Reviews |
From the Division of Molecular Physiology, College of Life Sciences, University of Dundee, Scotland, UK.
Correspondence to Prof D. G. Hardie, Division of Molecular Physiology, College of Life Sciences, University of Dundee, Sir James Black Centre, Dow St, Dundee, DD1 5EH, Scotland, UK. E-mail d.g.hardie{at}dundee.ac.uk
This Review is part of a thematic series on AMP Kinase, which includes the following articles:
AMP-Activated Protein Kinase in Metabolic Control and Insulin Signaling
Cardiac AMP-Activated Protein Kinase in Health and Disease
Bruce Kemp Guest Editor
The AMP-activated protein kinase (AMPK) system acts as a sensor of cellular energy status that is conserved in all eukaryotic cells. It is activated by increases in the cellular AMP:ATP ratio caused by metabolic stresses that either interfere with ATP production (eg, deprivation for glucose or oxygen) or that accelerate ATP consumption (eg, muscle contraction). Activation in response to increases in AMP involves phosphorylation by an upstream kinase, the tumor suppressor LKB1. In certain cells (eg, neurones, endothelial cells, and lymphocytes), AMPK can also be activated by a Ca2+-dependent and AMP-independent process involving phosphorylation by an alternate upstream kinase, CaMKKß. Once activated, AMPK switches on catabolic pathways that generate ATP, while switching off ATP-consuming processes such as biosynthesis and cell growth and proliferation. The AMPK complex contains 3 subunits, with the
subunit being catalytic, the ß subunit containing a glycogen-sensing domain, and the
subunits containing 2 regulatory sites that bind the activating and inhibitory nucleotides AMP and ATP. Although it may have evolved to respond to metabolic stress at the cellular level, hormones and cytokines such as insulin, leptin, and adiponectin can interact with the system, and it now appears to play a key role in maintaining energy balance at the whole body level. The AMPK system may be partly responsible for the health benefits of exercise and is the target for the antidiabetic drug metformin. It is a key player in the development of new treatments for obesity, type 2 diabetes, and the metabolic syndrome.
Key Words: calcium signaling diabetes insulin metabolism signaling pathways
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H. Lee, J. S. Cho, N. Lambacher, J. Lee, S.-J. Lee, T. H. Lee, A. Gartner, and H.-S. Koo The Caenorhabditis elegans AMP-activated Protein Kinase AAK-2 Is Phosphorylated by LKB1 and Is Required for Resistance to Oxidative Stress and for Normal Motility and Foraging Behavior J. Biol. Chem., May 30, 2008; 283(22): 14988 - 14993. [Abstract] [Full Text] [PDF] |
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J. A. Chavez, W. G. Roach, S. R. Keller, W. S. Lane, and G. E. Lienhard Inhibition of GLUT4 Translocation by Tbc1d1, a Rab GTPase-activating Protein Abundant in Skeletal Muscle, Is Partially Relieved by AMP-activated Protein Kinase Activation J. Biol. Chem., April 4, 2008; 283(14): 9187 - 9195. [Abstract] [Full Text] [PDF] |
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S. L. McGee, B. J.W. van Denderen, K. F. Howlett, J. Mollica, J. D. Schertzer, B. E. Kemp, and M. Hargreaves AMP-Activated Protein Kinase Regulates GLUT4 Transcription by Phosphorylating Histone Deacetylase 5 Diabetes, April 1, 2008; 57(4): 860 - 867. [Abstract] [Full Text] [PDF] |
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X. Yang, C. Yang, A. Farberman, T. C. Rideout, C. F. M. de Lange, J. France, and M. Z. Fan The mammalian target of rapamycin-signaling pathway in regulating metabolism and growth J Anim Sci, April 1, 2008; 86(14_suppl): E36 - E50. [Abstract] [Full Text] [PDF] |
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S. L. McGee, K. J. Mustard, D. G. Hardie, and K. Baar Normal hypertrophy accompanied by phosphoryation and activation of AMP-activated protein kinase {alpha}1 following overload in LKB1 knockout mice J. Physiol., March 15, 2008; 586(6): 1731 - 1741. [Abstract] [Full Text] [PDF] |
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M. Lu, Q. Tang, J. M. Olefsky, P. L. Mellon, and N. J. G. Webster Adiponectin Activates Adenosine Monophosphate-Activated Protein Kinase and Decreases Luteinizing Hormone Secretion in L{beta}T2 Gonadotropes Mol. Endocrinol., March 1, 2008; 22(3): 760 - 771. [Abstract] [Full Text] [PDF] |
