Project description:Amino acids conjugated with even number carbon fatty acids using a coupling of the chloride fatty acids onto amine end of amino acids
Project description:Capuani2015 - Human Core Catabolic
Network
This model is described in the article:
Quantitative
constraint-based computational model of tumor-to-stroma
coupling via lactate shuttle
Fabrizio Capuani, Daniele De
Martino, Enzo Marinari & Andrea De Martino
Scientific Reports
Abstract:
Cancer cells utilize large amounts of ATP to sustain growth,
relying primarily on non-oxidative, fermentative pathways for
its production. In many types of cancers this leads, even in
the presence of oxygen, to the secretion of carbon equivalents
(usually in the form of lactate) in the cell’s
surroundings, a feature known as the Warburg effect. While the
molecular basis of this phenomenon are still to be elucidated,
it is clear that the spilling of energy resources contributes
to creating a peculiar microenvironment for tumors, possibly
characterized by a degree of toxicity. This suggests that
mechanisms for recycling the fermentation products (e.g. a
lactate shuttle) may be active, effectively inducing a mutually
beneficial metabolic coupling between aberrant and non-aberrant
cells. Here we analyze this scenario through a large-scale in
silico metabolic model of interacting human cells. By going
beyond the cell-autonomous description, we show that elementary
physico-chemical constraints indeed favor the establishment of
such a coupling under very broad conditions. The
characterization we obtained by tuning the aberrant
cell’s demand for ATP, amino-acids and fatty acids and/or
the imbalance in nutrient partitioning provides quantitative
support to the idea that synergistic multi-cell effects play a
central role in cancer sustainment.
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Project description:Normalized relative abundance measurement of amine-conjugated deoxycholic acids in B. fragilis P207 cultures in triplicate. All using positive ionization.
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