Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.


Sci. Signal., 15 March 2011
Vol. 4, Issue 164, p. ec80
[DOI: 10.1126/scisignal.4164ec80]

EDITORS' CHOICE

Circadian Rhythms Metabolic Lags

L. Bryan Ray

Science, Science Signaling, AAAS, Washington, DC 20005, USA

Jet travel and working the night shift uncouple patterns of eating and activity from the body’s internal circadian clock. Recent evidence indicates that such disruption of circadian rhythms has deleterious consequences for metabolic control and can increase the occurrence of diseases like obesity or diabetes. Feng et al. (see the Perspective by Moore) provide insight into the molecular mechanisms that couple circadian rhythms to metabolic control in the liver. The authors found that histone deacetylase 3 (HDAC3) bound to more than 14,000 genes throughout the genome during the day when mice were inactive but to only about 100 genes during the night when the animals were active and feeding. Genes with products that function in liver metabolism tended to bind HDAC3, and the presence of HDAC3 was associated with histone deacetylation and decreased transcription. Thus, failure to coordinate expression of such genes with feeding and activity may contribute to the observed effects of circadian disruption on metabolism.

D. Feng, T. Liu, Z. Sun, A. Bugge, S. E. Mullican, T. Alenghat, X. S. Liu, M. A. Lazar, A circadian rhythm orchestrated by histone deacetylase 3 controls hepatic lipid metabolism. Science 331, 1315–1319 (2011). [Abstract] [Full Text]

D. D. Moore, Crise de foie, redux? Science 331, 1275–1276 (2011). [Abstract] [Full Text]

Citation: L. B. Ray, Metabolic Lags. Sci. Signal. 4, ec80 (2011).



To Advertise     Find Products


Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882