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Updated: Apr 17, 2026
Microfluidic Co-culture of Epithelial Cells and Bacteria for Investigating Soluble Signal-mediated Interactions
Published on: April 20, 2010
High-throughput microfluidic method to study biofilm formation and host-pathogen interactions in pathogenic
Yannick D N Tremblay1, Philippe Vogeleer1, Mario Jacques1
1Département de Pathologie et Microbiologie, Groupe de Recherche sur les Maladies Infectieuses du Porc, Centre de Recherche en Infectiologie Porcine et Avicole, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada.
The BioFlux 200 microfluidic system effectively models pathogenic Escherichia coli biofilm formation and host-pathogen interactions under shear force. This system aids in identifying novel factors influencing E. coli virulence and biofilm development.
Area of Science:
- Microbiology
- Biotechnology
- Cell Biology
Background:
- Traditional multiwell plates lack shear force, limiting realistic in vivo modeling of host-pathogen interactions.
- Microfluidic systems offer a solution by incorporating shear force and small volumes for improved cell biology models.
- Pathogenic Escherichia coli biofilm formation is a critical factor in host-pathogen interactions and infections.
Purpose of the Study:
- To evaluate the BioFlux 200 microfluidic system for studying host-pathogen interactions and pathogenic E. coli biofilm formation.
- To establish optimal growth conditions for E. coli biofilm development within the microfluidic system on abiotic and biotic surfaces.
- To demonstrate the system's utility by assessing the biofilm-forming capacity of an E. coli mutant lacking a key adhesion factor.
Main Methods:
- Utilized the BioFlux 200 microfluidic system to culture pathogenic E. coli strains.
- Tested biofilm formation on abiotic (glass) and biotic (HRT-18 cell monolayers) surfaces under varying media and temperature conditions.
- Assessed the impact of shear force on biofilm development and host cell interaction.
- Evaluated an E. coli mutant strain lacking the AIDA-I adhesion factor.
Main Results:
- Biofilm formation on glass was strain-dependent, favored by M9 medium at 30 °C.
- HRT-18 cell monolayers significantly enhanced E. coli binding and biofilm formation in RPMI medium at 37 °C.
- An E. coli mutant lacking AIDA-I showed reduced biofilm formation compared to the parental strain on both surfaces.
Conclusions:
- The BioFlux 200 system is a viable microfluidic model for studying pathogenic E. coli biofilm formation and host-pathogen interactions under shear force.
- This high-throughput screening method can identify novel factors involved in E. coli virulence and biofilm development.
- The system provides a more physiologically relevant environment compared to static multiwell plate assays.
