A Role for Cytosolic Fumarate Hydratase in Urea Cycle Metabolism and Renal Neoplasia

Julie Adam, Ming Yang, Christina Bauerschmidt, Mitsuhiro Kitagawa, Linda O'Flaherty, Pratheesh Maheswaran, Gizem Özkan, Natasha Sahgal, Dilair Baban, Keiko Kato, Kaori Saito, Keiko Iino, Kaori Igarashi, Michael Stratford, Christopher Pugh, Daniel A Tennant, Christian Ludwig, Benjamin Davies, Peter J Ratcliffe, Mona El-BahrawyHouman Ashrafian, Tomoyoshi Soga, Patrick J Pollard

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The identification of mutated metabolic enzymes in hereditary cancer syndromes has established a direct link between metabolic dysregulation and cancer. Mutations in the Krebs cycle enzyme, fumarate hydratase (FH), predispose affected individuals to leiomyomas, renal cysts, and cancers, though the respective pathogenic roles of mitochondrial and cytosolic FH isoforms remain undefined. On the basis of comprehensive metabolomic analyses, we demonstrate that FH1-deficient cells and tissues exhibit defects in the urea cycle/arginine metabolism. Remarkably, transgenic re-expression of cytosolic FH ameliorated both renal cyst development and urea cycle defects associated with renal-specific FH1 deletion in mice. Furthermore, acute arginine depletion significantly reduced the viability of FH1-deficient cells in comparison to controls. Our findings highlight the importance of extramitochondrial metabolic pathways in FH-associated oncogenesis and the urea cycle/arginine metabolism as a potential therapeutic target.
Original languageEnglish
Pages (from-to)1440-1448
Number of pages9
JournalCell Reports
Issue number5
Publication statusPublished - 30 May 2013


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