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Effective gene transfer to solid tumours using different nonviral gene delivery techniques: electroporation, liposomes, and integrin-targeted vectorČemažar, Maja ...In this study, we measured transfection efficiency in vitro and in vivo using the following nonviral approaches of gene delivery: injection of plasmid DNA, electroporation-assisted, ... liposome-enhanced, and integrin-targeted gene delivery, as well as the combination of these methods. Four histologically different tumor models were transfected with a plasmid encoding the green fluorescent protein (GFP) ( B16 mouse melanoma, P22 rat carcinosarcoma, SaF mouse sarcoma, and T24 human bladder carcinoma) using adherent cells, dense cell suspensions, and solid tumors. Emphasis was placed on different electroporation conditions to optimise the duration and amplitude of the electric pulses, as well as on different DNA concentrations for effective genedelivery. In addition, transfection efficiency was correlated with cell density of the tumors. The major in vivofindings were: (a) electroporationassisted gene delivery with plasmid DNA, employing long electric pulses with low amplitude, yielded significantly better GFP expression than short electric pulses with high amplitude; (b) electroporationcombined with liposome-DNA complexes yielded the highest percentage of transfected tumor area in B16F1 tumor (6%); (c) transfection efficiency of electroporation-assisted plasmid DNA delivery was dependent on tumor type; (d) integrin-targeted vector, alone or combined with electroporation, was largely ineffective. In conclusion, our results demonstrate that some nonviral methods of gene delivery are feasible and efficient in transfecting solid tumors. Therefore, this makes nonviral methodsattractive for further development.Vir: Cancer gene therapy. - ISSN 0929-1903 (Letn. 9, 2002, str. 399-406)Vrsta gradiva - članek, sestavni delLeto - 2002Jezik - angleškiCOBISS.SI-ID - 14894553
Avtor
Čemažar, Maja |
Serša, Gregor |
Wilson, John |
Tozer, Gillian M. |
Hart, Stephen L. |
Grošel, Alenka |
Dachs, Gabi U.
Teme
Gene transfer |
Electroporation |
Liposomes |
Transfection |
Tumor cells, cultured |
Plasmids |
Integrins |
Elektroporacija |
Liposomi |
Transfekcija |
Tumorske celične kulture |
Integrini |
Plazmidi
Vnos na polico
Trajna povezava
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Čemažar, Maja | 14575 |
Serša, Gregor | 08800 |
Grošel, Alenka | 21329 |
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