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2014 ; 159
(7
): 1591-602
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Acetate dependence of tumors
#MMPMID25525877
Comerford SA
; Huang Z
; Du X
; Wang Y
; Cai L
; Witkiewicz AK
; Walters H
; Tantawy MN
; Fu A
; Manning HC
; Horton JD
; Hammer RE
; McKnight SL
; Tu BP
Cell
2014[Dec]; 159
(7
): 1591-602
PMID25525877
show ga
Acetyl-CoA represents a central node of carbon metabolism that plays a key role
in bioenergetics, cell proliferation, and the regulation of gene expression.
Highly glycolytic or hypoxic tumors must produce sufficient quantities of this
metabolite to support cell growth and survival under nutrient-limiting
conditions. Here, we show that the nucleocytosolic acetyl-CoA synthetase enzyme,
ACSS2, supplies a key source of acetyl-CoA for tumors by capturing acetate as a
carbon source. Despite exhibiting no gross deficits in growth or development,
adult mice lacking ACSS2 exhibit a significant reduction in tumor burden in two
different models of hepatocellular carcinoma. ACSS2 is expressed in a large
proportion of human tumors, and its activity is responsible for the majority of
cellular acetate uptake into both lipids and histones. These observations may
qualify ACSS2 as a targetable metabolic vulnerability of a wide spectrum of
tumors.