陈星, 糜若然, 伊铁忠, 瞿全新, 熊冬生, 邵晓枫, 姜文国, 许元富, 杨纯正, 郑曙民. 人血管内皮生长因子C基因真核表达载体的构建及鉴定[J]. 中国肿瘤临床, 2006, 33(11): 625-628.
引用本文: 陈星, 糜若然, 伊铁忠, 瞿全新, 熊冬生, 邵晓枫, 姜文国, 许元富, 杨纯正, 郑曙民. 人血管内皮生长因子C基因真核表达载体的构建及鉴定[J]. 中国肿瘤临床, 2006, 33(11): 625-628.
Chen Xing, Mi Ruo-ran, Yi Tiezhong, . Construction of the Eukaryotic Expression Vector for Human VEGF-C[J]. CHINESE JOURNAL OF CLINICAL ONCOLOGY, 2006, 33(11): 625-628.
Citation: Chen Xing, Mi Ruo-ran, Yi Tiezhong, . Construction of the Eukaryotic Expression Vector for Human VEGF-C[J]. CHINESE JOURNAL OF CLINICAL ONCOLOGY, 2006, 33(11): 625-628.

人血管内皮生长因子C基因真核表达载体的构建及鉴定

Construction of the Eukaryotic Expression Vector for Human VEGF-C

  • 摘要: 目的 :克隆血管内皮生长因子C(VascularEndothelialGrowthFactorC)功能片段的cDNA,构建人VEGF-C基因的真核表达载体,以便进一步研究VEGF-C在宫颈癌中表达的意义及在淋巴管生长及转移中的作用。 方法 :根据人VEGF-CcDNA序列,设计合成二对特异性引物,第一对5'端含有EcoRⅠ及第二对3'端含有XhoⅠ酶切位点。运用RT-PCR法克隆人MDA-MB231中的VEGF-CcDNA部分编码序列(CDS);经双酶切后将其克隆入真核表达载体pcDNA3.1(+),重组质粒在处于感受态的大肠杆菌DH5α中扩增,纯化。通过PCR和双酶切鉴定阳性重组子及进行基因序列的测定。 结果 :用RT-PCR克隆到VEGF-CcDNA部分CDS;PCR和双酶切鉴定阳性重组子,显示有人VEGF-CcDNA编码序列,基因序列测定显示重组质粒上插入的人VEGF-C序列正确。 结论 :从富含VEGF-C的人MDA-MB231细胞系中克隆得到的VEGF-C基因功能片段cDNA,成功构建了人真核表达载体pcDNA3.1(+)/VEGF-C。

     

    Abstract: Objective :To clone a functional human vascular endothelial growth factor C (VEGF-C) cDNA from the MDA-MB231 cell line and to construct a eukaryotic expression vector with this geneto use for further study of the role of the VEGF- C gene in lymphatic dissemination of cervical cancer atthe gene level. Methods :Based on the human VEGF-C cDNA sequence, two pairs of specific primerswere designed and constructed which contained an EcoRI digestion site in the first primer at the 5' endand an XhoⅠ digestion site in the second primer at the 3'end. Reverse transcription polymerase chainreaction (RT-PCR) was employed to clone VEGF-C cDNA from the human MDA-MB231 cell line. Theproduct of RT-PCR was digested with EcoRⅠ, SphⅠ and XhoⅠ. After purifying the product, it wasligated into the eukaryotic expression vector pcDNA3.1(+) that had been digested with EcoRⅠ and XhoⅠ. The recombinant plasmid pcDNA3.1 (+) was first propagated in Escherichia coli DH5α , and then itwas extracted and purified. The recombinant plasmid was confirmed with PCR and digestion with EcoRⅠ and XhoⅠ in addition to DNA sequence analysis. Results :Human VEGF-C cDNA was amplifiedfrom MDA-MB231. The recombinant pcDNA3.1 (+)/VEGF-C vector contained correct nucleotide se-quence for the full length human VEGF-C cDNA fragment by PCR, restriction digestion and DNA se-quence analysis. Conclusion :A eukaryotic expression vector containing full length human VEGF-C inpcDNA3.1 (+) has been successfully constructed.

     

/

返回文章
返回