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Population regulation in microbial consortia using dual feedback control
Conference proceeding   Open access

Population regulation in microbial consortia using dual feedback control

Xinying Ren, Ania-Ariadna Baetica, Anandh Swaminathan and Richard M. Murray
2017 IEEE 56th Annual Conference on Decision and Control (CDC), v 2018, pp 5341-5347
Dec 2017
url
https://resolver.caltech.edu/CaltechAUTHORS:20170925-083417843View
Accepted (AM)Open Access (License Unspecified) Open

Abstract

Proteins Sensors Strain Computer Architecture Microprocessors Sociology Statistics
An ongoing area of study in synthetic biology has been the design and construction of synthetic circuits that maintain homeostasis at the population level. Here, we are interested in designing a synthetic control circuit that regulates the total cell population and the relative ratio between cell strains in a culture that contains two different cell strains. We have developed a dual feedback control strategy that uses two separate control loops to achieve the two control objectives respectively. We have implemented the strategy in a population regulation circuit where both the total population size and relative cell strain ratio can be set by reference signals. The circuit shows robustness and adaptation to perturbations in cell growth rate and changes in cell numbers. The control architecture is general and could apply to any organism for which synthetic biology tools for quorum sensing, comparison between outputs, and growth control are available.

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Automation & Control Systems
Engineering, Electrical & Electronic
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