Quality control in the initiation of eukaryotic DNA replication.

Quality control in the initiation of eukaryotic DNA replication.
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DOI:
10.1098/rstb.2011.0073
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发表时间:
2011-12-27
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
通讯作者:
Diffley JF
Diffley JF
中科院分区:
其他
文献类型:
--
作者:
Diffley JF

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DNA复制的起源必须受到控制,以确保整个基因组在每个细胞周期中精确复制一次。在人类细胞中,这需要在每个细胞周期中恰好激活数万个复制起点一次。如果做不到这一点,可能会导致细胞死亡或基因组重排,如与癌症相关的那些。确保有效启动复制的系统,同时也为重新启动提供了一个强大的块,在基因组稳定性中发挥着至关重要的作用。在这篇综述中,我将讨论细胞使用的一些策略,以确保每个细胞周期复制一次,并提供一个量化框架,以评估参与这一调控的各个途径的相对重要性和效率。
Origins of DNA replication must be regulated to ensure that the entire genome is replicated precisely once in each cell cycle. In human cells, this requires that tens of thousands of replication origins are activated exactly once per cell cycle. Failure to do so can lead to cell death or genome rearrangements such as those associated with cancer. Systems ensuring efficient initiation of replication, while also providing a robust block to re-initiation, play a crucial role in genome stability. In this review, I will discuss some of the strategies used by cells to ensure once per cell cycle replication and provide a quantitative framework to evaluate the relative importance and efficiency of individual pathways involved in this regulation.
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