Frontal affinity chromatography with MS detection of EphB2 tyrosine kinase receptor. 2. Identification of small-molecule inhibitors via coupling with virtual screening

J Med Chem. 2005 May 5;48(9):3221-30. doi: 10.1021/jm0492204.

Abstract

We have integrated two complementary methods, high-throughput virtual screening with a "high-content" wet screening technique based on frontal affinity chromatography with mass spectrometry detection (FAC-MS), for identification of hits against the erythropoietin-producing hepatocellular B2 (EphB2) receptor tyrosine kinase domain. Both an EphB2-directed virtual screen combining docking and scoring and a kinase-directed pharmacophore search strategy were used to identify a compound set enriched in bioactive compounds against EphB2. The coupling of virtual screening methodologies with FAC-MS is a unique hybrid approach that can be used to increase the efficacy of both hit discovery and optimization efforts in drug discovery and has successfully identified hits, in particular 19a (36% shift, IC(50) = 5.2 microM, K(d) = 3.3 microM), as inhibitors for EphB2, a potential cancer target.

MeSH terms

  • Antineoplastic Agents / chemistry*
  • Antineoplastic Agents / pharmacology
  • Binding Sites
  • Cell Line, Tumor
  • Chromatography, Affinity
  • Databases, Factual
  • Enzyme-Linked Immunosorbent Assay
  • Heterocyclic Compounds / chemistry
  • Heterocyclic Compounds / pharmacology
  • Humans
  • Mass Spectrometry
  • Models, Molecular
  • Molecular Weight
  • Naphthoquinones / chemistry
  • Naphthoquinones / pharmacology
  • Phosphorylation
  • Protein Structure, Tertiary
  • Quantitative Structure-Activity Relationship
  • Receptor, EphB2 / antagonists & inhibitors*
  • Receptor, EphB2 / chemistry*
  • Receptor, EphB2 / metabolism
  • Sulfides / chemistry
  • Sulfides / pharmacology

Substances

  • Antineoplastic Agents
  • Heterocyclic Compounds
  • Naphthoquinones
  • Sulfides
  • Receptor, EphB2