Journal article
Malate-aspartate shuttle promotes l-lactate oxidation in mitochondria
Journal of cellular physiology, v 235(3), pp 2569-2581
Mar 2020
PMID: 31490559
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Metabolism in cancer cells is rewired to generate sufficient energy equivalents and anabolic precursors to support high proliferative activity. Within the context of these competing drives aerobic glycolysis is inefficient for the cancer cellular energy economy. Therefore, many cancer types, including colon cancer, reprogram mitochondria-dependent processes to fulfill their elevated energy demands. Elevated glycolysis underlying the Warburg effect is an established signature of cancer metabolism. However, there are a growing number of studies that show that mitochondria remain highly oxidative under glycolytic conditions. We hypothesized that activities of glycolysis and oxidative phosphorylation are coordinated to maintain redox compartmentalization. We investigated the role of mitochondria-associated malate-aspartate and lactate shuttles in colon cancer cells as potential regulators that couple aerobic glycolysis and oxidative phosphorylation. We demonstrated that the malate-aspartate shuttle exerts control over NAD
/NADH homeostasis to maintain activity of mitochondrial lactate dehydrogenase and to enable aerobic oxidation of glycolytic l-lactate in mitochondria. The elevated glycolysis in cancer cells is proposed to be one of the mechanisms acquired to accelerate oxidative phosphorylation.
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Details
- Title
- Malate-aspartate shuttle promotes l-lactate oxidation in mitochondria
- Creators
- Oya Altinok - Department of Surgery, Drexel University College of Medicine, Philadelphia, PennsylvaniaJuan L Poggio - Department of Surgery, Drexel University College of Medicine, Philadelphia, PennsylvaniaDavid E Stein - Department of Surgery, Drexel University College of Medicine, Philadelphia, PennsylvaniaWilbur B Bowne - Department of Surgery, Drexel University College of Medicine, Philadelphia, PennsylvaniaAdrian C Shieh - School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PennsylvaniaNathaniel W Snyder - Drexel University Autism Institute, Philadelphia, PennsylvaniaZulfiya Orynbayeva - Department of Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania
- Publication Details
- Journal of cellular physiology, v 235(3), pp 2569-2581
- Publisher
- Wiley; United States
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Surgery
- Web of Science ID
- WOS:000485829300001
- Scopus ID
- 2-s2.0-85071854222
- Other Identifier
- 991014878044604721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Cell Biology
- Physiology