGFP can be regarded as the optimal vector in the treatment of atherosclerosis.



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

Key words: Viruses, Enhanced Green Fluorescent Protein, Models, Animal, Atherosclerosis

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