Discovery of novel inhibitors of CDK2 using docking and physics-based binding free energy calculation

Cyclin-dependent kinase (CDK) is a serine/threonine protein kinase family that cooperates with cyclin and plays an important role in the regulation of cell cycle. Cyclin-dependent kinase 2 is an important member of the CDK family and holds great promise as an anti-cancer drug target. In this study, we used molecular docking and physics-based binding free energy calculation method AS-IE that explicitly calculated protein-ligand binding entropy to discover novel inhibitors of CDK2. A total of 17 inhibitors were discovered with the best IC50 reaching similar to 2 mu M. Decomposition of the binding free energy using AS-IE reveals key protein-ligand interactions that determines the activity. These results provided a good example of drug design using physics-based free energy calculation method such as AS-IE and the novel compounds offered a good start point for further development of CDK2 inhibitors.

Automated summary

This study discovered novel inhibitors of CDK2 using molecular docking and physics-based binding free energy calculation method AS-IE. The decomposition of binding free energy revealed key protein-ligand interactions and provided a good example for drug design.