Abstract
A novel series of pyridin-3-amine derivatives were designed, synthesized, and evaluated as multitargeted protein kinase inhibitors for the treatment of non-small cell lung cancer (NSCLC). Hit 1 was first disclosed by in silico screening against fibroblast growth factor receptors (FGFR), which was subsequently validated by in vitro experiments. The structure-activity relationship (SAR) of its analogues was then explored to afford novel FGFR inhibitors 2a-2p and 3a-3q. Among them, 3m showed potent inhibition against FGFR1, 2, and 3. Interestingly, compound 3m not only inhibited various phosphorylation and downstream signaling across different oncogenic forms in FGFR-overactivated cancer cells but also showed nanomolar level inhibition against several other NSCLC-related oncogene kinases, including RET, EGFR, EGFR/T790M/L858R, DDR2, and ALK. Finally, in vivo pharmacology evaluations of 3m showed significant antitumor activity (TGI = 66.1%) in NCI-H1581 NSCLC xenografts with a good pharmacokinetic profile.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aminopyridines / chemical synthesis*
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Aminopyridines / pharmacokinetics
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Aminopyridines / pharmacology
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Animals
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Antineoplastic Agents / chemical synthesis*
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Antineoplastic Agents / pharmacokinetics
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Antineoplastic Agents / pharmacology
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Carcinoma, Non-Small-Cell Lung / drug therapy*
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Cell Line, Tumor
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Cell Proliferation / drug effects
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Databases, Chemical
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Drug Design
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Drug Screening Assays, Antitumor
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Female
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Heterografts
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Humans
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Indazoles / chemical synthesis*
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Indazoles / pharmacokinetics
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Indazoles / pharmacology
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Lung Neoplasms / drug therapy*
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Mice
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Mice, Nude
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Molecular Docking Simulation
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Neoplasm Transplantation
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Phosphorylation
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Protein Kinase Inhibitors / chemical synthesis*
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Protein Kinase Inhibitors / pharmacokinetics
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Protein Kinase Inhibitors / pharmacology
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Protein-Tyrosine Kinases / antagonists & inhibitors*
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Protein-Tyrosine Kinases / metabolism
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Pyridines / chemical synthesis*
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Pyridines / pharmacokinetics
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Pyridines / pharmacology
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Rats, Sprague-Dawley
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Signal Transduction
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Stereoisomerism
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Structure-Activity Relationship
Substances
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4-fluoro-2-(5-(2-hydroxy-1-phenylethylamino)-3-(3-methyl-1H-indazol-5-yl)pyridin-2-yl)phenol
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Aminopyridines
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Antineoplastic Agents
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Indazoles
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Protein Kinase Inhibitors
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Pyridines
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Protein-Tyrosine Kinases