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Vol 13, No 5 (2010)
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Optimization of polyethylenimine-mediated transient transfection using response surface methodology design | Fang | Electronic Journal of Biotechnology
doi: 10.2225/vol13-issue5-fulltext-6
Electronic Journal of Biotechnology, Vol 13, No 5 (2010)

Optimization of polyethylenimine-mediated transient transfection using response surface methodology design

Qiangyi Fang, Bingqian Shen



Abstract

Response surface methodology was undertaken to optimize the polyethylenimine-mediated transient transfection of suspension cultured HEK 293-F cells. A total of 15 combinations were designed according to Box-Behnken design to identify the effects of DNA concentration, polyethylenimine concentration and incubation time on transient transfection efficiency. The highest integral optic density of green fluorescent protein presenting r-protein yield was accessed using a DNA concentration of 1.75 µg/mL, a polyethylenimine concentration of 10.5 µg/mL, and an incubation time of 11.8 min. Analysis of variance demonstrated that the experimental values fit well with a quadratic model. The RSM-optimized transient transfection resulted in greater production of human tissue prokallikrein (TproK) than non-RSM-optimized conditions: protein yield was 32.0 mg/L and the maximum viable cell density reached 3.57 x 106 cells/mL in a 5 L stirred-tank bioreactor culture.




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ISSN:  0717-3458

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