Microfluidics for synthetic biology: from design to execution

Area of Science:

• Cellular and Molecular Biology
• Biotechnology
• Microfluidics

Background:

• Microfluidic devices, particularly microchemostats, are crucial for studying cellular responses in dynamic environments.
• These devices allow precise control over cellular conditions and high-quality single-cell gene expression data capture.
• Essential for research on population heterogeneity and gene expression noise.

Purpose of the Study:

• To provide a comprehensive guide for the experimental use of microfluidic microchemostat devices.
• To detail the design, fabrication, and operational procedures for microchemostat experiments.
• To enable researchers to generate dynamic cellular environments and analyze single-cell data.

Main Methods:

• Rational design of microchemostats with analysis of critical components like cell traps.
• On-chip dynamic environment generation using integrated fluidic junctions and hydrostatic pressure modulation.
• Methods for automated cell tracking and analysis of large datasets, including Saccharomyces cerevisiae.
• Detailed fabrication protocols from wafer processing to chip bonding.

Main Results:

• Demonstration of a microfluidic system for generating dynamic cellular environments.
• Development of methods for high-throughput microchemostat experiments through parallelization.
• Successful application in experiments with Escherichia coli and Saccharomyces cerevisiae.

Conclusions:

• Microfluidic microchemostats are powerful tools for high-resolution studies of cellular behavior.
• The described methods facilitate the design, fabrication, and operation of these devices.
• This work supports advanced research in single-cell biology and population dynamics.