The molecular clockwork of mammalian cells.

The molecular clockwork of mammalian cells.
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DOI:
10.1016/j.semcdb.2021.03.012
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发表时间:
2022-06
影响因子:
7.3
通讯作者:
Buhr ED
Buhr ED
中科院分区:
生物学2区
文献类型:
--
作者:
Yi JS;Díaz NM;D'Souza S;Buhr ED

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大多数生物体都含有自我维持的生物钟。这些时钟可以通过环境刺激来同步,但也可以单独无限地振荡。在哺乳动物中,对于已检查的大多数细胞类型来说,在分子水平上都是如此。一组核心“时钟基因”形成转录/翻译反馈环路 (TTFL),其重复周期约为 24 小时。 TTFL 的确切机制在不同细胞类型中略有不同,但都涉及时钟基因核心群的相似家族成员。时钟有许多输出,对于不同的组织来说是唯一的。不同组织中的细胞会将 TTFL 提供的定时信号转换为许多时钟控制基因和细胞过程的独特编排的转录振荡。
Most organisms contain self-sustained circadian clocks. These clocks can be synchronized by environmental stimuli, but can also oscillate indefinitely in isolation. In mammals this is true at the molecular level for the majority of cell types that have been examined. A core set of “clock genes” form a transcriptional/translational feedback loop (TTFL) which repeats with a period of approximately 24 hours. The exact mechanism of the TTFL differs slightly in various cell types, but all involve similar family members of the core cohort of clock genes. The clock has many outputs which are unique for different tissues. Cells in diverse tissues will convert the timing signals provided by the TTFL into uniquely orchestrated transcriptional oscillations of many clock-controlled genes and cellular processes.
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