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  • Title: Construction of the recombinant adenovirus vector carrying antisense multidrug resistance gene.
    Author: Li B, Gou XH, Chen L, Li DH, Zhao YH, Han L, Zhao LY, Gong JP.
    Journal: Hepatobiliary Pancreat Dis Int; 2006 Feb; 5(1):80-4. PubMed ID: 16481289.
    Abstract:
    BACKGROUND: Multidrug resistance proteins serve as transporters for chemical drugs in human malignancies. The objective of this study was to construct a homologous recombinant adenovirus carrying a reversal fragment of multidrug resistance gene 1 (mdr1) gene cDNA sequence. METHODS: The fragment of the mdr1 gene from the plasmid pHaMDR1-1 carrying the whole human mdr1 cDNA sequence was inserted reversely into the shuttle plasmid pAdTrack-CMV of adenoviral vector system AdEasy. The homologous recombination process was taken place in E. coli BJ5183 with the backbone plasmid pAdEasy-1. After packaging in 293 cells, recombinant adenoviral plasmid was generated. The recombinant adenoviral plasmid was identified by polymerase chain reaction (PCR), restriction endonucleases digest, DNA sequence analysis and fluorescence microscopic photograph, respectively. RESULTS: The recombinant adenovirus pAdEasy-GFP-ASmdr1 was successfully constructed and identified by PCR, restriction digest, and sequencing with strong green fluorescence expression in fluorescence microscopic photograph. CONCLUSIONS: The recombinant adenoviral mdr1 vector would introduce the antisense mdr1 gene into the human multidrug resistance hepatocellular cell line effectively, which would provide an experimental basis to study the multidrug resistance in human hepatocellular carcinoma.
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