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t-PA基因慢病毒表达载体的构建及其在内皮祖细胞中的表达研究 被引量:1

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摘要 目的:构建t-PA基因慢病毒表达载体并转染脐血来源的内皮祖细胞,评估其转染后功能变化情况。方法:RT-PCR获得t-PA cDNA,将真核表达质粒pcDNA3.1(+)和t-PA基因片段分别双酶切,构建pc DNA3.1(+)/t-PA质粒。对其进行酶切鉴定和测序,使目的基因连接入载体质粒中,构建成重组慢病毒载体质粒,制备包装病毒质粒转染内皮祖细胞。倒置荧光显微镜下观察转染24h后内皮祖细胞中绿色荧光蛋白的表达情况,RT-qPCR和Western blot检测转染后t-PA基因的表达水平。采用Brdu标记细胞DNA、BCA蛋白定量、MTT分析法检测内皮祖细胞DNA合成能力、总蛋白含量和细胞存活率。结果:成功构建了含有t-PA基因cDNA序列的慢病毒表达载体p Lenti6.3-t-PA,DNA测序结果完全正确,倒置荧光显微镜下可见绿色荧光蛋白表达,内皮祖细胞转染重组慢病毒后t-PA表达水平比未转染组显著增高(P<0.01)。t-PA慢病毒表达载体转染内皮祖细胞后,内皮祖细胞DNA合成能力、细胞总蛋白含量、细胞存活率均较对照组无明显变化。结论:成功构建t-PA基因慢病毒表达系统,转染内皮祖细胞后对其DNA合成、总蛋白合成、细胞存活率无明显影响。
机构地区 长沙市第一医院
出处 《按摩与康复医学》 2018年第8期62-65,共4页 Chinese Manipulation and Rehabilitation Medicine
基金 湖南省卫生计生委科研计划课题项目资助(B20180471) 长沙市科技局指导性项目(K15ZD022-33)
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