Period doubling induced by thermal noise amplification in genetic circuits
KAUST DepartmentPRIMALIGHT Research Group
Electrical Engineering Program
Applied Mathematics and Computational Science Program
Permanent link to this recordhttp://hdl.handle.net/10754/337009
MetadataShow full item record
AbstractRhythms of life are dictated by oscillations, which take place in a wide rage of biological scales. In bacteria, for example, oscillations have been proven to control many fundamental processes, ranging from gene expression to cell divisions. In genetic circuits, oscillations originate from elemental block such as autorepressors and toggle switches, which produce robust and noise-free cycles with well defined frequency. In some circumstances, the oscillation period of biological functions may double, thus generating bistable behaviors whose ultimate origin is at the basis of intense investigations. Motivated by brain studies, we here study an “elemental” genetic circuit, where a simple nonlinear process interacts with a noisy environment. In the proposed system, nonlinearity naturally arises from the mechanism of cooperative stability, which regulates the concentration of a protein produced during a transcription process. In this elemental model, bistability results from the coherent amplification of environmental fluctuations due to a stochastic resonance of nonlinear origin. This suggests that the period doubling observed in many biological functions might result from the intrinsic interplay between nonlinearity and thermal noise.
CitationPeriod doubling induced by thermal noise amplification in genetic circuits 2014, 4:7088 Scientific Reports
SponsorsA. Fratalocchi acknowledges funding from KAUST (Award No. CRG-1-2012- FRA-005). For parallel computing, this research used the resources of the Primalight group at KAUST University.
PublisherNature Publishing Group
The following license files are associated with this item:
- On the attenuation and amplification of molecular noise in genetic regulatory networks.
- Authors: Chen BS, Wang YC
- Issue date: 2006 Feb 2
- Dynamics and evolution of stochastic bistable gene networks with sensing in fluctuating environments.
- Authors: Ribeiro AS
- Issue date: 2008 Dec
- Robust design of biological circuits: evolutionary systems biology approach.
- Authors: Chen BS, Hsu CY, Liou JJ
- Issue date: 2011
- Build to understand: synthetic approaches to biology.
- Authors: Wang LZ, Wu F, Flores K, Lai YC, Wang X
- Issue date: 2016 Apr 18
- Effects of coupling strength and space on the dynamics of coupled toggle switches in stochastic gene networks with multiple-delayed reactions.
- Authors: Ribeiro AS
- Issue date: 2007 Jun