Abstract
Oncogenic transformation alters lipid metabolism to sustain tumor growth. We define a mechanism by which cholesterol metabolism controls the development and differentiation of pancreatic ductal adenocarcinoma (PDAC). Disruption of distal cholesterol biosynthesis by conditional inactivation of the rate-limiting enzyme Nsdhl or treatment with cholesterol-lowering statins switches glandular pancreatic carcinomas to a basal (mesenchymal) phenotype in mouse models driven by KrasG12D expression and homozygous Trp53 loss. Consistently, PDACs in patients receiving statins show enhanced mesenchymal features. Mechanistically, statins and NSDHL loss induce SREBP1 activation, which promotes the expression of Tgfb1, enabling epithelial-mesenchymal transition. Evidence from patient samples in this study suggests that activation of transforming growth factor β signaling and epithelial-mesenchymal transition by cholesterol-lowering statins may promote the basal type of PDAC, conferring poor outcomes in patients.
Original language | English |
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Pages (from-to) | 567-583.e11 |
Journal | Cancer Cell |
Volume | 38 |
Issue number | 4 |
DOIs | |
State | Published - Oct 12 2020 |
Keywords
- 3-Hydroxysteroid Dehydrogenases/genetics
- Animals
- Atorvastatin/pharmacology
- Biosynthetic Pathways/genetics
- Carcinoma, Pancreatic Ductal/drug therapy
- Cell Differentiation/drug effects
- Cell Line, Tumor
- Cholesterol, LDL/biosynthesis
- Epithelial-Mesenchymal Transition/drug effects
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology
- Kaplan-Meier Estimate
- Mice, Inbred C57BL
- Mice, Knockout
- Pancreatic Neoplasms/drug therapy
- Signal Transduction/genetics
- Transforming Growth Factor beta/genetics
- Xenograft Model Antitumor Assays/methods
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