南方医科大学学报 ›› 2004, Vol. 24 ›› Issue (03): 260-263.

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人骨形态发生蛋白12前体蛋白cDNA的克隆及序列分析

路艳蒙1, 付文玉2, 朴英杰1   

  1. 1. 第一军医大学中心实验室, 广东, 广州, 510515;
    2. 潍坊医学院组织胚胎学教研室, 山东, 潍坊, 261041
  • 出版日期:2004-03-20 发布日期:2004-03-20
  • 基金资助:
    收稿日期:2003-8-22。
    基金项目:“973”国家重点基础研究发展规划资助项目(G1999054038);国家自然科学基金(30070368);广州市科委科技攻关项目(2000-Z- 017-01-05)
    作者简介:路艳蒙(1970- ),女,2002年毕业于第一军医大学,博士,讲师,电话:020-61640114-89057,E-mail:tse@fimmu.com

Cloning and sequence analysis of the preprotein cDNA of human bone morphognetic protein 12

LU Yan-meng1, FU Wen-yu2, PIAO Ying-jie1   

  1. 1. 第一军医大学中心实验室, 广东, 广州, 510515;
    2. 潍坊医学院组织胚胎学教研室, 山东, 潍坊, 261041
  • Online:2004-03-20 Published:2004-03-20

摘要: 目的 克隆人骨形态发生蛋白12前体蛋白的基因。方法 根据Genbank人骨形态发生蛋白12的基因序列合成两条引物,从人胎盘组织中提取总RNA,用反转录聚合酶链反应(RT-PCR)技术扩增出长920 bp编码人骨形态发生蛋白12(BMP12)前体蛋白的基因序列。将所得的基因片段插入载体pTARGETTM质粒中并转化大肠杆菌JM109,提取重组质粒进行鉴定并测序。结果 RT-PCR产物琼脂糖凝胶电泳显示一长约920 bp的条带,阳性克隆质粒经PCR扩增出约920 bp的片段,全自动DNA测序结果表明和Genbank中的序列完全相符。结论 通过RT-PCR可从人胎盘组织中成功地克隆出人BMP12前体蛋白基因,基因序列完全正确。

Abstract: Objective To clone the cDNA of the preprotein cDNA of human bone morphogenetic protein 12 (hBMP12). Methods Two primers were designed according to hBMP12 sequence reported in GenBank. The hBMP12 preprotein cDNA was obtained by reverse transcriptional (RT)-PCR from the mRNA extracted from human placenta, followed by cloning into pTARGETTM plasmid and sequence analysis of the plasmid pTARGETTM-BMP12. Results DNA agarose gel electrophoresis showed that the product of RT-PCR was about 920 bp, as was consistent with the result of PCR detection of the recombinant plasmid. The result of sequence analysis was in agreement with the reported hBMP12 sequence in GenBank. Conclusion The preprotein of hBMP12 cDNA has been successfully cloned with correct sequence.

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