Fructose-driven glycolysis supports anoxia resistance in the naked mole-rat

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Item Type:	Article
Title:	Fructose-driven glycolysis supports anoxia resistance in the naked mole-rat
Creators Name:	Park, T.J., Reznick, J., Peterson, B.L., Blass, G., Omerbašić, D., Bennett, N.C., Kuich, P.H.J.L., Zasada, C., Browe, B.M., Hamann, W., Applegate, D.T., Radke, M.H., Kosten, T., Lutermann, H., Gavaghan, V., Eigenbrod, O., Bégay, V., Amoroso, V. G., Govind, V., Minshall, R.D., Smith, E.S.J., Larson, J., Gotthardt, M., Kempa, S. and Lewin, G.R.
Abstract:	The African naked mole-rat's (Heterocephalus glaber) social and subterranean lifestyle generates a hypoxic niche. Under experimental conditions, naked mole-rats tolerate hours of extreme hypoxia and survive 18 minutes of total oxygen deprivation (anoxia) without apparent injury. During anoxia, the naked mole-rat switches to anaerobic metabolism fueled by fructose, which is actively accumulated and metabolized to lactate in the brain. Global expression of the GLUT5 fructose transporter and high levels of ketohexokinase were identified as molecular signatures of fructose metabolism. Fructose-driven glycolytic respiration in naked mole-rat tissues avoids feedback inhibition of glycolysis via phosphofructokinase, supporting viability. The metabolic rewiring of glycolysis can circumvent the normally lethal effects of oxygen deprivation, a mechanism that could be harnessed to minimize hypoxic damage in human disease.
Keywords:	Adaptation, Physiological, Anaerobiosis, Brain, Fructokinases, Fructose, Glucose Transporter Type 5, Glycolysis, Lactic Acid, Myocardium, Oxygen, Sucrose, Animals, Mice, Mole Rats
Source:	Science
ISSN:	0036-8075
Publisher:	American Association for the Advancement of Science
Volume:	356
Number:	6335
Page Range:	307-311
Date:	21 April 2017
Additional Information:	Copyright © 2017, American Association for the Advancement of Science.
Official Publication:	https://doi.org/10.1126/science.aab3896
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PubMed:	View item in PubMed

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