Abstract
AbstractA surface plasmon resonance (SPR) biosensor based on wavelength modulation technology was developed and validated for the kinetic analysis of the interactions between two nonsteroidal anti‐inflammatory drugs (NSAIDs) and cyclooxygenase‐2 (COX‐2). After the effect of different concentration COX‐2 on the binding capacity of the SPR biosensor surface was studied, the COX‐2 was immobilized covalently onto the biosensor surface using a standard amine coupling method. The affinity constants for indomethacin, ketoprofen binding to COX‐2 are 7.5×103 L/mol and 9.25×103 L/mol, respectively. The biosensor surface can be regenerated after being rinsed with 0.01 mol/L NaOH, and the biosensor can be used repeatedly. These indicated that the wavelength modulation SPR biosensor has the potential application in the fields of pharmacokinetics, pharmacodynamics and drug discovery.
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