Abstract
A novel series of acenaphtho[1,2-b]pyrrole derivatives as potent and selective inhibitors of fibroblast growth factor receptor 1 (FGFR1) were designed and synthesized. In silico target prediction revealed that tyrosine kinases might be the potential targets of the representative compound 2, which was subsequently validated by enzyme-linked immunosorbent assay (ELISA) for its selective and active FGFR1 inhibition of various tyrosine kinases. The structure-activity relationship (SAR) analysis aided by molecular docking simulation in the ATP-binding site demonstrated that acenaphtho[1,2-b]pyrrole carboxylic acid esters (2-5) are potent inhibitors of FGFR1 with IC(50) values ranging from 19 to 77 nM. Furthermore, these compounds exhibited favorable growth inhibition property against FGFR-expressing cancer cell lines with IC(50) values ranging from micromolar to submicromolar. Western blotting analysis showed that compounds 2, 3, and 2b inhibited activation of FGFR1 and extracellular-signal regulated kinase 1/2 (Erk1/2).
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acenaphthenes / chemical synthesis*
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Acenaphthenes / chemistry
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Acenaphthenes / pharmacology*
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Acenaphthenes / toxicity
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Animals
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Cell Line, Tumor
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Cell Proliferation / drug effects
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Drug Design
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Extracellular Signal-Regulated MAP Kinases / antagonists & inhibitors*
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Extracellular Signal-Regulated MAP Kinases / metabolism
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Goats
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HeLa Cells
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Humans
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Inhibitory Concentration 50
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Mice
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Molecular Targeted Therapy
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Protein Kinase Inhibitors / chemical synthesis*
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Protein Kinase Inhibitors / chemistry
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Protein Kinase Inhibitors / pharmacology*
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Protein Kinase Inhibitors / toxicity
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Pyrroles / chemical synthesis*
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Pyrroles / chemistry
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Pyrroles / pharmacology*
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Pyrroles / toxicity
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Receptor, Fibroblast Growth Factor, Type 1 / antagonists & inhibitors*
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Receptor, Fibroblast Growth Factor, Type 1 / metabolism
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Structure-Activity Relationship
Substances
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Acenaphthenes
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Protein Kinase Inhibitors
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Pyrroles
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ethyl 8-oxo-8H-acenaphtho(1,2-b)pyrrole-9-carboxylate
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Receptor, Fibroblast Growth Factor, Type 1
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Extracellular Signal-Regulated MAP Kinases