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Cholesterol deprivation induces TGFβ signaling to promote basal differentiation in pancreatic cancer

Gabitova-Cornell, Linara
; 
Surumbayeva, Aizhan
; 
Peri, Suraj
; ; ; 
Weitz, Nicole
; 
Ogier, Charline
; 
Goldman, Aaron R.
; ; ... show 10 more
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Pre-print
Date
2020-10-12
Advisor
Committee member
Group
Fox Chase Cancer Center (Temple University)
Department
Cancer and Cellular Biology
Subject
Cholesterol metabolism
 Pancreatic cancer
 Epithelial-to-mesenchymal transition
 TGF-β signaling
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http://hdl.handle.net/20.500.12613/9184
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GolemisEtAl-PrePrint-2020-10.pdf
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DOI
http://dx.doi.org/10.1101/633719
Abstract
Oncogenic transformation alters the metabolism of cellular nutrients to sustain tumor growth. We here define a mechanism by which modifications in cholesterol metabolism control the formation of pancreatic ductal adenocarcinoma (PDAC). Disruption of distal cholesterol biosynthesis by means of conditional inactivation of Nsdhl in mice bearing a tumor-inducing Kras mutation (KrasG12D) prevented PDAC formation in the context of a heterozygous Trp53f/+genotype without impairing normal pancreatic development. In mice with pancreatic Nsdhl ablation and homozygous loss of Trp53, the emerging tumors presented with the aggressive basal (mesenchymal) phenotype as opposed to the classic (glandular) PDAC. This paralleled significantly reduced expression of cholesterol metabolic pathway genes in human basal PDAC subtype. Mechanistically, we demonstrate that genetic or metabolic cholesterol deprivation stabilizes the transforming growth factor beta (TGFβ) receptor to activate pro-mesenchymal effectors in human and murine PDAC, providing a direct mechanism by which cholesterol metabolism can condition tumor differentiation.
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Citation
Gabitova-Cornell L, Surumbayeva A, Peri S, Franco-Barraza J, Restifo D, Weitz N, et al. Cholesterol deprivation induces TGFβ signaling to promote basal differentiation in pancreatic cancer. Cancer Cell. 2020 Oct 12;38(4):567-583.e11. doi:10.1016/j.ccell.2020.08.015.
Citation to related work
Cell Press
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Cancer Cell, Vol. 38, Iss. 4
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