SIRT1 mediates central circadian control in the SCN by a mechanism that decays with aging.
SIRT1 mediates central circadian control in the SCN by a mechanism that decays with aging.
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DOI:
10.1016/j.cell.2013.05.027
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发表时间:
2013-06-20
期刊:
影响因子:
64.5
通讯作者:
Guarente L
中科院分区:
文献类型:
--
作者:
Chang HC;Guarente L
SIRT1 is a NAD+-dependent protein deacetylase that governs many physiological pathways, including circadian rhythm in peripheral tissues. Here we show that SIRT1 in the brain governs central circadian control by activating transcription of the two major circadian regulators, BMAL1 and CLOCK. This activation itself comprises an amplifying circadian loop involving SIRT1, PGC-1α and Nampt. In aged wild type mice, SIRT1 levels in the suprachiasmatic nucleus are decreased, as are levels of BMAL1 and PER2, giving rise to a longer intrinsic period, a more disrupted activity pattern, and an inability to adapt to changes in the light entrainment schedule. Young mice lacking brain SIRT1 pheno-copy these aging-dependent circadian changes, while mice that over-express SIRT1 in brain are protected from the effects of aging. Our findings indicate that SIRT1 activates the central pacemaker to maintain robust circadian control in young animals, and a decay in this activity may play an important role in aging.
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影响因子:
10.5
作者:
Cohen, Dena E.;Supinski, Andrea M.;Guarente, Leonard P.
通讯作者:
Guarente, Leonard P.
影响因子:
10.5
作者:
Kondratov, Roman V.;Kondratova, Anna A.;Antoch, Marina P.
通讯作者:
Antoch, Marina P.
影响因子:
64.5
作者:
Libert S;Pointer K;Bell EL;Das A;Cohen DE;Asara JM;Kapur K;Bergmann S;Preisig M;Otowa T;Kendler KS;Chen X;Hettema JM;van den Oord EJ;Rubio JP;Guarente L
通讯作者:
Guarente L
DOI:
10.1126/science.1195027
发表时间:
2010-12-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Bass J;Takahashi JS
通讯作者:
Takahashi JS
影响因子:
82.9
作者:
Jiang M;Wang J;Fu J;Du L;Jeong H;West T;Xiang L;Peng Q;Hou Z;Cai H;Seredenina T;Arbez N;Zhu S;Sommers K;Qian J;Zhang J;Mori S;Yang XW;Tamashiro KL;Aja S;Moran TH;Luthi-Carter R;Martin B;Maudsley S;Mattson MP;Cichewicz RH;Ross CA;Holtzman DM;Krainc D;Duan W
通讯作者:
Duan W