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Cell cultures as tools in biopharmacy
1Biopharmacy, Department of Applied BioSciences, Federal Institute of Technology ETH, CH-8057, Zurich, Switzerland.
Summary
This study evaluates cell culture models for transport studies, finding MDCK cells ideal for passive permeation screening. However, P-glycoprotein-transfected cells are unsuitable for standard two-chamber transport assays.
Area of Science:
- Pharmacology
- Cell Biology
- Biophysics
Background:
- Cell culture models are crucial for studying drug transport.
- Standardization of these models is vital for reliable transport studies.
- Understanding passive permeation and transporter-mediated efflux is key in drug development.
Purpose of the Study:
- To survey and characterize cell culture models for transport studies.
- To evaluate their suitability for passive permeation and P-glycoprotein-mediated transport.
- To document the importance of standardization in transport model selection.
Main Methods:
- Characterization of cell models for growth, electrical resistance, and cytoarchitecture.
- Transport studies using a two-chamber vertical diffusion system.
- Efflux and uptake studies with P-glycoprotein-transfected cells in a one-chamber system.
Main Results:
- Different cell cultures exhibited similar apparent permeability (Papp) for non-homologous compounds.
- Cell origin did not significantly impact passive transcellular permeation.
- MDCK cells are well-suited for passive permeation screening due to low transporter expression and metabolic activity.
- P-glycoprotein-transfected MDCK cells are not suitable for two-chamber transport studies.
Conclusions:
- MDCK cells are a robust model for screening passive permeation.
- Standardization is essential for consistent results in cell-based transport models.
- Specific cell lines, like P-glycoprotein-transfected MDCK cells, require tailored experimental setups for accurate assessment.