Circadian clock feedback cycle through NAMPT-mediated NAD+ biosynthesis.
Circadian clock feedback cycle through NAMPT-mediated NAD+ biosynthesis.
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DOI:
10.1126/science.1171641
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发表时间:
2009-05-01
期刊:
影响因子:
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通讯作者:
Bass J
中科院分区:
文献类型:
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作者:
Ramsey KM;Yoshino J;Brace CS;Abrassart D;Kobayashi Y;Marcheva B;Hong HK;Chong JL;Buhr ED;Lee C;Takahashi JS;Imai S;Bass J
The circadian clock is encoded by a transcription-translation feedback loop that synchronizes behavior and metabolism with the light-dark cycle. Here we report that both the rate-limiting enzyme in mammalian NAD+ biosynthesis, nicotinamide phosphoribosyltransferase (NAMPT), and levels of NAD+, display circadian oscillations which are regulated by the core clock machinery in mice. Inhibition of NAMPT promotes oscillation of the clock gene Per2 by releasing CLOCK:BMAL1 from suppression by SIRT1. 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.
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影响因子:
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作者:
Barnea, Maayan;Madar, Zecharia;Froy, Oren
通讯作者:
Froy, Oren
影响因子:
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作者:
Chen, Danica;Bruno, Joanne;Guarente, Leonard
通讯作者:
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作者:
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作者:
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DOI:
10.1038/nrg2430
发表时间:
2008-10
期刊:
Nature reviews. Genetics
影响因子:
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作者:
通讯作者:
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