1. Systems biology. Accurate information transmission through dynamic biochemical signaling networks.
- Author
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Selimkhanov J, Taylor B, Yao J, Pilko A, Albeck J, Hoffmann A, Tsimring L, and Wollman R
- Subjects
- Cell Line, Computer Simulation, Humans, Signal-To-Noise Ratio, Single-Cell Analysis, Systems Biology, Calcium Signaling, Extracellular Signal-Regulated MAP Kinases metabolism, MAP Kinase Signaling System, NF-kappa B metabolism, Signal Transduction
- Abstract
Stochasticity inherent to biochemical reactions (intrinsic noise) and variability in cellular states (extrinsic noise) degrade information transmitted through signaling networks. We analyzed the ability of temporal signal modulation--that is, dynamics--to reduce noise-induced information loss. In the extracellular signal-regulated kinase (ERK), calcium (Ca(2+)), and nuclear factor kappa-B (NF-κB) pathways, response dynamics resulted in significantly greater information transmission capacities compared to nondynamic responses. Theoretical analysis demonstrated that signaling dynamics has a key role in overcoming extrinsic noise. Experimental measurements of information transmission in the ERK network under varying signal-to-noise levels confirmed our predictions and showed that signaling dynamics mitigate, and can potentially eliminate, extrinsic noise-induced information loss. By curbing the information-degrading effects of cell-to-cell variability, dynamic responses substantially increase the accuracy of biochemical signaling networks., (Copyright © 2014, American Association for the Advancement of Science.)
- Published
- 2014
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