Abstract:
:Genetic noise together with genome duplication and volume changes during cell cycle are significant contributors to cell-to-cell heterogeneity. How can cells buffer the effects of these unavoidable epigenetic and genetic variations on phenotypes that are sensitive to such variations? Here we show that a simple network motif that is essential for network-dosage compensation can reduce the effects of extrinsic noise on the network output. Using natural and synthetic gene networks with and without the network motif, we measure gene network activity in single yeast cells and find that the activity of the compensated network is significantly lower in noise compared with the non-compensated network. A mathematical analysis provides intuitive insights into these results and a novel stochastic model tracking cell-volume and cell-cycle predicts the experimental results. Our work implies that noise is a selectable trait tunable by evolution.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Peng W,Song R,Acar Mdoi
10.1038/ncomms12959subject
Has Abstractpub_date
2016-10-03 00:00:00pages
12959issn
2041-1723pii
ncomms12959journal_volume
7pub_type
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