Abstract
The PIM family of serine/threonine kinases have become an attractive target for anti-cancer drug development, particularly for certain hematological malignancies. Here, we describe the discovery of a series of inhibitors of the PIM kinase family using a high throughput screening strategy. Through a combination of molecular modeling and optimization studies, the intrinsic potencies and molecular properties of this series of compounds was significantly improved. An excellent pan-PIM isoform inhibition profile was observed across the series, while optimized examples show good selectivity over other kinases. Two PIM-expressing leukemic cancer cell lines, MV4-11 and K562, were employed to evaluate the in vitro anti-proliferative effects of selected inhibitors. Encouraging activities were observed for many examples, with the best example (44) giving an IC50 of 0.75μM against the K562 cell line. These data provide a promising starting point for further development of this series as a new cancer therapy through PIM kinase inhibition.
Keywords:
Anti-cancer; High throughput screen; Kinase inhibitor; PIM kinase; Thiazolidine.
Copyright © 2017 Elsevier Ltd. All rights reserved.
MeSH terms
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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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Humans
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Isoenzymes / antagonists & inhibitors
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K562 Cells
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Mice
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Microsomes, Liver / drug effects
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Microsomes, Liver / enzymology
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Molecular Docking Simulation
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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 Serine-Threonine Kinases / antagonists & inhibitors*
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Proto-Oncogene Proteins / antagonists & inhibitors*
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Proto-Oncogene Proteins c-pim-1 / antagonists & inhibitors*
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Rhodanine / analogs & derivatives*
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Rhodanine / chemical synthesis
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Rhodanine / pharmacokinetics
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Rhodanine / pharmacology
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Solubility
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Sulfonamides / chemical synthesis
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Sulfonamides / pharmacokinetics
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Sulfonamides / pharmacology*
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Thiazolidines / chemical synthesis
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Thiazolidines / pharmacokinetics
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Thiazolidines / pharmacology*
Substances
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5-((2-(3-N,N-dimethylsulfamoylamino)thiazol-4-yl)methylene)-2-thioxothiazolidin-4-one
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Antineoplastic Agents
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Isoenzymes
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PIM2 protein, human
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Protein Kinase Inhibitors
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Proto-Oncogene Proteins
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Sulfonamides
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Thiazolidines
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Rhodanine
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PIM1 protein, human
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PIM3 protein, human
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Protein Serine-Threonine Kinases
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Proto-Oncogene Proteins c-pim-1