Journal
JOURNAL OF EXPERIMENTAL BIOLOGY
Volume 215, Issue 9, Pages 1425-1433Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jeb.054403
Keywords
antioxidant defense; metabolic rate depression; regulation of gene expression; reversible protein phosphorylation; signal transduction pathway; signaling cascade
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Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Research Chair in Molecular Physiology
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Aestivation is a survival strategy used by many vertebrates and invertebrates to endure arid environmental conditions. Key features of aestivation include strong metabolic rate suppression, strategies to retain body water, conservation of energy and body fuel reserves, altered nitrogen metabolism, and mechanisms to preserve and stabilize organs, cells and macromolecules over many weeks or months of dormancy. Cell signaling is crucial to achieving both a hypometabolic state and reorganizing multiple metabolic pathways to optimize long-term viability during aestivation. This commentary examines the current knowledge about cell signaling pathways that participate in regulating aestivation, including signaling cascades mediated by the AMP-activated kinase, Akt, ERK, and FoxO1.
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