A microfluidic optimal experimental design platform for forward design of cell-free genetic networks

Bob Sluijs, Roel J. M. Maas, Ardjan J. Linden, Tom F. A. Greef and Wilhelm T. S. Huck ()
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Bob Sluijs: Radboud University
Roel J. M. Maas: Radboud University
Ardjan J. Linden: Eindhoven University of Technology
Tom F. A. Greef: Radboud University
Wilhelm T. S. Huck: Radboud University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Cell-free protein synthesis has been widely used as a “breadboard” for design of synthetic genetic networks. However, due to a severe lack of modularity, forward engineering of genetic networks remains challenging. Here, we demonstrate how a combination of optimal experimental design and microfluidics allows us to devise dynamic cell-free gene expression experiments providing maximum information content for subsequent non-linear model identification. Importantly, we reveal that applying this methodology to a library of genetic circuits, that share common elements, further increases the information content of the data resulting in higher accuracy of model parameters. To show modularity of model parameters, we design a pulse decoder and bistable switch, and predict their behaviour both qualitatively and quantitatively. Finally, we update the parameter database and indicate that network topology affects parameter estimation accuracy. Utilizing our methodology provides us with more accurate model parameters, a necessity for forward engineering of complex genetic networks.

Date: 2022
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DOI: 10.1038/s41467-022-31306-3

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