Quantitative measurements in single-cell analysis: towards scalability in microbial bioprocess development

Area of Science:

• Biotechnology
• Bioprocess Engineering
• Microfluidics

Background:

• Single-cell analysis in microfluidic devices offers significant potential for industrial bioprocess development.
• High parallelization in microfluidics allows simultaneous cultivation experiments and rapid environmental condition changes.
• Assessing media composition effects on cell growth during batch cultivation is readily achievable.

Purpose of the Study:

• To address the need for complete characterization of microfluidic experiments using conventional performance indicators for scalability.
• To explore and improve optical methods for quantitative extracellular metabolite measurements in microfluidic systems.

Main Methods:

• Utilizing microfluidic cultivation devices for high-throughput cell culture experiments.
• Investigating optical methods, including enzymatic assays and fluorescence sensors, for metabolite detection.
• Comparing optical methods with traditional mass spectrometry for microfluidic integration.

Main Results:

• Microfluidic cultivation facilitates rapid screening of environmental conditions and media compositions.
• Current optical methods require further refinement for accurate, quantitative extracellular metabolite analysis.
• Mass spectrometry integration with microfluidics remains a challenge for comprehensive bioprocess characterization.

Conclusions:

• Microfluidic cultivation is a powerful tool for bioprocess optimization, but scalability is hindered by measurement limitations.
• Advancements in optical sensing technologies are crucial for enabling quantitative metabolite monitoring in microfluidic systems.
• Bridging the gap between microfluidic capabilities and conventional performance metrics is essential for industrial application.