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SELECTBIO Conferences MedChem India 2017


EGFR Structure-based Bioactive Pharmacophore Model for Identifying Next-Generation Kinase Inhibitors against Clinically Relevant Mutations

C Gopi Mohan, Associate Professor, Amrita Vishwa Vidyapeetham University

Present talk elucidates identification of next generation kinase inhibitors for clinically relevant mutations of epidermal growth factor receptor (EGFR) using structure-based bioactive pharmacophore modeling followed by virtual screening (VS) techniques. Three dimensional (3D) pharmacophore models of EGFR and its different mutants were generated. This includes seven 3D pharmacophoric points with three different chemical features (descriptors) i.e. one hydrogen bond donor, three hydrogen bond acceptors and three aromatic rings. Pharmacophore models were validated using decoy dataset, ROC plot and external dataset compounds. The robust, bioactive 3D pharmacophore models were then used for VS of four different small compound databases: FDA approved, investigational, anti-cancer and bioactive compounds collections of Selleck Chemicals. CUDC101 a multi-targeted kinase inhibitor showed highest binding free energy and 3D pharmacophore fit value than the well known EGFR inhibitors, Gefitinib and Erlotinib. Further, we obtained ML167 as the second best hit on VS from bioactive database showing high binding energy and pharmacophore fit value EGFR receptor and its mutants. Optimistically, presented drug discovery based on the computational study serves as a foundation in identifying and designing of more potent EGFR next-generation kinase inhibitors and warrants further experimental studies to fight against lung cancer.

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