Potential of decursin to inhibit the human cytochrome P450 2J2 isoform

Food Chem Toxicol. 2014 Aug:70:94-9. doi: 10.1016/j.fct.2014.04.020. Epub 2014 Apr 29.

Abstract

CYP2J2 enzyme is highly expressed in human tumors and carcinoma cell lines, and epoxyeicosatrienoic acids, CYP2J2-mediated metabolites, have been implicated in the pathologic development of human cancers. To identify a CYP2J2 inhibitor, 50 natural products obtained from plants were screened using astemizole as a CYP2J2 probe substrate in human liver microsomes. Of these, decursin noncompetitively inhibited CYP2J2-mediated astemizole O-demethylation and terfenadine hydroxylation activities with Ki values of 8.34 and 15.8μM, respectively. It also showed cytotoxic effects against human hepatoma HepG2 cells in a dose-dependent manner while it did not show cytotoxicity against mouse hepatocytes. The present data suggest that decursin is a potential candidate for further evaluation for its CYP2J2 targeting anti-cancer activities. Studies are currently underway to test decursin as a potential therapeutic agent for cancer.

Keywords: CYP2J2; Cytotoxicity; Decursin; Drug interactions; Human liver microsomes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Benzopyrans / pharmacology*
  • Biological Products / pharmacology
  • Butyrates / pharmacology*
  • Cell Survival / drug effects
  • Chromatography, Liquid
  • Cytochrome P-450 CYP2J2
  • Cytochrome P-450 Enzyme Inhibitors / pharmacology*
  • Cytochrome P-450 Enzyme System / metabolism*
  • Hep G2 Cells
  • Hepatocytes / drug effects
  • Hepatocytes / metabolism
  • Humans
  • Hydroxylation
  • Isoenzymes / metabolism
  • Male
  • Mice
  • Mice, Inbred ICR
  • Microsomes, Liver / drug effects
  • Microsomes, Liver / enzymology
  • Tandem Mass Spectrometry

Substances

  • Benzopyrans
  • Biological Products
  • Butyrates
  • CYP2J2 protein, human
  • Cytochrome P-450 Enzyme Inhibitors
  • Isoenzymes
  • Cytochrome P-450 Enzyme System
  • decursin
  • Cytochrome P-450 CYP2J2