Regulation of the selenoprotein SelS by glucose deprivation and endoplasmic reticulum stress - SelS is a novel glucose-regulated protein

FEBS Lett. 2004 Apr 9;563(1-3):185-90. doi: 10.1016/S0014-5793(04)00296-0.

Abstract

SelS is a newly identified selenoprotein and its gene expression is up-regulated in the liver of Psammomys obesus after fasting. We have examined whether SelS is regulated by glucose deprivation and endoplasmic reticulum (ER) stress in HepG2 cells. Glucose deprivation and the ER stress inducers tunicamycin and thapsigargin increased SelS gene expression and protein content several-fold in parallel with glucose-regulated protein 78. The overexpression of SelS increased Min6 cell resistance to oxidative stress-induced toxicity. These results indicate that SelS is a novel member of the glucose-regulated protein family and its function is related to the regulation of cellular redox balance.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Carcinoma, Hepatocellular / genetics
  • Carcinoma, Hepatocellular / pathology
  • Cell Line, Tumor
  • Cell Survival
  • Endoplasmic Reticulum / drug effects
  • Endoplasmic Reticulum / physiology*
  • Enzyme Inhibitors / pharmacology
  • Gene Expression Regulation, Neoplastic*
  • Genes, Reporter
  • Glucose / metabolism*
  • HSP70 Heat-Shock Proteins*
  • Humans
  • Hydrogen Peroxide / pharmacology
  • Luciferases / genetics
  • Luciferases / metabolism
  • Membrane Proteins*
  • Molecular Sequence Data
  • Mutagenesis, Insertional
  • Oxidants / pharmacology
  • Promoter Regions, Genetic
  • Proteins / chemistry
  • Proteins / genetics*
  • Proteins / metabolism
  • RNA, Messenger / metabolism
  • Selenoproteins
  • Sequence Homology, Amino Acid
  • Stress, Physiological / metabolism*
  • Thapsigargin / pharmacology
  • Time Factors
  • Tunicamycin / pharmacology

Substances

  • Enzyme Inhibitors
  • HSP70 Heat-Shock Proteins
  • Membrane Proteins
  • Oxidants
  • Proteins
  • RNA, Messenger
  • Selenoproteins
  • glucose-regulated proteins
  • Tunicamycin
  • Thapsigargin
  • Hydrogen Peroxide
  • Luciferases
  • Glucose