The present study is aimed at studying the gene for TIMP-3,a mammalian tissue inhibitor,by constructing a recombinant eukaryotic cell vector for gene therapy in human breast cancer.We obtained the TIMP-3 gene from the...The present study is aimed at studying the gene for TIMP-3,a mammalian tissue inhibitor,by constructing a recombinant eukaryotic cell vector for gene therapy in human breast cancer.We obtained the TIMP-3 gene from the human placent by RT-PCR.TIMP-3 gene was subcloned into pcDNA3.1 vetor from pMD18T vector by means of gene cloning to construct pcDNA3.1 recombinant vector.Human breast cancer cell line MDA-MB-453 was transfected with pcDNA3.1-TIMP3 recombinant vector using lipofectamine reagent.Then the expression of TIMP-3 and the effect on the metastasis of MDA-MB-453 were examined.The correct construction of pcDNA-TIMP3 was identified by means of restriction enzyme analysis,PCR amplication and nucleotide sequencing.Western blotting showed that the transfected cells were able to express TIMP-3, indicating that our construction of the pcDNA-TIMP3 eukaryotic expression vector was constructed successfully.Our experiments further indicated that the potential of metastasis was significantly reduced for the transfected cell line MDA-MB-453.Cellular & Molecular Immunology.2004;1(4):308-310.展开更多
文摘The present study is aimed at studying the gene for TIMP-3,a mammalian tissue inhibitor,by constructing a recombinant eukaryotic cell vector for gene therapy in human breast cancer.We obtained the TIMP-3 gene from the human placent by RT-PCR.TIMP-3 gene was subcloned into pcDNA3.1 vetor from pMD18T vector by means of gene cloning to construct pcDNA3.1 recombinant vector.Human breast cancer cell line MDA-MB-453 was transfected with pcDNA3.1-TIMP3 recombinant vector using lipofectamine reagent.Then the expression of TIMP-3 and the effect on the metastasis of MDA-MB-453 were examined.The correct construction of pcDNA-TIMP3 was identified by means of restriction enzyme analysis,PCR amplication and nucleotide sequencing.Western blotting showed that the transfected cells were able to express TIMP-3, indicating that our construction of the pcDNA-TIMP3 eukaryotic expression vector was constructed successfully.Our experiments further indicated that the potential of metastasis was significantly reduced for the transfected cell line MDA-MB-453.Cellular & Molecular Immunology.2004;1(4):308-310.
