Generation of highly potent DYRK1A-dependent inducers of human β-Cell replication via Multi-Dimensional compound optimization

Bioorg Med Chem. 2020 Jan 1;28(1):115193. doi: 10.1016/j.bmc.2019.115193. Epub 2019 Nov 11.

Abstract

Small molecule stimulation of β-cell regeneration has emerged as a promising therapeutic strategy for diabetes. Although chemical inhibition of dual specificity tyrosine-phosphorylation-regulated kinase 1A (DYRK1A) is sufficient to enhance β-cell replication, current lead compounds have inadequate cellular potency for in vivo application. Herein, we report the clinical stage anti-cancer kinase inhibitor OTS167 as a structurally novel, remarkably potent DYRK1A inhibitor and inducer of human β-cell replication. Unfortunately, OTS167's target promiscuity and cytotoxicity curtails utility. To tailor kinase selectivity towards DYRK1A and reduce cytotoxicity we designed a library of fifty-one OTS167 derivatives based upon a modeled structure of the DYRK1A-OTS167 complex. Indeed, derivative characterization yielded several leads with exceptional DYRK1A inhibition and human β-cell replication promoting potencies but substantially reduced cytotoxicity. These compounds are the most potent human β-cell replication-promoting compounds yet described and exemplify the potential to purposefully leverage off-target activities of advanced stage compounds for a desired application.

Keywords: Diabetes; Dual-specificity tyrosine-regulated kinase 1A (DYRK1A); Medicinal chemistry; β-cell regeneration; β-cell replication.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Binding Sites
  • Cell Proliferation / drug effects
  • Dyrk Kinases
  • Humans
  • Insulin / metabolism
  • Insulin-Secreting Cells / cytology
  • Insulin-Secreting Cells / drug effects
  • Insulin-Secreting Cells / metabolism
  • Kinetics
  • Molecular Docking Simulation
  • Naphthyridines / chemical synthesis
  • Naphthyridines / chemistry
  • Naphthyridines / pharmacology
  • Protein Kinase Inhibitors / chemistry*
  • Protein Kinase Inhibitors / metabolism
  • Protein Kinase Inhibitors / pharmacology
  • Protein Serine-Threonine Kinases / antagonists & inhibitors
  • Protein Serine-Threonine Kinases / metabolism*
  • Protein Structure, Tertiary
  • Protein-Tyrosine Kinases / antagonists & inhibitors
  • Protein-Tyrosine Kinases / metabolism*
  • Small Molecule Libraries / chemistry*
  • Small Molecule Libraries / metabolism
  • Small Molecule Libraries / pharmacology
  • Structure-Activity Relationship

Substances

  • Insulin
  • Naphthyridines
  • Protein Kinase Inhibitors
  • Small Molecule Libraries
  • Protein-Tyrosine Kinases
  • Protein Serine-Threonine Kinases