Exploring the Potential of Various Cyclodextrin-Based Derivatives in Enzyme Supramolecular Engineering

Area of Science:

• Biotechnology
• Materials Science
• Biochemistry

Background:

• Enzyme stability and activity are critical for industrial applications.
• Enzyme supramolecular engineering creates protective nano-environments.
• Cyclodextrins (CDs) stabilize protein structures by interacting with hydrophobic residues.

Purpose of the Study:

• To assess organosilane derivatives based on alpha-, beta-, and gamma-cyclodextrins (CDs) for enzyme stabilization.
• To optimize organosilica layers containing CDs for enzyme immobilization.
• To evaluate the protective effects of CD-based layers against various stressors.

Main Methods:

• Immobilization of a model lipase enzyme onto silica nanoparticles.
• Shielding the immobilized enzyme within an organosilica layer containing CD derivatives.
• Testing enzyme stability and activity under thermal, SDS, and urea stress.
• Optimization of organosilica layer thickness.

Main Results:

• Organosilica layers incorporating CDs significantly improved enzyme thermal stability.
• CD-enhanced layers facilitated enzyme refolding after denaturation.
• Alpha-CD derivatives provided superior protection compared to beta- and gamma-CDs.
• The strategy was also effective for a thermostable beta-galactosidase enzyme.

Conclusions:

• CD-based organosilica layers are effective for enhancing enzyme stability and stress resistance.
• Alpha-CDs demonstrate the most significant protective effects among the tested cyclodextrins.
• This supramolecular engineering approach offers a promising strategy for industrial enzyme applications.