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通过对偶反馈控制降低资源耦合多模块基因电路中的噪声

Noise Reduction in Resource-Coupled Multi-Module Gene Circuits through Antithetic Feedback Control.

作者信息

Chakravarty Suchana, Zhang Rong, Tian Xiao-Jun

机构信息

School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA.

出版信息

Proc IEEE Conf Decis Control. 2024 Dec;2024:5566-5571. doi: 10.1109/cdc56724.2024.10886586.

Abstract

Gene circuits within the same host cell often experience coupling, stemming from the competition for limited resources during transcriptional and translational processes. This resource competition introduces an additional layer of noise to gene expression. Here we present three multi-module antithetic control strategies: negatively competitive regulation (NCR) controller, alongside local and global controllers, aimed at reducing the gene expression noise within the context of resource competition. Through stochastic simulations and fluctuation-dissipation theorem (FDT) analysis, our findings highlight the superior performance of the NCR antithetic controller in reducing noise levels. Our research provides an effective control strategy for attenuating resource-driven noise and offers insight into the development of robust gene circuits.

摘要

同一宿主细胞内的基因回路常常会发生耦合,这源于转录和翻译过程中对有限资源的竞争。这种资源竞争给基因表达引入了额外的噪声层。在此,我们提出三种多模块反向控制策略:负竞争调节(NCR)控制器,以及局部和全局控制器,旨在在资源竞争的背景下降低基因表达噪声。通过随机模拟和涨落耗散定理(FDT)分析,我们的研究结果突出了NCR反向控制器在降低噪声水平方面的卓越性能。我们的研究为减弱资源驱动的噪声提供了一种有效的控制策略,并为稳健基因回路的开发提供了见解。

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