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Nishi, T. et al.

Nishi, Yoshizato, Yamashiro, Takeshima, Sato, Hamada, Kitamura, Yoshimura, Saya, Kuratsu, Ushio,

High-efficiency in vivo gene transfer using intraarterial plasmid DNA injection following in vivo electroporation.

A novel method for high-efficiency and region- controlled in vivo gene transfer was developed by combining in vivo electroporation and intraarterial plasmid DNA injection. A mammalian expression plasmid for the Escherichia coli lacZ gene (driven with a SV40 early promoter) was injected into the internal carotid artery of rats whose brain tumors (from prior inoculation) had been electroporated between two electrodes. The lacZ gene was efficiently transferred and expressed in the tumor cell 3 days after plasmid injection. However, neither any gene transfers nor any elevated lacZ activity was detected in tissues outside the electrodes. The plasmid was not transferred without electroporation. Human monocyte chemoattractant protein-1 cDNA was also transferred by this method, and its long-lasting (3 weeks) expression was confirmed by using the Epstein-Barr virus episomal replicon system. The expressed monocyte chemoattractant protein-1 protein was functional, as evident by the presence of a large number of monocytes in tumor tissue. This method, Â¿electrogene therapy,Â¿ which does not require viral genes or particles, allows genes to be transferred and expressed in desired organs or tissues, and it may lead to the development of a new type of highly effective gene therapy.[1]

References

High-efficiency in vivo gene transfer using intraarterial plasmid DNA injection following in vivo electroporation. Nishi, T., Yoshizato, K., Yamashiro, S., Takeshima, H., Sato, K., Hamada, K., Kitamura, I., Yoshimura, T., Saya, H., Kuratsu, J., Ushio, Y. Cancer Res. (1996) [Pubmed]

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