Abstract
Intrinsic circadian clocks are present in all forms of photosensitive life, enabling daily anticipation of the light/dark cycle and separation of energy storage and utilization cycles on a 24-h timescale. The core mechanism underlying circadian rhythmicity involves a cell-autonomous transcription/translation feedback loop that in turn drives rhythmic organismal physiology. In mammals, genetic studies have established that the core clock plays an essential role in maintaining metabolic health through actions within both brain pacemaker neurons and peripheral tissues and that disruption of the clock contributes to disease. Peripheral clocks, in turn, can be entrained by metabolic cues. In this review, we focus on the role of the nucleotide NAD(P)(H) and NAD+-dependent sirtuin deacetylases as integrators of circadian and metabolic cycles, as well as the implications for this interrelationship in healthful aging.
Original language | English (US) |
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Pages (from-to) | 15-26 |
Number of pages | 12 |
Journal | Seminars in Cell and Developmental Biology |
Volume | 126 |
DOIs | |
State | Published - Jun 2022 |
Funding
Research support was from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) grants R01DK090625 , R01DK100814 , and 1R01DK113011-01A1 , the Chicago Biomedical Consortium S-007, and the National Institute on Aging (NIA) grant P01AG011412 (to J.B.).
Keywords
- Aging
- Circadian clock
- Metabolism
- Nicotinamide adenine dinucleotide (NAD)
- Sirtuins
ASJC Scopus subject areas
- Cell Biology
- Developmental Biology