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- W2890256218 abstract "Triple-negative breast cancer is an aggressive subtype of breast cancer with low 5-year survival rates, high 3-year recurrence rates, and no known therapeutic targets. Recent studies have indicated that triple-negative breast cancers possess an altered metabolic state with higher rates of glycolysis, mitochondrial oxidative phosphorylation, and increased generation and utilization of tricarboxylic acid cycle intermediates. Here, we utilized label-free quantitative proteomics to gain insight into the anticancer mechanisms of a methanolic extract from the Central American plant Lippia origanoides on MDA-MB-231 triple-negative breast cancer cells. The L. origanoides extract dysregulated mitochondrial oxidative phosphorylation by suppressing the expression of several subunits of Complex I of the electron transport chain, and inhibited cellular metabolism by down-regulating key tricarboxylic acid cycle enzymes and mitochondrial lipid and amino-acid metabolic pathways. Our study also revealed that treatment with the extract activated the stress response and pathways related to cell-cycle progression and DNA repair. Overall, our results reveal compelling new evidence that the extract from L. origanodes triggers rapid irreversible apoptosis in MDA-MB-231 cells by effectively ‘starving’ the cells of metabolites and ATP. We continue to study the specific bioactive components of the extract in the search for novel, highly effective mitochondrial inhibitors to selectively target triple-negative breast cancer." @default.
- W2890256218 created "2018-09-27" @default.
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- W2890256218 date "2018-09-06" @default.
- W2890256218 modified "2023-10-13" @default.
- W2890256218 title "Proteomic Analysis Reveals That an Extract of the Plant <i>Lippia origanoides</i> Suppresses Mitochondrial Metabolism in Triple-Negative Breast Cancer Cells" @default.
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- W2890256218 doi "https://doi.org/10.1021/acs.jproteome.8b00255" @default.
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