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Investigating and Modeling the Factors That Affect Genetic Circuit Performance
Shai Zilberzwige-Tal1, Pedro Fontanarrosa2, Darya Bychenko1
1The Shmunis School of Biomedicine and Cancer Research, Life Sciences Faculty, Tel Aviv University, Tel Aviv-Yafo 6997801, Israel.
ACS Synthetic Biology
|November 2, 2023
Summary
Synthetic biology genetic circuits perform poorly outside the lab. Broader testing under varied conditions revealed significant performance changes, improving future application design.
Area of Science:
- Synthetic Biology
- Genetic Engineering
- Systems Biology
Background:
- Synthetic biology has advanced genetic circuits for complex functions.
- Genetic circuits often fail in real-world, non-lab environments.
Purpose of the Study:
- To propose and validate an expanded testing phase in the synthetic biology workflow.
- To assess genetic circuit performance under diverse environmental conditions.
Main Methods:
- Designed and evaluated a genetic circuit under varying temperatures, inducer concentrations, and soil exposure.
- Tested circuits across different bacterial growth stages.
- Generated model predictions for untested conditions.
Main Results:
- Circuit performance was significantly altered by non-optimal lab conditions.
- Observed changes in signal detection time and intensity.
- Found a negative correlation between gate activation time and bacterial growth phases.
Conclusions:
- Broader testing is crucial for understanding genetic circuit behavior outside the lab.
- Characterizing circuits under various conditions provides essential insights for safe applications.
- Expanded test and learn steps are vital for transitioning synthetic biology from concept to implementation.
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