Linear and non-linear quantitative structure-activity relationship models on indole substitution patterns as inhibitors of HIV-1 attachment.
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.
Department of Electrical Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran. m.nirouei@liau.ac.ir
Mahyar
M
Nirouei
Ghasem
G
Ghasemi
Parviz
P
Abdolmaleki
Abdolreza
A
Tavakoli
Shahab
S
Shariati
D000465:Algorithms; D019380:Anti-HIV Agents / Q000737:chemistry* / Q000494:pharmacology*; D003198:Computer Simulation; D015497:HIV-1 / Q000502:physiology*; D006801:Humans; D007211:Indoles / Q000737:chemistry / Q000494:pharmacology*; D016014:Linear Models; D008956:Models, Chemical; D016571:Neural Networks, Computer; D021281:Quantitative Structure-Activity Relationship; D013453:Sulfonylurea Compounds / Q000737:chemistry / Q000494:pharmacology*; D053585:Virus Attachment / Q000187:drug effects*
D019380:Anti-HIV Agents; D007211:Indoles; D013453:Sulfonylurea Compounds; C032160:glyoxamide; C030374:indole