The daily timing of gene expression and physiology in mammals

The daily timing of gene expression and physiology in mammals
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哺乳动物基因表达和生理学的每日时间

DOI:
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发表时间:
2007
影响因子:
8.3
通讯作者:
U. Schibler
U. Schibler
中科院分区:
医学2区
文献类型:
--
作者:
U. Schibler

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哺乳动物的行为和生理经历着由内源性昼夜节律系统协调的每日节律。这个系统有一个等级结构,因为一个主起搏器,位于下丘脑腹侧的视交叉上核,同步几乎所有身体细胞中的外周振荡器。虽然产生日常节律的基本分子机制在aIl细胞中是相似的,但大多数时钟输出是细胞特异性的。这一结论是基于几个组织的全基因组转录组分析研究,这些研究已经揭示了数百个节律性表达基因。各种器官中的循环基因表达支配着行为和生理的明显节律,包括睡眠-觉醒周期、代谢、外源解毒和细胞增殖。因此,这种时间组织的长期扰动可能导致发病率增加和寿命缩短。
Mammalian behavior and physiology undergo daily rhythms that are coordinated by an endogenous circadian timing system. This system has a hierarchical structure, in that a master pacemaker, residing in the suprachiasmatic nucleus of the ventral hypothalamus, synchronizes peripheral oscillators in virtually all body cells. While the basic molecular mechanisms generating the daily rhythms are similar in aIl cells, most clock out-puts are cell-specific. This conclusion is based on genomewide transcriptome profiling studies in several tissues that have revealed hundreds of rhythmically expressed genes. Cyclic gene expression in the various organs governs overt rhythms in behavior and physiology, encompassing sleep-wake cycles, metabolism, xenobiotic detoxification, and cellularproliferation. As a consequence, chronic perturbation of this temporal organization may lead to increased morbidity and reduced lifespan.
DOI: 10.1073/pnas.0409897102
发表时间: 2005-03-01
影响因子: 11.1
作者:
Gorbacheva, VY;Kondratov, RV;Antoch, MP
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