Abstract:Polyethylenimine (PEI) is one of the most effective polymers for non-viral gene delivery; however, the mechanism by which DNA binds to PEI remains unclear. In this study, the reaction rate between DNA and PEI was determined using quartz crystal microbalance (QCM) and surface plasmon resonance (SPR). The association rate constant was determined as 0.8-1 s −1 mM −1 , and the dissociation rate constant was found to be 1-2 ×10 −3 s −1 . The data obtained from these measurements could be explained using the two-sit… Show more
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