Myrosinase-treated glucoerucin is a potent inducer of the Nrf2 target gene heme oxygenase 1--studies in cultured HT-29 cells and mice

J Nutr Biochem. 2015 Jun;26(6):661-6. doi: 10.1016/j.jnutbio.2015.01.004. Epub 2015 Mar 5.

Abstract

In this study, the effect of myrosinase-treated glucoerucin (GER+MYR), which releases the isothiocyanate (ITC) erucin, on heme oxygenase 1 (HO-1) gene expression and Nrf2 signaling was investigated in vitro in cultured cells and in vivo in mice. Treatment of HT-29 cells with GER+MYR resulted in a significant increase in the mRNA and protein levels of nuclear Nrf2 and HO-1. GER+MYR was more potent at enhancing the nuclear Nrf2 levels than were the following myrosinase-treated glucosinolates: sinigrin, glucoraphanin and gluconasturtiin, which are the precursors of allyl-ITC, R-sulforaphane and 2-phenylethyl ITC, respectively. GER+MYR also significantly induced HO-1 gene expression in the mouse intestinal mucosae and liver but not in the brain. Mechanistic studies suggest that GER+MYR induces Nrf2 via ERK1/2-, p38- and JNK-dependent signal transduction pathways. The GER+MYR-mediated increase in HO-1 expression is primarily attributable to p38 signaling.

Keywords: Glucoerucin; Glucosinolates; Heme oxygenase 1; MAPK; Myrosinase; Nrf2.

MeSH terms

  • Animals
  • Brain / drug effects
  • Brain / metabolism
  • Diet, High-Fat / adverse effects
  • Female
  • Glucose / analogs & derivatives*
  • Glucose / pharmacology
  • Glucosinolates / pharmacology
  • Glycoside Hydrolases / pharmacology
  • HT29 Cells
  • Heme Oxygenase-1 / genetics
  • Heme Oxygenase-1 / metabolism*
  • Humans
  • Imidoesters / pharmacology*
  • Intestinal Mucosa / metabolism
  • Intestines / drug effects
  • Isothiocyanates / metabolism
  • Liver / drug effects
  • Liver / metabolism
  • Membrane Proteins / genetics
  • Membrane Proteins / metabolism
  • Mice
  • Mice, Inbred C57BL
  • Mitogen-Activated Protein Kinase 3 / genetics
  • Mitogen-Activated Protein Kinase 3 / metabolism
  • Mustard Plant / chemistry
  • NF-E2-Related Factor 2 / genetics
  • NF-E2-Related Factor 2 / metabolism*
  • Oximes
  • Plant Extracts / pharmacology
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • Signal Transduction
  • Sulfoxides
  • Up-Regulation
  • p38 Mitogen-Activated Protein Kinases / genetics
  • p38 Mitogen-Activated Protein Kinases / metabolism

Substances

  • Glucosinolates
  • Imidoesters
  • Isothiocyanates
  • Membrane Proteins
  • NF-E2-Related Factor 2
  • NFE2L2 protein, human
  • Nfe2l2 protein, mouse
  • Oximes
  • Plant Extracts
  • RNA, Messenger
  • Sulfoxides
  • gluconasturtiin
  • glucoerucin
  • sinigrin
  • phenethyl isothiocyanate
  • allyl isothiocyanate
  • HMOX1 protein, human
  • Heme Oxygenase-1
  • Hmox1 protein, mouse
  • Mitogen-Activated Protein Kinase 3
  • p38 Mitogen-Activated Protein Kinases
  • Glycoside Hydrolases
  • thioglucosidase
  • sulforaphane
  • Glucose
  • glucoraphanin