Exp Neurobiol.
2012 Jun;21(2):52-60. 10.5607/en.2012.21.2.52.
AMP-Activated Protein Kinase (AMPK) and Energy-Sensing in the Brain
- Affiliations
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- 1Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. gronnett@jhmi.edu
- 2Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
- 3Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
- 4Center for Metabolism and Obesity Research, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
- 5Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 711-873, Korea.
- KMID: 1438549
- DOI: http://doi.org/10.5607/en.2012.21.2.52
Abstract
- 5'-adenosine monophosphate-activated protein kinase (AMPK) is an evolutionarily conserved cellular and organismal energy integrator that responds to numerous stimuli with the overall intention to facilitate energy conservation and enhance energy balance while also affecting cellular survival and behaviors. AMPK has been appreciated for many years to function in peripheral organs that contribute to the generation or disposition of cellular energy, while its role in the brain has been only recently elucidated. While acknowledged to respond to organismal energy balance, we now recognize that energy balance within neurons also affects the brain's response to these peripheral signals. In this review, we discuss AMPK's regulation and its ever-expanding role as a neuronal energy integrator at both the cellular and systems levels.
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