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Updated: Jun 2, 2025
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Plasmid Stability Analysis with Open-Source Droplet Microfluidics
Published on: December 27, 2024
384
Plasmid Stability Analysis with Open-Source Droplet Microfluidics
Pierre Padilla-Huamantinco1, Emerson Durán2, Tobias Wenzel3
1Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile.
Journal of Visualized Experiments : Jove
|January 13, 2025
Summary
This study presents a microfluidic method for analyzing plasmid retention in single cells without antibiotics. The open-hardware workflow enhances accessibility for high-throughput biological analyses.
Area of Science:
- Synthetic Biology
- Microfluidics
- Biotechnology
Background:
- Plasmids are crucial for gene expression in synthetic biology.
- Antibiotic selection for plasmid maintenance can be limiting.
- Developing antibiotic-free methods for plasmid retention analysis is essential.
Purpose of the Study:
- To develop an open-hardware microfluidic workflow for analyzing plasmid retention.
- To enable high-throughput, antibiotic-free assessment of plasmid stability.
- To provide a versatile platform for single-cell biological analysis.
Main Methods:
- Utilizing droplet microfluidics for single-cell culture in gel microdroplets.
- Employing fluorescence microscopy for quantifying microcolonies and plasmid retention.
- Integrating open-source hardware for precise flow and temperature control.
Main Results:
- Demonstrated parallel analysis of numerous single cells and microcolonies.
- Enabled differentiation of cells based on plasmid loss using fluorescent markers.
- Achieved enhanced statistical power compared to traditional methods.
Conclusions:
- The developed microfluidic workflow offers a robust, accessible, and high-throughput method for analyzing plasmid retention.
- Open-source hardware implementation increases the accessibility of advanced bioanalytical techniques.
- The versatile platform can be adapted for diverse fluorescence-based single-cell studies.
