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Preparation and Structural Evaluation of Epithelial Cell Monolayers in a Physiologically Sized Microfluidic Culture Device
Published on: July 1, 2022
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A novel strategy to facilitate uniform epithelial cell maturation using liquid-liquid interfaces
Rie Sonoi1, Masamichi Kamihira2
1Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan. rsonoi@chem-eng.kyushu-u.ac.jp.
Scientific Reports
|May 29, 2024
Summary
This study introduces a novel liquid-liquid interface culture method for uniform epithelial cell maturation. This technique promotes cell growth and tight junction formation, crucial for barrier function.
Area of Science:
- Cell Biology
- Biomaterials Science
Background:
- Epithelial tissues are vital for bodily barrier functions.
- Uniform epithelial cell maturation is essential for tissue integrity and function.
- Current cell culture methods often struggle to replicate in vivo conditions for epithelial cells.
Purpose of the Study:
- To develop and evaluate a novel liquid-liquid interface culture system for promoting uniform epithelial cell maturation.
- To investigate the effects of liquid-liquid interfaces on epithelial cell behavior, including migration, growth, and morphology.
- To assess the role of Rho-associated protein kinase (ROCK) inhibition in enhancing tight junction formation and cell distribution.
Main Methods:
- Culturing Madin-Darby canine kidney (MDCK) cells at a liquid-liquid interface.
- Utilizing fibronectin-coated liquid-liquid interfaces to study cell migration and growth.
- Treating cells with Y27632, a ROCK inhibitor, to assess its impact on stress fiber formation, apoptosis, and tight junction formation.
- Quantifying cell distribution using nucleus density ratios (H_LN) and tight junction formation via ZO-2 positive cell frequency (F_Z).
Main Results:
- Culturing MDCK cells at a liquid-liquid interface reduced migration but stimulated active cell growth.
- Fibronectin coating on the liquid-liquid interface promoted cell migration and growth to confluency.
- Cells exhibited reduced stress fiber formation, adopted a cobblestone shape, and showed even distribution.
- Y27632 treatment facilitated tight junction formation (F_Z = 0.73) and enhanced even cell distribution (H_LN = 0.93 ± 0.01) at 72 hours.
Conclusions:
- The liquid-liquid interface culture system effectively promotes uniform maturation of epithelial cells.
- ROCK inhibition with Y27632 is crucial for enhancing tight junction formation and cell distribution in this culture system.
- This novel culture design offers a promising approach for studying and engineering epithelial tissues with improved barrier functions.
Keywords:
Cell behaviorEpithelial cellsLiquid–liquid interfacesNucleus densityTight junctionUniform maturation
