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The hypolipidemic natural product guggulsterone is a promiscuous steroid receptor ligand

Academic Article
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Overview

authors

  • Burris, Thomas
  • Montrose, C.
  • Houck, K. A.
  • Osborne, H. E.
  • Bocchinfuso, W. P.
  • Yaden, B. C.
  • Cheng, C. C.
  • Zink, R. W.
  • Barr, R. J.
  • Hepler, C. D.
  • Krishnan, V.
  • Bullock, H. A.
  • Burris, L. L.
  • Galvin, R. J.
  • Bramlett, K.
  • Stayrook, K. R.

publication date

  • March 2005

journal

  • Molecular Pharmacology  Journal

abstract

  • Guggulsterone (GS) is the active substance in guggulipid, an extract of the guggul tree, Commiphora mukul, used to treat a variety of disorders in humans, including dyslipidemia, obesity, and inflammation. The activity of GS has been suggested to be mediated by antagonism of the receptor for bile acids, the farnesoid X receptor (FXR). Here, we demonstrate that both stereoisomers of the plant sterol, (E)- and (Z)-GS, bind to the steroid receptors at a much higher affinity than to FXR. Both stereoisomers bind to the mineralocorticoid receptor (MR) with a Ki value of approximately 35 nM, which is greater than 100 times more potent than their affinity for FXR. Both (E)- and (Z)-GS also displayed high affinity for other steroid receptors, including the androgen (AR), glucocorticoid (GR), and progesterone receptors (PR) with Ki values ranging from 224 to 315 nM. In cell-based functional cotransfection assays, GSs behaved as antagonists of AR, GR, and MR, but as agonists of PR. Agonist activity was also demonstrated with estrogen receptor (ER) alpha; however, the potency was very low (EC50 > 5000 nM). In addition, GS displayed activity in functional assays in cell lines expressing endogenous AR, GR, ER, and PR. These data suggest that the variety of pharmacological effects exhibited by GS may be mediated by targeting several steroid receptors.

subject areas

  • Cell Line
  • Humans
  • Hypolipidemic Agents
  • Kinetics
  • Ligands
  • Phytotherapy
  • Plant Extracts
  • Pregnenediones
  • Radioligand Assay
  • Receptors, Steroid
  • Transfection
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Identity

International Standard Serial Number (ISSN)

  • 0026-895X

Digital Object Identifier (DOI)

  • 10.1124/mol.104.007054

PubMed ID

  • 15602004
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Additional Document Info

start page

  • 948

end page

  • 954

volume

  • 67

issue

  • 3

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