Abstract:
:Synthetic genetic circuits allow us to modify the behavior of living cells. However, changes in environmental conditions and unforeseen interactions with the host cell can cause deviations from a desired function, resulting in the need for time-consuming reassembly to fix these issues. Here, we use a regulatory motif that controls transcription and translation to create genetic devices whose response functions can be dynamically tuned. This allows us, after construction, to shift the on and off states of a sensor by 4.5- and 28-fold, respectively, and modify genetic NOT and NOR logic gates to allow their transitions between states to be varied over a >6-fold range. In all cases, tuning leads to trade-offs in the fold-change and the ability to distinguish cellular states. This work lays the foundation for adaptive genetic circuits that can be tuned after their physical assembly to maintain functionality across diverse environments and design contexts.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Bartoli V,Meaker GA,di Bernardo M,Gorochowski TEdoi
10.1038/s41467-020-15653-7subject
Has Abstractpub_date
2020-04-29 00:00:00pages
2095issue
1issn
2041-1723pii
10.1038/s41467-020-15653-7journal_volume
11pub_type
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