PMID: 11904071Mar 21, 2002Paper

Construction of recombinant adenoviral vector Ad-CMV-hTGFbeta1 for reversion of intervertebral disc degeneration by gene transfer

Chinese Journal of Traumatology = Zhonghua Chuang Shang Za Zhi
Jiangwei TanShuzhong Li

Abstract

To provide a highly efficient adenoviral vector Ad-CMV-hTGFbeta1 for the study of gene therapy for reversion of the intervertebral disc degeneration. A newly developed recombinant adenoviral vector construction system was used in the study. The cDNA of hTGFbeta1 was first subcloned into a shuttle plasmid pShuttle-CMV. The resultant plasmid was linearized by digesting with restriction endonuclease PmeI, and subsequently transformed into E.coli. BJ5183 cells with an adenoviral backbone plasmid pAdEasy-1. Recombinants were selected by kanamycin resistance and confirmed by restriction endonuclease analysis. Finally, the recombinant plasmid linearized by PmeI was transfected into 293 cells. Recombinant adenoviruses were generated within 2 weeks. The recombinant adenoviral plasmids were cut by BamHI and PacI respectively, and the diagnostic fragments appeared in 0.8% agarose electrophoresis. The infected 293 cells showed evident cytopathic effect (CPE). The productions of PCR confirmed the presence of recombinant adenovirus. The expression of hTGFbeta1 was verified by immunohistochemical staining. The successful generation of the adenoviral vector Ad-CMV-hTGFbeta1 and the confirmation of the interest gene expression make it possible ...Continue Reading

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