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Isolation of Human Primary Valve Cells for In vitro Disease Modeling
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Modulation of human valve interstitial cell phenotype and function using a fibroblast growth factor 2 formulation
Najma Latif1, Alfred Quillon2, Padmini Sarathchandra3
1Imperial College, Heart Science Centre, Harefield Hospital, Harefield, Middx, UB9 6JH, United Kingdom; QCRC, Qatar Cardiovascular Research Centre, Qatar Foundation, Doha, Qatar.
Plos One
|June 5, 2015
Summary
A new fibroblast culture media formulation helps maintain valve interstitial cells (VICs) in their native, fibroblastic state. This method is crucial for studying valve biology, pathology, and advancing tissue engineering applications.
Area of Science:
- Cardiovascular Biology
- Cell Biology
- Biomaterials Science
Background:
- Valve interstitial cells (VICs) typically adopt a myofibroblastic phenotype in culture.
- Maintaining the native fibroblastic phenotype of VICs is essential for accurate research.
Purpose of the Study:
- To evaluate a novel fibroblast culture media's efficacy in preserving VIC phenotype and function.
- To compare VIC behavior in the new media versus standard DMEM.
Main Methods:
- Human VICs were cultured in standard DMEM and a specialized fibroblast media (FGF2, insulin, FCS).
- Assessed cell morphology, protein expression (α-SMA, SM22, EDA-fibronectin), proliferation, and function (contraction, migration).
- Utilized microscopy, Western blotting, cell cycle analysis, and collagen gel assays.
Main Results:
- VICs in fibroblast media exhibited smaller, elongated morphology, unlike spread cells in DMEM.
- Significantly reduced expression of myofibroblast markers (α-SMA, SM22, EDA-fibronectin) was observed.
- Proliferation, collagen gel contraction, and focal adhesion formation were significantly decreased.
- Ultrastructural analysis showed VICs in fibroblast media resembled native valve cells.
Conclusions:
- The fibroblast media formulation effectively maintains VICs in a native fibroblastic phenotype.
- This approach supports accurate study of valve biology and pathology.
- The method is valuable for advancing cardiovascular tissue engineering research.
