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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2016 ; 7
(ä): 12546
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Automated optogenetic feedback control for precise and robust regulation of gene
expression and cell growth
#MMPMID27562138
Milias-Argeitis A
; Rullan M
; Aoki SK
; Buchmann P
; Khammash M
Nat Commun
2016[Aug]; 7
(ä): 12546
PMID27562138
show ga
Dynamic control of gene expression can have far-reaching implications for
biotechnological applications and biological discovery. Thanks to the advantages
of light, optogenetics has emerged as an ideal technology for this task. Current
state-of-the-art methods for optical expression control fail to combine precision
with repeatability and cannot withstand changing operating culture conditions.
Here, we present a novel fully automatic experimental platform for the robust and
precise long-term optogenetic regulation of protein production in liquid
Escherichia coli cultures. Using a computer-controlled light-responsive
two-component system, we accurately track prescribed dynamic green fluorescent
protein expression profiles through the application of feedback control, and show
that the system adapts to global perturbations such as nutrient and temperature
changes. We demonstrate the efficacy and potential utility of our approach by
placing a key metabolic enzyme under optogenetic control, thus enabling dynamic
regulation of the culture growth rate with potential applications in bacterial
physiology studies and biotechnology.