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Isolation of Valvular Endothelial Cells
Published on: December 29, 2010
Isolation of valvular endothelial cells
Russell A Gould1, Jonathan T Butcher
1Department of Biomedical Engineering, Cornell University.
Journal of Visualized Experiments : Jove
|January 21, 2011
Summary
This study presents reliable methods for isolating and culturing pure populations of valvular endothelial cells (VEC), crucial for understanding heart valve function and repair. These protocols ensure VEC purity and phenotype verification for advanced cardiovascular research.
Area of Science:
- Cardiovascular Biology
- Cell Biology
- Tissue Engineering
Background:
- Heart valves ensure unidirectional blood flow, enduring billions of cycles.
- Valvular endothelial cells (VEC) and interstitial cells (VIC) are key to tissue repair and remodeling.
- Understanding VEC behavior is vital, but their isolation and culture present challenges.
Purpose of the Study:
- To establish robust protocols for the isolation, culture, and verification of pure valvular endothelial cell (VEC) populations.
- To enable detailed in vitro studies of VEC function and behavior in cardiovascular research.
- To provide a foundation for understanding heart valve maintenance and disease.
Main Methods:
- Enzymatic digestion and gentle swab scraping for VEC dislodgement.
- Centrifugation, resuspension, and plating on collagen I-coated flasks.
- Phenotypic verification using contact inhibition, endothelial markers (PECAM1, vWF), and negative α-SMA expression.
Main Results:
- Successful isolation and culture of pure VEC populations achieved.
- Confirmed VEC phenotype through characteristic growth and marker expression.
- Demonstrated VEC's unique capacity for mesenchymal transformation in vitro.
Conclusions:
- The presented protocols facilitate reliable isolation and culture of pure VEC.
- Verified VEC phenotype and functional characteristics, including LDL uptake.
- Highlighted VEC's potential for mesenchymal transition, relevant to valve development and pathology.
