Sleep deprivation impairs cAMP signalling in the hippocampus

Vecsey, C. G. et al. (2009) Sleep deprivation impairs cAMP signalling in the hippocampus. Nature, 461(7267), pp. 1122-1125. (doi:10.1038/nature08488)

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Millions of people regularly obtain insufficient sleep1. Given the effect of sleep deprivation on our lives, understanding the cellular and molecular pathways affected by sleep deprivation is clearly of social and clinical importance. One of the major effects of sleep deprivation on the brain is to produce memory deficits in learning models that are dependent on the hippocampus2, 3, 4, 5. Here we have identified a molecular mechanism by which brief sleep deprivation alters hippocampal function. Sleep deprivation selectively impaired 3', 5'-cyclic AMP (cAMP)- and protein kinase A (PKA)-dependent forms of synaptic plasticity6 in the mouse hippocampus, reduced cAMP signalling, and increased activity and protein levels of phosphodiesterase 4 (PDE4), an enzyme that degrades cAMP. Treatment of mice with phosphodiesterase inhibitors rescued the sleep-deprivation-induced deficits in cAMP signalling, synaptic plasticity and hippocampus-dependent memory. These findings demonstrate that brief sleep deprivation disrupts hippocampal function by interfering with cAMP signalling through increased PDE4 activity. Thus, drugs that enhance cAMP signalling may provide a new therapeutic approach to counteract the cognitive effects of sleep deprivation.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Houslay, Professor Miles and Baillie, Professor George
Authors: Vecsey, C. G., Baillie, G. S., Jaganath, D., Havekes, R., Daniels, A., Wimmer, M., Huang, T., Brown, K. M., Li, X.-Y., Descalzi, G., Kim, S. S., Chen, T., Shang, Y.-Z., Zhuo, M., Houslay, M. D., and Abel, T.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology
College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
Journal Name:Nature
Publisher:Nature Publishing Group
ISSN (Online):1476-4687
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
438301Phosphodiesterase-4 isoforms - intracellular targeting, regulation and potential therapeutic targetsMiles HouslayMedical Research Council (MRC)G0600765Institute of Neuroscience and Psychology
421571thera-cAMP: identification of therapeutic molecules to target compartmentalised cAMP signalling networks in human diseaseMiles HouslayEuropean Commission (EC)UNSPECIFIEDInstitute of Neuroscience and Psychology
432501Transatlantic networks of excellence in cardiovascular diseaseMiles HouslayFoundation Leducq (LEDUCQ-VIL)06 CVD 02Institute of Neuroscience and Psychology