Abstract
We simultaneously tested the transfection efficiency of NT2/D1 and HeLa cells with Lipofectamine (Life Technologies) and Effectene (Qiagen) transfection reagents using the pCH110 eukaryotic assay vector, which contains the lacZ reporter gene. Under our culture conditions for NT2/D1 and HeLa cells, Effectene transfection efficiency could be augmented by simply increasing the amount of plasmid DNA 1.5-3 times above the recommended concentration without any visible cytotoxicity. With the Lipofectamine reagent, optimal transfection efficiency was obtained for both cell lines within the recommended concentrations, but at the top of the range. The results indicate that optimization of the transfection process should include plasmid DNA concentrations above the levels suggested by the manufacturers, in order to accomplish the highest transfection efficiency.
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