Application of quantitative structure-activity relationship to the determination of binding constant based on fluorescence quenching

作者：Wen, Yingying; Liu, Huitao^*; Luan, Feng; Gao, Yuan

来源：Journal of Luminescence, 2011, 131(1): 126-133.

DOI：10.1016/j.jlumin.2010.09.036

• Quantitative structure-activity relationship
• Multiple linear regression
• Radial basis function neural network
• Binding constant
• Fluorescence quenching

Quantitative structure-activity relationship (QSAR) model was used to predict and explain binding constant (log K) determined by fluorescence quenching This method allowed us to predict binding constants of a variety of compounds with human serum albumin (HSA) based on their structures alone Stepwise multiple linear regression (MLR) and nonlinear radial basis function neural network (RBFNN) were performed to build the models The statistical parameters provided by the MLR model (R-2=0 8521 RMS=0 2678) indicated satisfactory stability and predictive ability while the RBFNN predictive ability is somewhat superior (R-2=0 9245 RMS=0 1736) The proposed models were used to predict the binding constants of two bioactive components in traditional Chinese medicines (isoimperatorm and chrysophanol) whose experimental results were obtained in our laboratory and the predicted results were in good agreement with the experimental results This QSAR approach can contribute to a better understan

• 出版日期2011-1
• 单位烟台大学