Metabolic Relationships in Cancer Cells
The figure illustrates the intricate connections between the metabolome, proteome, and genome in cancer cells. It highlights the dysregulated glycolysis, down-regulated TCA cycle, and pathways supporting cancer cell proliferation. Enzymes and oncogenes crucial for the cancer metabolic phenotype are also depicted. Understanding these metabolic changes is vital for targeted cancer therapies.
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Presentation Transcript
WE Presentation #3, Lee et al Cell, A Lactate-Induced Response to Hypoxia 2015
Lee et al CELL 2015
The previous Figure illustrates the important relationships between metabolome, proteome, and genome in cancerous cells. Glycolysis breaks oxidizes glucose into 2 pyruvate, which is then fermented to lactate; pyruvate flux through the TCA cycle is down-regulated in cancer cells. Pathways branching off of glycolysis, such as the pentose phosphate pathway, generate biochemical building blocks to sustain the high proliferative rate of cancer cells. Blue boxes are enzymes important in transitioning to a cancer metabolic phenotype; orange boxes are enzymes that are mutated in cancer cells. Green ovals are oncogenes that are up-regulated in cancer; red ovals are tumor suppressors that are down-regulated in cancer. Figure abbreviations: 2PG: 2-phosphoglycerate; 3PG: 3-phosphoglycerate; BPG: 1,3-bisphosphoglycerate; CoA: coenzyme A; DHAP: dihydroxyacetone phosphate; F6P: fructose-6-phosphate; FBP: fructose-1,6-bisphosphate; G3P: glyceraldehyde-3- phospate; G6P: glucose-6-phosphate; HK: hexokinase; LDHA: lactate dehydrogenase A; PFK: phosphofructokinase; PI3K: phosphatidylinositide 3-kinase
