Thiazolidine derivatives as potent and selective inhibitors of the PIM kinase family

Bioorg Med Chem. 2017 May 1;25(9):2657-2665. doi: 10.1016/j.bmc.2017.02.056. Epub 2017 Feb 28.

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.

MeSH terms

  • Animals
  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / pharmacokinetics
  • Antineoplastic Agents / pharmacology
  • Humans
  • Isoenzymes / antagonists & inhibitors
  • K562 Cells
  • Mice
  • Microsomes, Liver / drug effects
  • Microsomes, Liver / enzymology
  • Molecular Docking Simulation
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / pharmacokinetics
  • Protein Kinase Inhibitors / pharmacology*
  • Protein Serine-Threonine Kinases / antagonists & inhibitors*
  • Proto-Oncogene Proteins / antagonists & inhibitors*
  • Proto-Oncogene Proteins c-pim-1 / antagonists & inhibitors*
  • Rhodanine / analogs & derivatives*
  • Rhodanine / chemical synthesis
  • Rhodanine / pharmacokinetics
  • Rhodanine / pharmacology
  • Solubility
  • Sulfonamides / chemical synthesis
  • Sulfonamides / pharmacokinetics
  • Sulfonamides / pharmacology*
  • Thiazolidines / chemical synthesis
  • Thiazolidines / pharmacokinetics
  • Thiazolidines / pharmacology*

Substances

  • 5-((2-(3-N,N-dimethylsulfamoylamino)thiazol-4-yl)methylene)-2-thioxothiazolidin-4-one
  • Antineoplastic Agents
  • Isoenzymes
  • PIM2 protein, human
  • Protein Kinase Inhibitors
  • Proto-Oncogene Proteins
  • Sulfonamides
  • Thiazolidines
  • Rhodanine
  • PIM1 protein, human
  • PIM3 protein, human
  • Protein Serine-Threonine Kinases
  • Proto-Oncogene Proteins c-pim-1