Özet:

Structure-based virtual screening (SBVS) was performed to predict lead compounds for fibroblast growth factor receptor 1 (FGFR1) inhibition screening the kinase inhibitor database taken from ChEMBL. The prepared kinase inhibitor database consisted of 48017 ligands were screened in ATP binding site of FGFR1 by CCDC Gold software using virtual screening parameters to filter out. After then, 720 ligands were docked inside FGFR1 using default docking parameters of CCDC Gold software. The GOLD fitness score values of 70 and 80 was used a threshold value for screening and docking process, respectively. The ligands as reduced numbers to twenty-two in terms of docking results were utilized to calculate MMGBSA free binding energy from 10 ns molecular dynamics simulations (MDS). For refinement of results, six of twenty-two ligands which have better calculated MMGBSA free binding energy were exposed to 100 ns MDS. Then, 100 ns MDS trajectories of six compounds were used to calculate MMGBSA free binding energy, and MDS were expended to 250 ns for three ligands which have highest free binding energies. By free binding energies calculated from expanded MDS, were used to predict the most promising candidates (compounds G9 and G10) for FGFR1 inhibition. Structure stability, binding modes and energy decomposition analysis were performed to insight into dynamic behaviors of compounds G9 and G10 inside FGFR-1.

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