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- W2020003786 abstract "Abstract Using enhancers to improve the transfection efficiency of polyethylenimine (PEI) can circumvent the needs of chemical modifications as well as subsequent purification and characterization of the modified PEI. In this study, we found that incorporating trehalose into the transfection reagent could improve the transgene expression mediated by DNA‐PEI complexes. Such enhancements were not observed when trehalose was replaced by other disaccharides. In an effort to explore the mechanisms, we examined how the timing of trehalose treatments and the durations of trehalose affected the percentages of cells expressing green fluorescent protein and the levels of intracellular ethidium monoazide labeled plasmid. Treatments with trehalose for 5–120 min prior to transfection could cause drops in transfection efficiency by 30–50%; such treatments, however, hardly affected the amounts of intracellular plasmid, indicating that the preexistence of intracellular trehalose could reduce transfection efficiency without lowering the endocytic activity. The transfection efficiency remained almost unchanged when the transfected cells were treated with trehalose after the removal of transfection reagents, indicating that trehalose had minimal effects on the machinery of protein synthesis. Despite the enhanced transgene expression, the presence of trehalose during transfection showed inhibitory effects on the internalization of DNA‐PEI complexes. Additionlly, the extent of enhancement in transgene expression strongly depended on the duration of trehalose. As the above observations suggested, only during the transfection process when complexes and trehalose coexisted, trehalose became an effective enhancer of transgene expression mediated by DNA‐PEI complexes possibly by affecting the mechanisms of intracellular trafficking." @default.
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- W2020003786 date "2007-01-01" @default.
- W2020003786 modified "2023-09-29" @default.
- W2020003786 title "Trehalose Enhances Transgene Expression Mediated by DNA-PEI Complexes" @default.
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- W2020003786 doi "https://doi.org/10.1021/bp070224m" @default.
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