Mitochondrial Matrix Ca 2+ Accumulation Regulates Cytosolic NAD + /NADH Metabolism, Protein Acetylation, and Sirtuin Expression
                    
                        
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                    چکیده
منابع مشابه
Mitochondrial matrix Ca²⁺ accumulation regulates cytosolic NAD⁺/NADH metabolism, protein acetylation, and sirtuin expression.
Mitochondrial calcium uptake stimulates bioenergetics and drives energy production in metabolic tissue. It is unknown how a calcium-mediated acceleration in matrix bioenergetics would influence cellular metabolism in glycolytic cells that do not require mitochondria for ATP production. Using primary human endothelial cells (ECs), we discovered that repetitive cytosolic calcium signals (oscillat...
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The sirtuins are a family of nicotinamide adenine dinucleotide (NAD(+))-dependent protein deacetylases that regulate cell survival, metabolism, and longevity. Humans have seven sirtuins (SIRT1-SIRT7) with distinct subcellular locations and functions. SIRT3 is localized to the mitochondrial matrix and its expression is selectively activated during fasting and calorie restriction. Activated SIRT3...
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Cytosolic free NAD/NADH ratio is fundamentally important in maintaining cellular redox homeostasis but current techniques cannot distinguish between protein-bound and free NAD/NADH. Williamson et al reported a method to estimate this ratio by cytosolic lactate/pyruvate (L/P) based on the principle of chemical equilibrium. Numerous studies used L/P ratio to estimate the cytosolic free NAD/NADH r...
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The pyridine nucleotides, NAD(+) and NADH, are coenzymes that provide oxidoreductive power for the generation of ATP by mitochondria. In skeletal muscle, exercise perturbs the levels of NAD(+), NADH, and consequently, the NAD(+)/NADH ratio, and initial research in this area focused on the contribution of redox control to ATP production. More recently, numerous signaling pathways that are sensit...
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ژورنال
عنوان ژورنال: Molecular and Cellular Biology
سال: 2014
ISSN: 0270-7306,1098-5549
DOI: 10.1128/mcb.00068-14