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06:50
Sandwich-like Microenvironments to Harness Cell/Material Interactions
Published on: August 4, 2015
α- and β-poly(vinylidene fluoride) evoke different cellular behaviours
Y K A Low1, N Meenubharathi, N D Niphadkar
1School of Materials Science and Engineering, Nanyang Technological University, Singapore.
Journal of Biomaterials Science. Polymer Edition
|August 12, 2010
Summary
Alpha-phase poly(vinylidene fluoride) (PVDF) supports better cell spreading and metabolic activity than beta-phase PVDF. This finding highlights potential biomedical applications for different PVDF polymorphs.
Area of Science:
- Biomaterials Science
- Polymer Science
- Cell Biology
Background:
- Poly(vinylidene fluoride) (PVDF) is a biocompatible material, but the influence of its different phases on cellular behavior is not well understood.
- While beta-phase PVDF is known for its piezoelectric properties, the distinct effects of alpha-phase and beta-phase PVDF on cell attachment and metabolism require investigation.
Purpose of the Study:
- To investigate the differential effects of alpha-phase PVDF and beta-phase PVDF on L929 cell attachment and metabolic activity.
- To compare cell morphology and focal adhesion protein expression on the two PVDF polymorphs.
Main Methods:
- Fabrication of alpha-phase (DMF-PVDFα) and beta-phase (HMPA-PVDFβ) PVDF films via solvent casting.
- Characterization of PVDF phases using differential scanning calorimetry, Fourier transform infrared spectroscopy, and X-ray diffraction.
- In vitro evaluation of L929 cell attachment, metabolic activity, morphology, and paxillin expression on the fabricated PVDF films.
Main Results:
- Both alpha-phase and beta-phase PVDF supported a 3-fold increase in cell metabolic activity over one week.
- Alpha-phase PVDF (DMF-PVDFα) exhibited higher cell metabolic activity on day 5 compared to beta-phase PVDF (HMPA-PVDFβ).
- Cells on alpha-phase PVDF showed enhanced spreading and perinuclear paxillin localization, while cells on beta-phase PVDF appeared rounded with fewer paxillin spots.
Conclusions:
- Alpha-phase PVDF promotes superior cell spreading and metabolic activity compared to beta-phase PVDF.
- The distinct cellular responses to different PVDF polymorphs suggest tailored applications in biomedicine.
- Understanding phase-specific cellular interactions is crucial for optimizing PVDF-based biomaterials.
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