Journal
NATURE REVIEWS GENETICS
Volume 20, Issue 9, Pages 536-548Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41576-019-0130-6
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Funding
- European Molecular Biology Laboratory (EMBL) International PhD Programme
- Wellcome Trust [105045/Z/14/Z]
- Cancer Research UK [17197]
- EMBL
- Wellcome Trust [105045/Z/14/Z] Funding Source: Wellcome Trust
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Biochemical reactions are intrinsically stochastic, leading to variation in the production of mRNAs and proteins within cells. In the scientific literature, this source of variation is typically referred to as 'noise'. The observed variability in molecular phenotypes arises from a combination of processes that amplify and attenuate noise. Our ability to quantify cell-to-cell variability in numerous biological contexts has been revolutionized by recent advances in single-cell technology, from imaging approaches through to 'omics' strategies. However, defining, accurately measuring and disentangling the stochastic and deterministic components of cell-to-cell variability is challenging. In this Review, we discuss the sources, impact and function of molecular phenotypic variability and highlight future directions to understand its role.
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