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Efficient expression of human factor IX cDNA in liver mediated by hydrodynamics-based plasmid administration

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Hydrodynamics-based administration via tail vein was used to deliver naked plasmid with human factor IX (hFIX) cDNA in 2.2 mL Ringer’s solution into mice within 7 s. The peak level of expression of hFIX was 2921 ng/mL in mouse plasma. The hFIX cDNA expression increased with increasing the amount of plasmid DNA injected. The peak level of gene expression declined after repeated injection of plasmid (1459 ng/mL). The hFIX cDNA was detected in various organs, but the highest level of gene expression appeared in liver. Transaminase levels and liver histological results showed that rapid intravenous plasmid injection into mice induced transient focal acute liver damage, which was rapidly repaired within 3–10 d. These results suggested that high-level expression of hFIX cDNA can be achieved by hydrodynamics-based plasmid transfer and this method is now further used for gene therapy and gene function study in our lab.

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Correspondence to Jinglun Xue.

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He, C., Feng, D., Wu, W. et al. Efficient expression of human factor IX cDNA in liver mediated by hydrodynamics-based plasmid administration. Chin.Sci.Bull. 48, 790–795 (2003). https://doi.org/10.1007/BF03187054

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  • hFIX
  • gene transfer
  • naked plasmid
  • hydrodynamics-based transfection