Acetyl-CoA Metabolism Supports Multistep Pancreatic Tumorigenesis.

Abstract:

:Pancreatic ductal adenocarcinoma (PDA) has a poor prognosis, and new strategies for prevention and treatment are urgently needed. We previously reported that histone H4 acetylation is elevated in pancreatic acinar cells harboring Kras mutations prior to the appearance of premalignant lesions. Because acetyl-CoA abundance regulates global histone acetylation, we hypothesized that altered acetyl-CoA metabolism might contribute to metabolic or epigenetic alterations that promote tumorigenesis. We found that acetyl-CoA abundance is elevated in KRAS-mutant acinar cells and that its use in the mevalonate pathway supports acinar-to-ductal metaplasia (ADM). Pancreas-specific loss of the acetyl-CoA-producing enzyme ATP-citrate lyase (ACLY) accordingly suppresses ADM and tumor formation. In PDA cells, growth factors promote AKT-ACLY signaling and histone acetylation, and both cell proliferation and tumor growth can be suppressed by concurrent BET inhibition and statin treatment. Thus, KRAS-driven metabolic alterations promote acinar cell plasticity and tumor development, and targeting acetyl-CoA-dependent processes exerts anticancer effects. SIGNIFICANCE: Pancreatic cancer is among the deadliest of human malignancies. We identify a key role for the metabolic enzyme ACLY, which produces acetyl-CoA, in pancreatic carcinogenesis. The data suggest that acetyl-CoA use for histone acetylation and in the mevalonate pathway facilitates cell plasticity and proliferation, suggesting potential to target these pathways.See related commentary by Halbrook et al., p. 326.This article is highlighted in the In This Issue feature, p. 305.

journal_name

Cancer Discov

journal_title

Cancer discovery

authors

Carrer A,Trefely S,Zhao S,Campbell SL,Norgard RJ,Schultz KC,Sidoli S,Parris JLD,Affronti HC,Sivanand S,Egolf S,Sela Y,Trizzino M,Gardini A,Garcia BA,Snyder NW,Stanger BZ,Wellen KE

doi

10.1158/2159-8290.CD-18-0567

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

416-435

issue

3

eissn

2159-8274

issn

2159-8290

pii

2159-8290.CD-18-0567

journal_volume

9

pub_type

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