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Intermittent hypoxia within tumor microenvironments causes pro-oxidative stress impairing oxidative phosphorylation (OxPhos) and increases mitochondrial production of reactive oxygen species (ROS). In primary tumors this provokes metabolic reprogramming of both tumor cells and cancer stem cells and emergence of highly metastatic cancer cells. Tumor...
Results: Celecoxib was unique among the NSAIDs in that it showed particular potency as a cytotoxic drug against the metastatic cancer cells with IC50 values in the low micromolar range. Celecoxib rapidly enhanced mitochondrial superoxide production in situ from cancer cells within minutes, leading to a decrease in cellular respiration and dissipat...
Intracellular and extracellular functions of human galectin-1 are influenced by its redox surroundings due to the presence of six cysteines within its amino acid sequence. Galectin-1 recognises intracellular-membrane-anchored Ras proteins that act as molecular switches regulating multiple signal transduction pathways. Human tumours frequently expre...
Tumor metastases that impede the function of vital organs are a major cause of cancer related mortality. Mitochondrial oxidative stress induced by hypoxia, low nutrient levels, or other stresses, such as genotoxic events, act as key drivers of the malignant changes in primary tumors to enhance their progression to metastasis. Emerging evidence now...