The glycolytic shift in fumarate-hydratase-deficient kidney cancer lowers AMPK levels, increases anabolic propensities and lowers cellular iron levels
Vira, Manish A.
Ghosh, Manik Chandra
Romero, Vladimir Valera
Trepel, Jane B.
Linehan, William Marston
Rouault, Tracey A.
Embargo End Date2012-09-11
Permanent link to this recordhttp://hdl.handle.net/10754/561857
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AbstractInactivation of the TCA cycle enzyme, fumarate hydratase (FH), drives a metabolic shift to aerobic glycolysis in FH-deficient kidney tumors and cell lines from patients with hereditary leiomyomatosis renal cell cancer (HLRCC), resulting in decreased levels of AMP-activated kinase (AMPK) and p53 tumor suppressor, and activation of the anabolic factors, acetyl-CoA carboxylase and ribosomal protein S6. Reduced AMPK levels lead to diminished expression of the DMT1 iron transporter, and the resulting cytosolic iron deficiency activates the iron regulatory proteins, IRP1 and IRP2, and increases expression of the hypoxia inducible factor HIF-1α, but not HIF-2α. Silencing of HIF-1α or activation of AMPK diminishes invasive activities, indicating that alterations of HIF-1α and AMPK contribute to the oncogenic growth of FH-deficient cells. © 2011 Elsevier Inc.
CitationTong, W.-H., Sourbier, C., Kovtunovych, G., Jeong, S. Y., Vira, M., Ghosh, M., … Rouault, T. A. (2011). The Glycolytic Shift in Fumarate-Hydratase-Deficient Kidney Cancer Lowers AMPK Levels, Increases Anabolic Propensities and Lowers Cellular Iron Levels. Cancer Cell, 20(3), 315–327. doi:10.1016/j.ccr.2011.07.018
SponsorsThe authors thank our colleagues and thank the intramural programs of the National Institute of Child Health and Human Development and the National Cancer Institute for support.
PubMed Central IDPMC3174047
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