Enzyme-responsive multifunctional surfaces for controlled uptake/release of (bio)molecules

Area of Science:

• Biomaterials Science
• Biochemistry
• Surface Chemistry

Background:

• The development of bioactive and biodegradable biomaterials is a key trend.
• Enzyme-responsive structures are crucial for creating biodegradable surfaces for controlled biomolecule/drug delivery via surface erosion.
• Current enzyme-responsive systems often rely on covalent linkages between synthetic polymers and biodegradable components sensitive to chemical or biological cues.

Purpose of the Study:

• To present a novel, non-covalent approach for creating enzyme-responsive, surface-attached networks.
• To demonstrate the utility of streptavidin-biotin interactions for constructing these networks.
• To validate the system's stability, enzyme-triggered degradation, and controlled release capabilities.

Main Methods:

• Exploiting non-covalent streptavidin-biotin interactions to build surface-attached networks.
• Incorporating biotinylated peptides as the enzyme-degradable functional component.
• Assessing system stability under physiological conditions and degradation upon enzyme exposure.
• Demonstrating controlled release of entrapped biomolecules/drugs.

Main Results:

• A stable, three-dimensional (3D) surface-attached network was successfully constructed using streptavidin-biotin interactions.
• The network exhibited efficient degradation upon exposure to specific proteases.
• Controlled release of entrapped biomolecules and drugs was achieved through enzymatic cleavage.
• The approach proved versatile and did not require complex chemical synthesis.

Conclusions:

• A novel, versatile, and non-covalently assembled enzyme-responsive biomaterial system was developed.
• This system facilitates controlled drug delivery and biomolecule release through enzyme-triggered degradation.
• The adaptable nature of this approach makes it highly promising for applications in tissue replacement, drug delivery, and biosensing.