| Literature DB >> 17418408 |
Patrick J Pollard1, Bradley Spencer-Dene, Deepa Shukla, Kimberley Howarth, Emma Nye, Mona El-Bahrawy, Maesha Deheragoda, Maria Joannou, Stuart McDonald, Alison Martin, Peter Igarashi, Sunita Varsani-Brown, Ian Rosewell, Richard Poulsom, Patrick Maxwell, Gordon W Stamp, Ian P M Tomlinson.
Abstract
Germline mutations in the fumarate hydratase (FH) tumor suppressor gene predispose to leiomyomatosis, renal cysts, and renal cell cancer (HLRCC). HLRCC tumors overexpress HIF1alpha and hypoxia pathway genes. We conditionally inactivated mouse Fh1 in the kidney. Fh1 mutants developed multiple clonal renal cysts that overexpressed Hif1alpha and Hif2alpha. Hif targets, such as Glut1 and Vegf, were upregulated. We found that Fh1-deficient murine embryonic stem cells and renal carcinomas from HLRCC showed similar overexpression of HIF and hypoxia pathway components to the mouse cysts. Our data have shown in vivo that pseudohypoxic drive, resulting from HIF1alpha (and HIF2alpha) overexpression, is a direct consequence of Fh1 inactivation. Our mouse may be useful for testing therapeutic interventions that target angiogenesis and HIF-prolyl hydroxylation.Entities:
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Year: 2007 PMID： 17418408 DOI： 10.1016/j.ccr.2007.02.005
Source DB: PubMed Journal: Cancer Cell ISSN： 1535-6108 Impact factor: 31.743