Metabolomics

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Distinct metabolic responses of an ovarian cancer stem cell line


ABSTRACT:

Background

Cancer metabolism is emerging as an important focus area in cancer research. However, the in vitro cell culture conditions under which much cellular metabolism research is performed differ drastically from in vivo tumor conditions, which are characterized by variations in the levels of oxygen, nutrients like glucose, and other molecules like chemotherapeutics. Moreover, it is important to know how the diverse cell types in a tumor, including cancer stem cells that are believed to be a major cause of cancer recurrence, respond to these variations. Here, in vitro environmental perturbations designed to mimic different aspects of the in vivo environment were used to characterize how an ovarian cancer cell line and its derived, isogenic cancer stem cells metabolically respond to environmental cues.

Results

Mass spectrometry was used to profile metabolite levels in response to in vitro environmental perturbations. Docetaxel, the chemotherapeutic used for this experiment, caused significant metabolic changes in amino acid and carbohydrate metabolism in ovarian cancer cells, but had virtually no metabolic effect on isogenic ovarian cancer stem cells. Glucose deprivation, hypoxia, and the combination thereof altered ovarian cancer cell and cancer stem cell metabolism to varying extents for the two cell types. Hypoxia had a much larger effect on ovarian cancer cell metabolism, while glucose deprivation had a greater effect on ovarian cancer stem cell metabolism. Core metabolites and pathways affected by these perturbations were identified, along with pathways that were unique to cell types or perturbations.

Conclusions

The metabolic responses of an ovarian cancer cell line and its derived isogenic cancer stem cells differ greatly under most conditions, suggesting that these two cell types may behave quite differently in an in vivo tumor microenvironment. While cancer metabolism and cancer stem cells are each promising potential therapeutic targets, such varied behaviors in vivo would need to be considered in the design and early testing of such treatments.

INSTRUMENT(S): LECO Pegasus 4D

SUBMITTER: Kathleen Vermeersch 

PROVIDER: MTBLS150 | MetaboLights | 2021-11-05

REPOSITORIES: MetaboLights

Dataset's files

Source:
Action DRS
MTBLS150 Other
FILES Other
a_MTBLS150_perturbationoccandocsc_metabolite_profiling_mass_spectrometry.txt Txt
files-all.json Other
i_Investigation.txt Txt
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Publications

Distinct metabolic responses of an ovarian cancer stem cell line.

Vermeersch Kathleen A KA   Wang Lijuan L   McDonald John F JF   Styczynski Mark P MP  

BMC systems biology 20141218


<h4>Background</h4>Cancer metabolism is emerging as an important focus area in cancer research. However, the in vitro cell culture conditions under which much cellular metabolism research is performed differ drastically from in vivo tumor conditions, which are characterized by variations in the levels of oxygen, nutrients like glucose, and other molecules like chemotherapeutics. Moreover, it is important to know how the diverse cell types in a tumor, including cancer stem cells that are believed  ...[more]

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