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A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
Published on: October 15, 2013
Development of a disposable microfluidic biochip for multiparameter cell population measurements
Johanna Gottschamel1, Lukas Richter, Andy Mak
1Department of Health & Environment, Nano Systems, Austrian Institute of Technology, Donau-City Street 1, 1220 Vienna, Austria.
Analytical Chemistry
|September 17, 2009
Summary
Healthcare-associated infections are a major cause of death. This study developed a microfluidic biochip to monitor fungal biofilm growth, offering a new tool for infection control and patient safety.
Area of Science:
- Biomedical Engineering
- Microfluidics
- Infectious Diseases
Background:
- Healthcare-associated infections (HAIs) are a significant cause of preventable mortality.
- Biofilms on medical devices contribute to HAIs, prolonged hospital stays, and increased suffering.
- Current methods lack satisfactory solutions for monitoring biofilm formation under near-native conditions.
Purpose of the Study:
- To develop a disposable microfluidic biochip for continuous monitoring of cell population dynamics.
- To enable real-time assessment of fungal biofilm growth rates and metabolic activities.
- To provide a novel platform for studying microbial responses under physiological conditions.
Main Methods:
- Development of a disposable microfluidic biochip with integrated contactless bioimpedance spectroscopy and amperometric measurements.
- Utilization of high-density interdigitated capacitors (microIDC) with SU-8 passivation for noninvasive biofilm assessment.
- Measurement of biofilm respiration activity using redox-mediators and band electrodes in microchannels.
Main Results:
- Demonstrated simultaneous contactless bioimpedance spectroscopy and amperometric measurements for biofilm monitoring.
- Successfully quantified fungal biofilm growth rates and metabolic activities.
- Continuously monitored the dynamic responses of Candida albicans to varying glucose and galactose concentrations.
Conclusions:
- The developed microfluidic biochip offers a novel platform for continuous, real-time monitoring of fungal biofilm dynamics.
- This technology can aid in understanding infection mechanisms and developing effective strategies for preventing HAIs.
- The disposable biochip enables noninvasive assessment of biofilm formation and metabolic activity under physiological shear forces.
