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Polystyrene-block-polyethylene oxide thin films: In vitro cytocompatibility and protein adsorption testing
Isabela Monteiro A1, Tarek Kollmetz1, David S Musson2
1Department of Chemical and Materials Engineering, The University of Auckland, Auckland 1023, New Zealand.
Biointerphases
|February 2, 2020
Summary
Polystyrene-block-polyethylene oxide (PS-b-PEO) surfaces show excellent cytocompatibility for cell culture. These surfaces support cell spreading and viability over five days, making them favorable for biological studies.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Cell Biology
Background:
- Polystyrene-block-polyethylene oxide (PS-b-PEO) surfaces are increasingly explored for cell culture applications.
- Extensive assessment of their cytocompatibility, particularly regarding cellular interactions and protein adsorption, is lacking.
Purpose of the Study:
- To comprehensively evaluate the in vitro cytocompatibility of PS-b-PEO surfaces.
- To investigate cellular morphology, metabolic activity, and viability on PS-b-PEO substrates.
- To analyze extracellular matrix protein adsorption on PS-b-PEO thin films.
Main Methods:
- In vitro assessment of cellular morphology, metabolic activity, and viability over 1, 3, and 5 days.
- Quartz Crystal Microbalance with Dissipation (QCM-D) analysis to quantify protein adsorption.
- Comparison with homogeneous polystyrene surfaces.
Main Results:
- Cell viability remained above 90% throughout the 5-day culture period.
- Cells exhibited significant spreading, indicated by the formation of prominent F-actin stress fibers.
- No significant difference in extracellular matrix protein adsorption was observed between PS-b-PEO surfaces (≈28% PEO coverage) and polystyrene controls.
Conclusions:
- PS-b-PEO thin films demonstrate robust cytocompatibility for cell culture applications.
- These surfaces effectively support cell adhesion, spreading, and viability.
- PS-b-PEO coatings represent a promising material for advanced cell culture studies.
