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Initial adhesion of endothelial cells on polyelectrolyte multilayer films
1Laboratoire de Mécanique et Ingénierie Cellulaire et Tissulaire, LEMTA-UMR 7563 (CNRS-UHP-INPL) et IFR 111, Faculté de Médecine, 54505 Vandoeuvre-lès-Nancy, France. cedric.boura@medecine.uhp-nancy.fr
Bio-Medical Materials and Engineering
|July 11, 2006
Summary
Polyelectrolyte multilayer films enhance Human Vein Umbilical Endothelial Cell (HUVEC) adhesion. While beta1 integrin expression remained unchanged, cell spreading improved on multilayer films, particularly those ending with poly(allylamine hydrochloride) (PAH).
Area of Science:
- Biomaterials Science
- Cell Biology
- Surface Chemistry
Background:
- Polyelectrolyte multilayer (PEM) films are explored to improve cell attachment on non-adhesive substrates.
- Human Vein Umbilical Endothelial Cells (HUVECs) are crucial for vascular tissue engineering.
Purpose of the Study:
- To evaluate the initial adhesion of HUVECs on PEM films ending with poly(D-lysine) (PDL) or poly(allylamine hydrochloride) (PAH).
- To investigate the role of beta1 integrins in HUVEC adhesion to PEM films.
Main Methods:
- HUVEC seeding on PEM films and control surfaces (PDL/PAH monolayers, glass) for 3 hours.
- Assessment of HUVEC morphology and beta1 integrin expression.
- Comparison of cell spreading and adhesion characteristics.
Main Results:
- HUVEC spreading was significantly enhanced on PEM films, especially the PAH-terminated film, compared to monolayers and glass.
- No significant difference in beta1 integrin expression was observed across all tested surfaces.
- Cell morphology indicated improved HUVEC spreading on multilayer films.
Conclusions:
- PEM films, particularly PAH-terminated ones, promote superior initial HUVEC adhesion and spreading.
- Beta1 integrins appear to play a limited role in HUVEC initial adhesion to these polyelectrolyte surfaces.
