Reactive oxygen species activate glucose transport in L6 myotubes

Nitsan Kozlovsky, Assaf Rudich, Ruth Potashnik, Nava Bashan

Research output: Contribution to journalArticlepeer-review

68 Scopus citations


Under oxidative stress, increased energy requirements are needed to induce repair mechanisms. As glucose is a major energy source in L6 myotubes, we evaluated glucose metabolism and transport, following exposure to glucose oxidase (H2O2 generating system), or xanthine oxidase (O2' and H2O2 generating system), added to the medium. Exposure for 24 h to 5 mM glucose and 50 mU/ml glucose oxidase, or to 50 μM xanthine and 20 mU/ml xanthine oxiduse resulted in significant oxidant stress indicated by increased DNA binding activity of NF-κB. Under these conditions, approximately 2-fold increase in glucose consumption, lactate production and CO2 release were observed. 2-deoxyglucose uptake into myotubes increased time and dose dependently, reaching a 2.6 ± 0.4-fold and 2.2 ± 0.7-fold after 24 h exposure to glucose oxidase and xanthine oxiduse, respectively. Peroxidase prevented this effect, indicating the role of H2O2 in mediating glucose uptake activation. The elevation in glucose uptake under oxidative stress was associated with increased expression of GLUT1 mRNA and protein. The observed 2-deoxyglucose uptake activation by oxidants was not limited to the L6 cell line and was observed in 3T3-L1 adipocytes as well.

Original languageEnglish
Pages (from-to)859-869
Number of pages11
JournalFree Radical Biology and Medicine
Issue number6
StatePublished - 3 Oct 1997


  • GLUT1
  • Glucose transport
  • HO
  • Oxidative stress

ASJC Scopus subject areas

  • Biochemistry
  • Physiology (medical)


Dive into the research topics of 'Reactive oxygen species activate glucose transport in L6 myotubes'. Together they form a unique fingerprint.

Cite this