Abstract
Purpose
Metabolic dependence on glucose utilisation has been described for different tumours characterised by activation of Akt, upregulation of GLUT1, M2PK and TKTL1. To date, however, little is known about glucose metabolism in breast cancer tissue.
Methods
We analysed 55 breast cancer specimens, 26 adjacent ductal carcinomas in situ (DCIS) and 23 adjacent normal breast tissues for expression of glycolytic markers by immunohistochemistry.
Results
We found expression of pAkt in 49%, GLUT1 in 25%, M2PK in 68% and TKTL1 in 31% of the tumours investigated. Expression of pAkt and Her2neu are positively correlated with borderline significance (P = 0.055). Expression of pAkt, GLUT1 and TKTL1 were higher in breast cancer and DCIS than in normal tissue. Surprisingly, M2PK expression was highest in normal breast tissue.
Conclusions
We found a glycolytic phenotype in a high percentage of breast cancer samples. Inhibition of glycolysis might evolve as a future option for breast cancer therapy.
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Acknowledgments
We thank André Schmidt and Kurt Weigand for their valuable discussions, Marianne Florey for critical review of the manuscript, as well as Tanja Kottmann for statistical analysis. This study was supported by the Medical Faculty of the University of Wuerzburg and “Hilfe im Kampf gegen Krebs e.V.”
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Schmidt, M., Voelker, HU., Kapp, M. et al. Glycolytic phenotype in breast cancer: activation of Akt, up-regulation of GLUT1, TKTL1 and down-regulation of M2PK. J Cancer Res Clin Oncol 136, 219–225 (2010). https://doi.org/10.1007/s00432-009-0652-y
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DOI: https://doi.org/10.1007/s00432-009-0652-y