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Open AccessJournal ArticleDOI

Interdependence of AMPK and SIRT1 for Metabolic Adaptation to Fasting and Exercise in Skeletal Muscle

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TLDR
It is concluded that AMPK acts as the primordial trigger for fasting- and exercise-induced adaptations in skeletal muscle and that activation of SIRT1 and its downstream signaling pathways are improperly triggered in AMPK-deficient states.
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This article is published in Cell Metabolism.The article was published on 2010-03-03 and is currently open access. It has received 769 citations till now. The article focuses on the topics: AMPK & AMP-activated protein kinase.

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Citations
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AMPK: a nutrient and energy sensor that maintains energy homeostasis

TL;DR: AMP-activated protein kinase conserves ATP levels through the regulation of processes other than metabolism, such as the cell cycle and neuronal membrane excitability.
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The AMPK signalling pathway coordinates cell growth, autophagy and metabolism

TL;DR: A number of recent breakthroughs in the mechanistic understanding of AMPK function are reviewed, focusing on a number of newly identified downstream effectors of AM PK.
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Mitochondria: In Sickness and in Health

TL;DR: This work provides a current view of how mitochondrial functions impinge on health and disease and identifies mitochondrial dysfunction as a key factor in a myriad of diseases, including neurodegenerative and metabolic disorders.
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Autophagy and Aging

TL;DR: The probable cause and effect relationship between perturbed autophagy and aging is discussed, as well as possible molecular mechanisms that may mediate the anti-aging effects of Autophagy.
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Sirtuins as regulators of metabolism and healthspan

TL;DR: The mammalian sirtuin protein family (comprising SIRT1–SIRT7) has received much attention for its regulatory role, mainly in metabolism and ageing, thereby acting as crucial regulators of the network that controls energy homeostasis and as such determines healthspan.
References
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Journal ArticleDOI

Nutrient control of glucose homeostasis through a complex of PGC-1alpha and SIRT1.

TL;DR: It is shown that the Sir2 homologue, SIRT1 controls the gluconeogenic/glycolytic pathways in liver in response to fasting signals through the transcriptional coactivator PGC-1α, and this findings have strong implications for the basic pathways of energy homeostasis, diabetes and lifespan.
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AMPK regulates energy expenditure by modulating NAD + metabolism and SIRT1 activity

TL;DR: It is demonstrated that AMPK controls the expression of genes involved in energy metabolism in mouse skeletal muscle by acting in coordination with another metabolic sensor, the NAD+-dependent type III deacetylase SIRT1.
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AMP-activated/SNF1 protein kinases: conserved guardians of cellular energy.

TL;DR: Surprisingly, recent results indicate that the AMPK system is also important in functions that go beyond the regulation of energy homeostasis, such as the maintenance of cell polarity in epithelial cells.
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AMP-activated protein kinase (AMPK) action in skeletal muscle via direct phosphorylation of PGC-1α

TL;DR: The data indicate that AMPK phosphorylation of PGC-1α initiates many of the important gene regulatory functions of AMPK in skeletal muscle.
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