Using gene expression noise to understand gene regulation.

Using gene expression noise to understand gene regulation.
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DOI:
10.1126/science.1216379
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发表时间:
2012-04-13
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
van Oudenaarden A
van Oudenaarden A
中科院分区:
其他
文献类型:
--
作者:
Munsky B;Neuert G;van Oudenaarden A

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表型变异在生物学中是普遍存在的,通常可以追溯到潜在的遗传和环境变异。然而,即使是基因相同的细胞在相同的环境中也表现出不同的表型。随机基因表达,或基因表达“噪音”,被认为是这种变异的主要来源,其生理后果在过去十年中一直是激烈研究的主题。最近的几项研究测量了蛋白质和mRNA水平的可变性,并发现噪音和基因调节机制之间存在很强的联系。当与离散随机模型相结合时,细胞间可变性的测量提供了一个敏感的“指纹”,用于探索基因调控的基本问题。在这篇综述中,我们重点介绍了几项利用基因表达变异性来定量理解基因调控机制和动力学的研究。
Phenotypic variation is ubiquitous in biology and is often traceable to underlying genetic and environmental variation. However, even genetically identical cells in identical environments display variable phenotypes. Stochastic gene expression, or gene expression ‘noise’, has been suggested as a major source of this variability, and its physiological consequences have been topics of intense research for the last decade. Several recent studies have measured variability in protein and mRNA levels, and have discovered strong connections between noise and gene regulation mechanisms. When integrated with discrete stochastic models, measurements of cell-to-cell variability provide a sensitive ‘fingerprint’ with which to explore fundamental questions on gene regulation. In this review, we highlight several studies that used gene expression variability to develop a quantitative understanding of the mechanisms and dynamics of gene regulation.
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