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Cholesterol Pathway Inhibition Induces TGF-β Signaling to Promote Basal Differentiation in Pancreatic Cancer
Authors
Astsaturov I.
Cai K.Q.
+22 more
Chiaverelli R.
Cukierman E.
Fang C.Y.
Francescone R.
Franco-Barraza J.
Gabitova-Cornell L.
Goldman A.R.
Golemis E.A.
Handorf E.A.
Hartman T.R.
Khazak V.
Moffitt R.A.
Nicolas E.
O'Reilly A.M.
Ogier C.
Peri S.
Restifo D.
Shah N.
Sloma I.
Surumbayeva A.
Tan Y.
Weitz N.
Publication date
1 January 2020
Publisher
Abstract
© 2020 Elsevier Inc. 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
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Last time updated on 03/05/2021