Unknown,Transcriptomics,Genomics,Proteomics

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An antioxidant response phenotype is shared between hereditary and sporadic type 2 papillary renal cell carcinoma


ABSTRACT: Fumarate hydratase (FH) mutation causes hereditary type 2 papillary renal cell carcinoma (HLRCC, Hereditary Leiomyomatosis and Renal Cell Cancer (MM ID # 605839)). The main effect of FH mutation is fumarate accumulation. The current paradigm posits that the main consequence of fumarate accumulation is HIF-a stabilization. Paradoxically, FH mutation differs from other HIF-a stabilizing mutations, such as VHL and SDH mutations, in its associated tumor types. We identified that fumarate can directly up-regulate antioxidant response element (ARE)-controlled genes. We demonstrated that AKR1B10 is an ARE-controlled gene and is up-regulated upon FH knockdown as well as in FH-null cell lines. AKR1B10 overexpression is also a prominent feature in both hereditary and sporadic PRCC2. This phenotype better explains the similarities between hereditary and sporadic PRCC2. Expression profiling renal normal and tumor tissue

ORGANISM(S): Homo sapiens

SUBMITTER: Karl Dykema 

PROVIDER: E-GEOD-26574 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Fumarate hydratase (FH) mutation causes hereditary type 2 papillary renal cell carcinoma (PRCC2). The main effect of FH mutation is fumarate accumulation. The current paradigm posits that the main consequence of fumarate accumulation is HIF-α stabilization. Paradoxically, FH mutation differs from other HIF-α stabilizing mutations, such as VHL and SDH mutations, in its associated tumor types. We identified that fumarate can directly up-regulate antioxidant response element (ARE)-controlled genes.  ...[more]

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