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Interface-engineered Caco-2 cell culture on a collagen-coated liquid-liquid interface in a microfluidic device
1Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505 JAPAN.
Beilstein Journal of Nanotechnology
|June 17, 2026
Summary
Researchers developed a novel microfluidic platform using a liquid-liquid interface for culturing epithelial cells. This flexible substrate supports cell growth and maturation, advancing in vitro barrier models.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Microfluidics
Background:
- Epithelial tissues are crucial selective barriers for physiological homeostasis.
- Conventional in vitro models using solid substrates have limitations in physicochemical flexibility.
- Developing advanced cell culture models is essential for studying epithelial barrier function.
Purpose of the Study:
- To introduce a novel microfluidic platform utilizing a liquid-liquid interface as a substrate for epithelial cell culture.
- To assess the viability and suitability of this liquid interface for supporting epithelial cell adhesion, monolayer formation, and maturation.
- To explore the potential of this system for creating advanced multiphase microfluidic models of epithelial barriers.
Main Methods:
- A microfluidic platform was designed with a collagen-coated liquid-liquid interface between perfluorocarbon (FC-43) and culture medium.
- Caco-2 cells were cultured on this liquid interface within the microfluidic device.
- Immunofluorescence microscopy was employed to observe cell attachment, monolayer formation, tight junction development, and actin cytoskeleton organization.
Main Results:
- The liquid-liquid interface successfully supported Caco-2 cell attachment and the formation of stable epithelial monolayers.
- Immunofluorescence analysis confirmed the development of tight junctions and organized actin cytoskeletons, indicative of early epithelial maturation.
- The microfluidic system demonstrated the ability to form stable liquid interfaces suitable for cell culture.
Conclusions:
- A novel microfluidic system with a stable liquid-liquid interface provides a viable and flexible substrate for epithelial cell culture.
- This platform facilitates the study of epithelial barrier formation and maturation in vitro.
- The system offers new possibilities for developing advanced multiphase microfluidic models relevant to physiological research.

