Cell-Free and In Vivo Characterization of Lux, Las, and Rpa Quorum Activation Systems in E. coli.

Autor: Halleran AD; Biology and Biological Engineering, California Institute of Technology , Pasadena, California 91125, United States., Murray RM; Biology and Biological Engineering, California Institute of Technology , Pasadena, California 91125, United States.; Control and Dynamical Systems, California Institute of Technology , Pasadena, California 91125, United States.
Jazyk: angličtina
Zdroj: ACS synthetic biology [ACS Synth Biol] 2018 Feb 16; Vol. 7 (2), pp. 752-755. Date of Electronic Publication: 2017 Nov 28.
DOI: 10.1021/acssynbio.7b00376
Abstrakt: Synthetic biologists have turned toward quorum systems as a path for building sophisticated microbial consortia that exhibit group decision making. Currently, however, even the most complex consortium circuits rely on only one or two quorum sensing systems, greatly restricting the available design space. High-throughput characterization of available quorum sensing systems is useful for finding compatible sets of systems that are suitable for a defined circuit architecture. Recently, cell-free systems have gained popularity as a test-bed for rapid prototyping of genetic circuitry. We take advantage of the transcription-translation cell-free system to characterize three commonly used Lux-type quorum activators, Lux, Las, and Rpa. We then compare the cell-free characterization to results obtained in vivo. We find significant genetic crosstalk in both the Las and Rpa systems and substantial signal crosstalk in Lux activation. We show that cell-free characterization predicts crosstalk observed in vivo.
Databáze: MEDLINE