Ursodeoxycholic acid amides as novel glucocorticoid receptor modulators

J Med Chem. 2011 Jan 13;54(1):122-30. doi: 10.1021/jm100860s. Epub 2010 Dec 15.

Abstract

Ursodeoxycholic acid (UDCA) is used for the treatment of hepatic inflammatory diseases. Recent studies have shown that UDCA's biological effects are partly glucocorticoid receptor (GR) mediated. UDCA derivatives were synthesized and screened for ability to induce GR translocation in a high content analysis assay using the esophageal cancer SKGT-4 cell line. UDCA derivatives induced GR translocation in a time dependent manner with equal efficacy to that of dexamethasone (Dex) and with greatly increased potency relative to UDCA. The cyclopropylamide 1a suppressed TNF-α induced NF-κB activity and it induced GRE transactivation. 1a was unable to displace Dex from the GR ligand binding domain (LBD) in a competition experiment but was capable of coactivator recruitment in a time-resolved fluorescence energy transfer assay (TR-FRET). This represents a novel mechanism of action for a GR modulator. These derivatives could result in a new class of GR modulators.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amides / chemical synthesis*
  • Amides / pharmacology
  • Binding Sites
  • Binding, Competitive
  • Cell Line, Tumor
  • Dexamethasone / metabolism
  • Dexamethasone / pharmacology
  • Esophageal Neoplasms
  • Fluorescence Resonance Energy Transfer
  • Glucocorticoids / metabolism
  • Glucocorticoids / pharmacology
  • HEK293 Cells
  • Humans
  • Ligands
  • Models, Molecular
  • NF-kappa B / metabolism
  • Protein Transport
  • Radioligand Assay
  • Receptors, Glucocorticoid / agonists
  • Receptors, Glucocorticoid / genetics
  • Receptors, Glucocorticoid / metabolism*
  • Response Elements
  • Structure-Activity Relationship
  • Transcriptional Activation
  • Tumor Necrosis Factor-alpha / pharmacology
  • Ursodeoxycholic Acid / analogs & derivatives*
  • Ursodeoxycholic Acid / chemical synthesis*
  • Ursodeoxycholic Acid / pharmacology

Substances

  • Amides
  • Glucocorticoids
  • Ligands
  • NF-kappa B
  • Receptors, Glucocorticoid
  • Tumor Necrosis Factor-alpha
  • Ursodeoxycholic Acid
  • Dexamethasone