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Linking Depression to Epigenetics: Role of the Circadian Clock

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Circadian Clock in Brain Health and Disease

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 1344))

Abstract

The circadian clock governs multiple biological functions at the molecular level and plays an essential role in providing temporal diversity of behavior and physiology including neuronal activity. Studies spanning the past two decades have deciphered the molecular mechanisms of the circadian clock, which appears to operate as an essential interface in linking cellular metabolism to epigenetic control. Accumulating evidence illustrates that disruption of circadian rhythms through jet lag, shift work, and temporary irregular life-style could lead to depression-like symptoms. Remarkably, abnormal neuronal activity and depression-like behavior appear in animals lacking elements of the molecular clock. Recent studies demonstrate that neuronal and synaptic gene induction is under epigenetic control, and robust epigenetic remodeling is observed under depression and related psychiatric disorders. Thus, the intertwined links between the circadian clock and epigenetics may point to novel approaches for antidepressant treatments, epigenetic therapy, and chronotherapy. In this chapter we summarize how the circadian clock is involved in neuronal functions and depressive-like behavior and propose that potential strategies for antidepressant therapy by incorporating circadian genomic and epigenetic rewiring of neuronal signaling pathways.

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Acknowledgments

We are grieved by the unexpected loss of Prof. Paolo Sassone-Corsi. It has been an honor and pleasure to have had the opportunity to work with him on this book chapter. We thank all the members of the Sassone-Corsi lab for useful discussions and support. S.S. is supported by the Brain & Behavioral Research Foundation (NARSAD Young Investigator Grant 28681).

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Correspondence to Shogo Sato .

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Sato, S., Sassone-Corsi, P. (2021). Linking Depression to Epigenetics: Role of the Circadian Clock. In: Engmann, O., Brancaccio, M. (eds) Circadian Clock in Brain Health and Disease. Advances in Experimental Medicine and Biology, vol 1344. Springer, Cham. https://doi.org/10.1007/978-3-030-81147-1_3

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