Sirtuins and the circadian clock: bridging chromatin and metabolism

doi:10.1126/scisignal.2005685

Review

. 2014 Sep 9;7(342):re6.

doi: 10.1126/scisignal.2005685.

Sirtuins and the circadian clock: bridging chromatin and metabolism

Selma Masri¹, Paolo Sassone-Corsi²

Affiliations

¹ Center for Epigenetics and Metabolism, Department of Biological Chemistry, U904 INSERM, University of California, Irvine, Irvine, CA 92697, USA.
² Center for Epigenetics and Metabolism, Department of Biological Chemistry, U904 INSERM, University of California, Irvine, Irvine, CA 92697, USA. psc@uci.edu.

PMID: 25205852
DOI: 10.1126/scisignal.2005685

Review

Sirtuins and the circadian clock: bridging chromatin and metabolism

Selma Masri et al. Sci Signal. 2014.

. 2014 Sep 9;7(342):re6.

doi: 10.1126/scisignal.2005685.

Authors

Selma Masri¹, Paolo Sassone-Corsi²

Affiliations

¹ Center for Epigenetics and Metabolism, Department of Biological Chemistry, U904 INSERM, University of California, Irvine, Irvine, CA 92697, USA.
² Center for Epigenetics and Metabolism, Department of Biological Chemistry, U904 INSERM, University of California, Irvine, Irvine, CA 92697, USA. psc@uci.edu.

PMID: 25205852
DOI: 10.1126/scisignal.2005685

Abstract

The circadian clock is a finely tuned system of transcriptional and translational regulation that is required for daily synchrony of organismal physiological processes. Additional layers of complexity that contribute to efficient clock function involve posttranslational modifications and enzymatic feedback loops. SIRT1, the founding member of the sirtuin family of protein deacetylases, was the first sirtuin to be reported to modulate circadian function. SIRT1 affects the circadian clock by its actions in the nucleus. Moreover, recent data implicate SIRT3 and SIRT6 in controlling mitochondrial and nuclear circadian functions, revealing previously unappreciated roles that extend to various subcellular domains, including fatty acid metabolism in the mitochondria. This review focuses on the roles of sirtuins in directing circadian functions in diverse organelles and speculates on the endogenous signals that may mediate the segregated roles of this family of enzymes.

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Sirtuins and the circadian clock: bridging chromatin and metabolism

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Sirtuins and the circadian clock: bridging chromatin and metabolism

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