重组pcDNA4 His/Max人骨形态发生蛋白9真核表达载体的构建与鉴定  

Construction and identification of a recombinant pcDNA4 His/Max human bone morphogenetic protein eukaryotic expression vector

作　　者：江维[1] 胡侦明[2] 郝杰[2] 甘强[1] 

机构地区：[1]重庆医科大学,重庆市400016 [2]重庆医科大学附属第一医院骨科,重庆市400016

出　　处：《中国组织工程研究》2012年第24期4505-4508,共4页Chinese Journal of Tissue Engineering Research

摘　　要：背景:腺病毒临床应用存在安全隐患,利用真核表达载体表达蛋白为解决安全性问题提供了一种方法。目的:将人骨形态发生蛋白9的cDNA构建于pcDNA4 His/Max,得到重组真核表达载体pcDNA4 His/Max人骨形态发生蛋白9。方法:将已有的Padtrack-cmv-人骨形态发生蛋白9进行PCR扩增,电泳回收人骨形态发生蛋白9片段,将pcDNA4 His/Max用NotⅠ和KpnⅠ双酶切,得到pcDNA4His/Max酶切片段,连接人骨形态发生蛋白9和pcDNA4 His/Max片段得到重组质粒pcDNA4 His/Max人骨形态发生蛋白9,将该载体用DH5α转化,阳性克隆扩增及纯化、序列分析鉴定。结果与结论:通过PCR及序列分析证明pcDNA4 His/Max人骨形态发生蛋白9真核表达载体的人骨形态发生蛋白9基因长度为1.3kb,与报道的人骨形态发生蛋白9全长序列一致,无突变。结果证实,实验成功构建了pcDNA4 His/Max人骨形态发生蛋白9真核表达载体。BACKGROUND： Adenovirus mediated method has been used numerously in human bone morphogenetic protein 9 （hBMP-9） induced osteogenesis researches, but the security is the most important problem. Eukaryotic expressing vector is a way to solve this question. OBJECTIVE： To reconstruct a recombinant DNA pcDNA4 His/Max hBMP-9 eukaryotic expressing vector by amplifying hBMP9 gene and then cloning into pcDNA4 His/Max. METHODS： Padtrack-cmv-hBMP-9 was amplified by PCR, and hBMP-9 gene was retrieved by electrophoresis, pcDNA4 His/Max was digested by Not I , Kpn 1 and then the hBMP-9 gene was cloned into pcDNA4 His/Max. The recombinant plasmid was transformed by DH5a, clonal expansion, and purification, and then verified by sequencing. RESULTS AND CONCLUSION： The cloned hBMP-9 gene was 1.3 kb long, having the same length and sequence of the gene that human possessed. Eukaryotic expressing vector of pcDNA4 His/Max hBMP-9 has been constructed successfully

关 键 词：人骨形态发生蛋白9 真核表达载体 基因 腺病毒 阳性克隆 

分 类 号：R318[医药卫生—生物医学工程]