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.
复制标题

DOI:
10.1016/j.cell.2013.05.027
复制
发表时间:
2013-06-20
期刊:
影响因子:
64.5
通讯作者:
Guarente L
Guarente L
中科院分区:
生物学1区
文献类型:
--
作者:
Chang HC;Guarente L

文献摘要

参考文献

被引文献

相似文献

SIRT1 是一种 NAD+ 依赖性蛋白脱乙酰酶,控制着许多生理途径,包括外周组织的昼夜节律。在这里,我们表明大脑中的 SIRT1 通过激活两个主要昼夜节律调节因子 BMAL1 和 CLOCK 的转录来控制中枢昼夜节律。这种激活本身包含一个涉及 SIRT1、PGC-1α 和 Nampt 的放大昼夜节律环。在老年野生型小鼠中,视交叉上核中的 SIRT1 水平下降,BMAL1 和 PER2 水平也下降,导致固有周期更长、活动模式更加混乱,并且无法适应光夹带时间表的变化。大脑中缺乏 SIRT1 的年轻小鼠会复制这些与衰老相关的昼夜节律变化,而大脑中过度表达 SIRT1 的小鼠则可以免受衰老的影响。我们的研究结果表明,SIRT1 激活中央起搏器以维持幼年动物强大的昼夜节律控制,并且这种活动的衰退可能在衰老过程中发挥重要作用。
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.
DOI: 10.1101/gad.1839209
发表时间: 2009-12-15
影响因子: 10.5
作者:
Cohen, Dena E.;Supinski, Andrea M.;Guarente, Leonard P.
通讯作者: Guarente, Leonard P.
DOI: 10.1101/gad.1432206
发表时间: 2006-07-15
影响因子: 10.5
作者:
Kondratov, Roman V.;Kondratova, Anna A.;Antoch, Marina P.
通讯作者: Antoch, Marina P.
DOI: 10.1016/j.cell.2011.10.054
发表时间: 2011-12-23
期刊: Cell
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
昼夜节律的代谢和能量学的融合。
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
DOI: 10.1038/nm.2558
发表时间: 2011-12-18
期刊: Nature medicine
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