
Targeting ABL1-mediated oxidative stress adaptation in fumarate hydratase-deficient cancer.
Patients with germline fumarate hydratase (FH) mutation are predisposed to develop aggressive kidney cancer with few treatment options and poor therapeutic outcomes. Activity of the proto-oncogene ABL1 is upregulated in FH-deficient kidney tumors and drives a metabolic and survival signaling network necessary to cope with impaired mitochondrial function and abnormal accumulation of intracellular fumarate. Excess fumarate indirectly stimulates ABL1 activity, while restoration of wild-type FH abrogates both ABL1 activation and the cytotoxicity caused by ABL1 inhibition or knockdown. ABL1 upregulates aerobic glycolysis via the mTOR/HIF1α pathway and neutralizes fumarate-induced proteotoxic stress by promoting nuclear localization of the antioxidant response transcription factor NRF2. Our findings identify ABL1 as a pharmacologically tractable therapeutic target in glycolytically dependent, oxidatively stressed tumors.
Duke Scholars
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Related Subject Headings
- Xenograft Model Antitumor Assays
- Signal Transduction
- Quinazolines
- Proto-Oncogene Proteins c-abl
- Proto-Oncogene Mas
- Piperidines
- Oxidative Stress
- Oncology & Carcinogenesis
- Neoplasms, Experimental
- NF-E2-Related Factor 2
Citation

Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Xenograft Model Antitumor Assays
- Signal Transduction
- Quinazolines
- Proto-Oncogene Proteins c-abl
- Proto-Oncogene Mas
- Piperidines
- Oxidative Stress
- Oncology & Carcinogenesis
- Neoplasms, Experimental
- NF-E2-Related Factor 2