Title : Circadian clock feedback cycle through NAMPT-mediated NAD+ biosynthesis.

Pub. Date : 2009 May 1

PMID : 19299583






4 Functional Relationships(s)
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1 Circadian clock feedback cycle through NAMPT-mediated NAD+ biosynthesis. NAD clock circadian regulator Homo sapiens
2 Here we report that both the rate-limiting enzyme in mammalian nicotinamide adenine dinucleotide (NAD+) biosynthesis, nicotinamide phosphoribosyltransferase (NAMPT), and levels of NAD+ display circadian oscillations that are regulated by the core clock machinery in mice. NAD clock circadian regulator Homo sapiens
3 Here we report that both the rate-limiting enzyme in mammalian nicotinamide adenine dinucleotide (NAD+) biosynthesis, nicotinamide phosphoribosyltransferase (NAMPT), and levels of NAD+ display circadian oscillations that are regulated by the core clock machinery in mice. NAD clock circadian regulator Homo sapiens
4 In turn, the circadian transcription factor CLOCK binds to and up-regulates Nampt, thus completing a feedback loop involving NAMPT/NAD+ and SIRT1/CLOCK:BMAL1. NAD clock circadian regulator Homo sapiens