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2016 ; 34
(5
): 1163-76
Nephropedia Template TP
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Metabolic Reprogramming and Dependencies Associated with Epithelial Cancer Stem
Cells Independent of the Epithelial-Mesenchymal Transition Program
#MMPMID27146024
Aguilar E
; Marin de Mas I
; Zodda E
; Marin S
; Morrish F
; Selivanov V
; Meca-Cortés Ó
; Delowar H
; Pons M
; Izquierdo I
; Celià-Terrassa T
; de Atauri P
; Centelles JJ
; Hockenbery D
; Thomson TM
; Cascante M
Stem Cells
2016[May]; 34
(5
): 1163-76
PMID27146024
show ga
In solid tumors, cancer stem cells (CSCs) can arise independently of
epithelial-mesenchymal transition (EMT). In spite of recent efforts, the
metabolic reprogramming associated with CSC phenotypes uncoupled from EMT is
poorly understood. Here, by using metabolomic and fluxomic approaches, we
identify major metabolic profiles that differentiate metastatic prostate
epithelial CSCs (e-CSCs) from non-CSCs expressing a stable EMT. We have found
that the e-CSC program in our cellular model is characterized by a high
plasticity in energy substrate metabolism, including an enhanced Warburg effect,
a greater carbon and energy source flexibility driven by fatty acids and amino
acid metabolism and an essential reliance on the proton buffering capacity
conferred by glutamine metabolism. An analysis of transcriptomic data yielded a
metabolic gene signature for our e-CSCs consistent with the metabolomics and
fluxomics analyses that correlated with tumor progression and metastasis in
prostate cancer and in 11 additional cancer types. Interestingly, an integrated
metabolomics, fluxomics, and transcriptomics analysis allowed us to identify key
metabolic players regulated at the post-transcriptional level, suggesting
potential biomarkers and therapeutic targets to effectively forestall metastasis.
Stem Cells 2016;34:1163-1176.