Optimization of 5-arylidene barbiturates as potent, selective, reversible LSD1 inhibitors for the treatment of acute promyelocytic leukemia

Bioorg Med Chem. 2018 Sep 15;26(17):4871-4880. doi: 10.1016/j.bmc.2018.08.026. Epub 2018 Aug 22.

Abstract

Histone lysine specific demethylase 1 (LSD1) is overexpressed in diverse hematologic disorders and recognized as a promising target for blood medicines. In this study, molecular docking-based virtual screening united with bioevaluation was utilized to identify novel skeleton of 5-arylidene barbiturate as small-molecule inhibitors of LSD1. Among the synthesized derivatives, 12a exhibited reversible and potent inhibition (IC50 = 0.41 μM) and high selectivity over the MAO-A and MAO-B. Notably, 12a strongly induced differentiation effect on acute promyelocytic leukemia NB4 cell line and distinctly escalated the methylation level on histone 3 lysine 4 (H3K4). Our findings indicate that 5-arylidene barbiturate may represent a new skeleton of LSD1 inhibitors and 12a deserve as a promising agent for the further research.

Keywords: 5-Arylidene barbiturate; LSD1; Leukemia; Reversible; Selective.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / pharmacology
  • Antineoplastic Agents / therapeutic use*
  • Barbiturates / chemistry
  • Barbiturates / pharmacology*
  • Cell Line, Tumor
  • DNA Methylation
  • Enzyme Inhibitors / pharmacology
  • Enzyme Inhibitors / therapeutic use*
  • Histone Demethylases / antagonists & inhibitors*
  • Humans
  • Inhibitory Concentration 50
  • Leukemia, Myeloid, Acute / drug therapy*
  • Leukemia, Myeloid, Acute / pathology
  • Molecular Docking Simulation
  • Spectrum Analysis / methods

Substances

  • Antineoplastic Agents
  • Barbiturates
  • Enzyme Inhibitors
  • Histone Demethylases
  • KDM1A protein, human