1. 3D-QSAR-Based Pharmacophore Modeling, Virtual Screening, and Molecular Docking Studies for Identification of Tubulin Inhibitors with Potential Anticancer Activity
- Author
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Amirhossein Sahebkar, Razieh Ghodsi, Salimeh Mirzaei, and Farzin Hadizadeh
- Subjects
Virtual screening ,Quantitative structure–activity relationship ,Article Subject ,General Immunology and Microbiology ,biology ,Hydrogen bond ,Chemistry ,Stereochemistry ,Active site ,General Medicine ,General Biochemistry, Genetics and Molecular Biology ,Hydrophobic effect ,Docking (molecular) ,biology.protein ,Medicine ,Structure–activity relationship ,Pharmacophore ,Research Article - Abstract
In this study, we aimed to develop a pharmacophore-based three-dimensional quantitative structure activity relationship (3D-QSAR) for a set including sixty-two cytotoxic quinolines (1-62) as anticancer agents with tubulin inhibitory activity. A total of 279 pharmacophore hypotheses were generated based on the survival score to build QSAR models. A six-point pharmacophore model (AAARRR.1061) was identified as the best model which consisted of three hydrogen bond acceptors (A) and three aromatic ring (R) features. The model showed a high correlation coefficient ( R 2 = 0.865 ), cross-validation coefficient ( Q 2 = 0.718 ), and F value (72.3). The best pharmacophore model was then validated by the Y-Randomization test and ROC-AUC analysis. The generated 3D contour maps were used to reveal the structure activity relationship of the compounds. The IBScreen database was screened against AAARRR.1061, and after calculating ADMET properties, 10 compounds were selected for further docking study. Molecular docking analysis showed that compound STOCK2S-23597 with the highest docking score (-10.948 kcal/mol) had hydrophobic interactions and can form four hydrogen bonds with active site residues.
- Published
- 2021
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