Construction of recombinant eukaryotic expression plasmid containing murine CD40 ligand gene and its expression in H22 cells
2005
AIM: To construct a recombinant murine CD40 ligand (mCD40L) eukaryotic expression vector for gene therapy and target therapy of hepatocellular carcinoma (HCC).METHODS: mCD40L cDNA was synthesized by RT-PCR with the specific primers and directly cloned into T vector to generate middle recombinant. After digestion with restriction endonuclease, the target fragment was subcloned into the multi-clone sites of the eukaryotic vector. The constructed vector was verified by enzyme digestion and sequencing,and the product expressed was detected by RT-PCR and immunofluorescence methods.RESULTS: The full-length mCD40L-cDNA was successfully cloned into the eukaryotic vector through electrophoresis,and mCD40L gene was integrated into the genome of infected H22 cells by RT-PCR. Murine CD40L antigen molecule was observed in the plasma of mCD40L-H22 by indirect immuno-fluorescence staining.CONCLUSION: The recombined mCD40L eukaryotic expression vector can be expressed in H22 cell line. It providesexperimental data for gene therapy and target therapy ofhepatocellular carcinoma.
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