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The Use of Chemostats in Microbial Systems Biology
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Steady-State Cell-Free Gene Expression with Microfluidic Chemostats.

Nadanai Laohakunakorn1, Barbora Lavickova2, Zoe Swank2

  • 1School of Biological Sciences, Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh, UK.

Methods in Molecular Biology (Clifton, N.J.)
|January 6, 2021
PubMed
Summary

This study presents a microfluidic chemostat for cell-free synthetic biology, enabling dynamic gene circuit testing outside living cells. The protocol details fabrication for in vitro research.

Keywords:
Cell-freeMicrofluidicsSteady-state gene expressionSynthetic biology

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Area of Science:

  • Synthetic biology
  • Biotechnology
  • Microfluidics

Background:

  • Cell-free synthetic biology simplifies gene circuit construction and testing.
  • Microfluidic devices enable dynamic, nonequilibrium conditions for in vitro biological systems.

Purpose of the Study:

  • To provide a detailed protocol for fabricating a microfluidic chemostat device.
  • To enable the operation of cell-free reactions under steady-state, nonequilibrium conditions.
  • To facilitate the implementation of dynamic gene regulatory circuits in vitro.

Main Methods:

  • Photolithography for device patterning.
  • Soft lithography for device fabrication.
  • Hardware setup for microfluidic system integration.

Main Results:

  • A functional microfluidic chemostat device was successfully fabricated.
  • The device supports cell-free reactions under dynamic, steady-state conditions.
  • The protocol details essential fabrication and setup steps.

Conclusions:

  • The developed microfluidic chemostat is a valuable tool for in vitro dynamic gene circuit research.
  • This fabrication protocol enables researchers to build devices for advanced cell-free synthetic biology applications.
  • The system facilitates the study of complex biological systems in a controlled, simplified environment.