Epithelial-mesenchymal transition is the main driver of intrinsic metabolism in cancer cell lines

Author:

Cherkaoui SarahORCID,Durot StephanORCID,Bradley Jenna,Critchlow Susan,Dubuis Sebastien,Masiero Mauro Miguel,Wegmann RebekkaORCID,Snijder BerendORCID,Othman Alaa,Bendtsen ClausORCID,Zamboni NicolaORCID

Abstract

AbstractA fundamental feature of cancer cells is genomic heterogeneity. It is a main driver of phenotypic differences, including the response to drugs, and therefore a key factor in therapy selection. Motivated by the increasing role attributed to metabolic reprogramming in tumor development, we wondered how genomic heterogeneity affects metabolic phenotype. To this end, we profiled the intracellular metabolome of 180 cancer cell lines grown in similar conditions to exclude environmental factors. For each cell line, we estimate activity for 49 pathways across the whole metabolic network. Upon clustering of activity data, we found a convergence into only two major metabolic types. These were further characterized by 13C-flux analysis, lipidomics, and analysis of sensitivity to perturbations. These experiments revealed differences in lipid, mitochondrial, and carbohydrate metabolism between the two major types. Finally, a thorough integration of our metabolic data with multiple omics data revealed a strong association with markers of epithelial-mesenchymal transition (EMT). Our analysis indicates that in absence of variations imposed by the microenvironment, the metabolism of cancer cell lines falls into only two major classes despite genetic heterogeneity.

Publisher

Cold Spring Harbor Laboratory

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