Abstract
Aim: Expression of EGFP was investigated to ascertain the strength and specificity of CMV, U6 and hepatitis B virus (HBV) core promoters in hepatic and non-hepatic cells. Materials & methods: pSilencer-2.1 plasmid vector is known for siRNA-based inhibition. To achieve target-specific correction of disease-causing genes, pSilencer–GFP was constructed. For liver specific expression of therapeutic genes, endogenous U6 promoter of pSilencer-2.1 was replaced with HBV core promoter and ubiquitously active CMV promoter. Results: Transfection results showed that GFP expression under the control of HBV core promoter was higher in hepatic Hep3B than non-hepatic HEK293T cells. Conclusion: HBV core promoter could lead to specific expression in hepatocytes, which might be used in gene therapy of liver diseases as well as for siRNA-based therapeutic strategies.
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