Inducible cell-to-cell signaling for tunable dynamics in microbial communities

Arianna Miano, Michael J. Liao and Jeff Hasty ()
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Arianna Miano: University of California San Diego
Michael J. Liao: University of California San Diego
Jeff Hasty: University of California San Diego

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract The last decade has seen bacteria at the forefront of biotechnological innovation, with applications including biomolecular computing, living therapeutics, microbiome engineering and microbial factories. These emerging applications are all united by the need to precisely control complex microbial dynamics in spatially extended environments, requiring tools that can bridge the gap between intracellular and population-level coordination. To address this need, we engineer an inducible quorum sensing system which enables precise tunability of bacterial dynamics both at the population and community level. As a proof-of-principle, we demonstrate the advantages of this system when genetically equipped for cargo delivery. In addition, we exploit the absence of cross-talk with respect to the majority of well-characterized quorum sensing systems to demonstrate inducibility of multi-strain communities. More broadly, this work highlights the unexplored potential of remotely inducible quorum sensing systems which, coupled to any gene of interest, may facilitate the translation of circuit designs into applications.

Date: 2020
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DOI: 10.1038/s41467-020-15056-8

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