Authors
Wing-Hang Tong, Carole Sourbier, Gennady Kovtunovych, Suh Young Jeong, Manish Vira, Manik Ghosh, Vladimir Valera Romero, Rachid Sougrat, Sophie Vaulont, Benoit Viollet, Yeong-Sang Kim, Sunmin Lee, Jane Trepel, Ramaprasad Srinivasan, Gennady Bratslavsky, Youfeng Yang, W Marston Linehan, Tracey A Rouault
Publication date
2011/9/13
Journal
Cancer cell
Volume
20
Issue
3
Pages
315-327
Publisher
Cell Press
Description
Inactivation 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.
Total citations
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