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IJBB Vol.49 [2012] >
IJBB Vol.49(3) [June 2012] >


Title: Linear and non-linear quantitative structure-activity relationship models on indole substitution patterns as inhibitors of HIV-1 attachment
Authors: Nirouei, Mahyar
Ghasemi, Ghasem
Abdolmaleki, Parviz
Tavakoli, Abdolreza
Shariati, Shahab
Keywords: HIV
Indole glyoxamide derivatives
Quantitative structure-activity relationship
Genetic algorithm
Artificial neural network
Multiple linear regressions
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: The antiviral drugs that inhibit human immunodeficiency virus (HIV) entry to the target cells are already in different phases of clinical trials. They prevent viral entry and have a highly specific mechanism of action with a low toxicity profile. Few QSAR studies have been performed on this group of inhibitors. This study was performed to develop a quantitative structure–activity relationship (QSAR) model of the biological activity of indole glyoxamide derivatives as inhibitors of the interaction between HIV glycoprotein gp120 and host cell CD4 receptors. Forty different indole glyoxamide derivatives were selected as a sample set and geometrically optimized using Gaussian 98W. Different combinations of multiple linear regression (MLR), genetic algorithms (GA) and artificial neural networks (ANN) were then utilized to construct the QSAR models. These models were also utilized to select the most efficient subsets of descriptors in a cross-validation procedure for non-linear log (1/EC50) prediction. The results that were obtained using GA-ANN were compared with MLR-MLR and MLR-ANN models. A high predictive ability was observed for the MLR, MLR-ANN and GA-ANN models, with root mean sum square errors (RMSE) of 0.99, 0.91 and 0.67, respectively (N = 40). In summary, machine learning methods were highly effective in designing QSAR models when compared to statistical method.
Page(s): 202-210
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Source:IJBB Vol.49(3) [June 2012]

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