Maleic anhydride copolymers--a versatile platform for molecular biosurface engineering

Area of Science:

• Materials Science
• Biotechnology
• Surface Chemistry

Background:

• Biofunctionalized materials are crucial for medical devices and diagnostics.
• Controlling the interface between biomolecules and surfaces is key to material performance.
• Existing methods for surface functionalization have limitations in precise control.

Purpose of the Study:

• To develop a versatile polymer coating platform for functional modulation of immobilized bioactive molecules.
• To demonstrate control over physicochemical constraints at solid/liquid interfaces.
• To enhance the performance of biofunctionalized materials for medical and diagnostic applications.

Main Methods:

• Covalent attachment of alternating maleic anhydride copolymers to surfaces.
• Functionalization of anhydride moieties via hydrolysis and reaction with amines.
• Immobilization of bioactive molecules (fibronectin, poly(ethylene oxide), thrombin inhibitors) onto the polymer platform.

Main Results:

• Demonstrated precise control over the immobilization of bioactive molecules.
• Showcased the influence of substrate anchorage on cell-matrix adhesions (fibronectin).
• Illustrated control of endothelial cell orientation using anti-adhesive micropatterns (poly(ethylene oxide)).
• Revealed spacer-dependent activity of immobilized thrombin inhibitors.

Conclusions:

• The developed polymer coating platform offers versatile functional modulation of immobilized biomolecules.
• This approach allows for fine-tuning of bio-interface properties, impacting material performance.
• The platform has significant potential for advancing medical devices and molecular diagnostics.