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Related Experiment Video

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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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Published on: March 13, 2017

A modular cell-based biosensor using engineered genetic logic circuits to detect and integrate multiple environmental

Baojun Wang1, Mauricio Barahona, Martin Buck

  • 1Department of Mathematics, 6M50 Huxley Building, Imperial College London, London, SW7 2AZ, UK. b.wang06@imperial.ac.uk

Biosensors & Bioelectronics
|September 18, 2012
PubMed
Summary
This summary is machine-generated.

Scientists engineered modular synthetic microbe biosensors using genetic AND logic gates to detect multiple environmental signals. These scalable biosensors offer enhanced selectivity and sensitivity for environmental and healthcare applications.

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Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array
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Area of Science:

  • Synthetic Biology
  • Genetic Engineering
  • Environmental Monitoring

Background:

  • Cells process diverse signals combinatorially for specific responses.
  • Engineered modular cell signaling circuits can act as signal processing units.

Purpose of the Study:

  • To construct scalable synthetic microbe-based biosensors using modular genetic AND logic gates.
  • To demonstrate the predictable engineering of biosensors for sensing and integrating multiple environmental signals.

Main Methods:

  • Utilized engineered modular genetic AND logic gates with exchangeable sensory, signal processing, and actuation modules.
  • Developed Escherichia coli consortium-based biosensors to detect and integrate arsenic, mercury, and copper ion levels.
  • Employed native and synthetic signaling pathways combined with cell-cell communication modules.

Main Results:

  • Successfully constructed a set of scalable synthetic microbe-based biosensors with quantitative fluorescent output.
  • Demonstrated the genetic logic gate's function as a biological filter and amplifier, enhancing sensing selectivity and sensitivity.
  • Engineered a consortium-based biosensor capable of detecting and integrating three distinct environmental chemical signals.

Conclusions:

  • Modular cell-based biosensors can be predictably engineered using exchangeable synthetic gene circuit modules.
  • This approach enables the sensing and integration of multiple-input signals for diverse applications.
  • The study provides key design principles for future environmental and healthcare biosensor applications.