Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/186243
Title: Identifying strategies to target the metabolic flexibility of tumours
Author: Méndez-Lucas, Andrés
Lin, Wei
Driscoll, Paul C.
Legrave, Nathalie
Novellasdemunt, Laura
Xie, Chencheng
Charles, Mark
Wilson, Zena
Jones, Neil P.
Rayport, Stephen
Rodríguez Justo, Manuel
Li, Vivian
MacRae, James I.
Hay, Nissim
Chen, Xin
Yuneva, Mariia
Keywords: Tumors
Àcids grassos
Metabolisme
Tumors
Fatty acids
Metabolism
Issue Date: 21-Apr-2020
Publisher: Nature Publishing Group
Abstract: Plasticity of cancer metabolism can be a major obstacle to efficient targeting of tumour-specific metabolic vulnerabilities. Here, we identify the compensatory mechanisms following the inhibition of major pathways of central carbon metabolism in c-MYC-induced liver tumours. We find that, while inhibition of both glutaminase isoforms (Gls1 and Gls2) in tumours considerably delays tumourigenesis, glutamine catabolism continues, owing to the action of amidotransferases. Synergistic inhibition of both glutaminases and compensatory amidotransferases is required to block glutamine catabolism and proliferation of mouse and human tumour cells in vitro and in vivo. Gls1 deletion is also compensated for by glycolysis. Thus, co-inhibition of Gls1 and hexokinase 2 significantly affects Krebs cycle activity and tumour formation. Finally, the inhibition of biosynthesis of either serine (Psat1-KO) or fatty acid (Fasn-KO) is compensated for by uptake of circulating nutrients, and dietary restriction of both serine and glycine or fatty acids synergistically suppresses tumourigenesis. These results highlight the high flexibility of tumour metabolism and demonstrate that either pharmacological or dietary targeting of metabolic compensatory mechanisms can improve therapeutic outcomes.
Note: Versió postprint del document publicat a: https://doi.org/10.1038/s42255-020-0195-8
It is part of: Nature Metabolism, 2020, vol. 2, num. 4, p. 335-350
URI: http://hdl.handle.net/2445/186243
Related resource: https://doi.org/10.1038/s42255-020-0195-8
ISSN: 2522-5812
Appears in Collections:Articles publicats en revistes (Ciències Fisiològiques)

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