Mycielska, M.E.* ; Dettmer, K.* ; Rümmele, P.* ; Schmidt, K.* ; Prehn, C. ; Milenkovic, V.M.* ; Jagla, W.* ; Madej, M.G.* ; Lantow, M.* ; Schladt, M.T.* ; Cecil, A. ; Koehl, G.E.* ; Eggenhofer, E.* ; Wachsmuth, C.J.* ; Ganapathy, V.* ; Schlitt, H.J.* ; Kunzelmann, K.* ; Ziegler, C.* ; Wetzel, C.H.* ; Gaumann, A.* ; Lang, S.A.* ; Adamski, J. ; Oefner, P.J.* ; Geissler, E.K.*
Extracellular citrate affects critical elements of cancer cell metabolism and supports cancer development in vivo.
Cancer Res. 78, 2513-2523 (2018)
Glycolysis and fatty acid synthesis are highly active in cancer cells through cytosolic citrate metabolism, with intracellular citrate primarily derived from either glucose or glutamine via the tricarboxylic acid cycle. We show here that extracellular citrate is supplied to cancer cells through a plasma membrane-specific variant of the mitochondrial citrate transporter (pmCiC). Metabolomic analysis revealed that citrate uptake broadly affected cancer cell metabolism through citrate-dependent metabolic pathways. Treatment with gluconate specifically blocked pmCiC and decreased tumor growth in murine xenografts of human pancreatic cancer. This treatment altered metabolism within tumors, including fatty acid metabolism. High expression of pmCiC was associated with invasion and advanced tumor stage across many human cancers. These findings support the exploration of extracellular citrate transport as a novel potential target for cancer therapy. Significance: Uptake of extracellular citrate through pmCiC can be blocked with gluconate to reduce tumor growth and to alter metabolic characteristics of tumor tissue.
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Article: Journal article
Document type
Scientific Article
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Keywords plus
Language
english
Publication Year
2018
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2018
ISSN (print) / ISBN
0008-5472
e-ISSN
1538-7445
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Volume: 78,
Issue: 10,
Pages: 2513-2523
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American Association for Cancer Research (AACR)
Publishing Place
Philadelphia, Pa.
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0000-00-00
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0000-00-00
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Peer reviewed
POF-Topic(s)
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
30201 - Metabolic Health
Research field(s)
Genetics and Epidemiology
PSP Element(s)
A-630440-001
G-505600-002
G-500600-001
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Erfassungsdatum
2018-03-09