Imperial College London
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DrFrancescaCeroni

Faculty of Engineering, Department of Chemical Engineering

Senior Lecturer
 
 
 
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Contact

 

f.ceroni

 
 
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Location

 

510AACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@unpublished{Ceroni:2017:10.1101/177030,
author = {Ceroni, F and Furini, S and Gorochowski, T and Boo, A and Borkowski, O and Ladak, Y and Awan, A and Gilbert, C and Stan, G-B and Ellis, T},
doi = {10.1101/177030},
publisher = {Cold Spring Harbor Laboratory},
title = {Burden-driven feedback control of gene expression},
url = {http://dx.doi.org/10.1101/177030},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - UNPB
AB  - Cells use feedback regulation to ensure robust growth despite fluctuating demands for resources and differing environmental conditions. However, the expression of foreign proteins from engineered constructs is an unnatural burden that cells are not adapted for. Here we combined RNA-seq with an in vivo assay to identify the major transcriptional changes that occur in Escherichia coli when inducible synthetic constructs are expressed. We observed that native promoters related to the heat-shock response activated expression rapidly in response to synthetic expression, regardless of the construct. Using these promoters, we built a dCas9-based feedback-regulation system that automatically adjusts the expression of a synthetic construct in response to burden. Cells equipped with this general-use controller maintained their capacity for native gene expression to ensure robust growth and thus outperformed unregulated cells in terms of protein yield in batch production. This engineered feedback is to our knowledge the first example of a universal, burden-based biomolecular control system and is modular, tunable and portable.
AU  - Ceroni,F
AU  - Furini,S
AU  - Gorochowski,T
AU  - Boo,A
AU  - Borkowski,O
AU  - Ladak,Y
AU  - Awan,A
AU  - Gilbert,C
AU  - Stan,G-B
AU  - Ellis,T
DO  - 10.1101/177030
PB  - Cold Spring Harbor Laboratory
PY  - 2017///
TI  - Burden-driven feedback control of gene expression
UR  - http://dx.doi.org/10.1101/177030
UR  - http://hdl.handle.net/10044/1/62275
ER  -
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