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F. F. Chehab Minireview: Obesity and LipOdystrophy--Where Do the Circles Intersect? Endocrinology, March 1, 2008; 149(3): 925 - 934. [Abstract] [Full Text] [PDF] |
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M. E. Osler and J. R. Zierath Minireview: Adenosine 5'-Monophosphate-Activated Protein Kinase Regulation of Fatty Acid Oxidation in Skeletal Muscle Endocrinology, March 1, 2008; 149(3): 935 - 941. [Abstract] [Full Text] [PDF] |
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T. Miyamoto, N. Oshiro, K.-i. Yoshino, A. Nakashima, S. Eguchi, M. Takahashi, Y. Ono, U. Kikkawa, and K. Yonezawa AMP-activated Protein Kinase Phosphorylates Golgi-specific Brefeldin A Resistance Factor 1 at Thr1337 to Induce Disassembly of Golgi Apparatus J. Biol. Chem., February 15, 2008; 283(7): 4430 - 4438. [Abstract] [Full Text] [PDF] |
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L. H. Young AMP-Activated Protein Kinase Conducts the Ischemic Stress Response Orchestra Circulation, February 12, 2008; 117(6): 832 - 840. [Full Text] [PDF] |
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D. M. Thomson, S. T. Herway, N. Fillmore, H. Kim, J. D. Brown, J. R. Barrow, and W. W. Winder AMP-activated protein kinase phosphorylates transcription factors of the CREB family J Appl Physiol, February 1, 2008; 104(2): 429 - 438. [Abstract] [Full Text] [PDF] |
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P. Dobrzyn, H. Sampath, A. Dobrzyn, M. Miyazaki, and J. M. Ntambi Loss of stearoyl-CoA desaturase 1 inhibits fatty acid oxidation and increases glucose utilization in the heart Am J Physiol Endocrinol Metab, February 1, 2008; 294(2): E357 - E364. [Abstract] [Full Text] [PDF] |
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W.-J. Zhang, K. E. Bird, T. S. McMillen, R. C. LeBoeuf, T. M. Hagen, and B. Frei Dietary {alpha}-Lipoic Acid Supplementation Inhibits Atherosclerotic Lesion Development in Apolipoprotein E Deficient and Apolipoprotein E/Low-Density Lipoprotein Receptor Deficient Mice Circulation, January 22, 2008; 117(3): 421 - 428. [Abstract] [Full Text] [PDF] |
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E. G. Beale 5'-AMP-Activated Protein Kinase Signaling in Caenorhabditis elegans Experimental Biology and Medicine, January 1, 2008; 233(1): 12 - 20. [Abstract] [Full Text] [PDF] |
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D. Zheng, A. Perianayagam, D. H. Lee, M. D. Brannan, L. E. Yang, D. Tellalian, P. Chen, K. Lemieux, A. Marette, J. H. Youn, et al. AMPK activation with AICAR provokes an acute fall in plasma [K+] Am J Physiol Cell Physiol, January 1, 2008; 294(1): C126 - C135. [Abstract] [Full Text] [PDF] |
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S. A Harrison and C. P. Day Benefits of lifestyle modification in NAFLD Gut, December 1, 2007; 56(12): 1760 - 1769. [Full Text] [PDF] |
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D. M. Thomson, J. D. Brown, N. Fillmore, B. M. Condon, H-J. Kim, J. R. Barrow, and W. W. Winder LKB1 and the regulation of malonyl-CoA and fatty acid oxidation in muscle Am J Physiol Endocrinol Metab, December 1, 2007; 293(6): E1572 - E1579. [Abstract] [Full Text] [PDF] |
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M. Kodiha, J. G. Rassi, C. M. Brown, and U. Stochaj Localization of AMP kinase is regulated by stress, cell density, and signaling through the MEK->ERK1/2 pathway Am J Physiol Cell Physiol, November 1, 2007; 293(5): C1427 - C1436. [Abstract] [Full Text] [PDF] |
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Q. F. Collins, H.-Y. Liu, J. Pi, Z. Liu, M. J. Quon, and W. Cao Epigallocatechin-3-gallate (EGCG), A Green Tea Polyphenol, Suppresses Hepatic Gluconeogenesis through 5'-AMP-activated Protein Kinase J. Biol. Chem., October 12, 2007; 282(41): 30143 - 30149. [Abstract] [Full Text] [PDF] |
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L. Li, M. Naples, H. Song, R. Yuan, F. Ye, S. Shafi, K. Adeli, and D. S. Ng LCAT-null mice develop improved hepatic insulin sensitivity through altered regulation of transcription factors and suppressors of cytokine signaling Am J Physiol Endocrinol Metab, August 1, 2007; 293(2): E587 - E594. [Abstract] [Full Text] [PDF] |
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