Antimicrobial Functionalization of Surfaces by a Chimeric Adhesive Protein

Area of Science:

• Biomaterials Science
• Surface Chemistry
• Antimicrobial Technology

Background:

• Traditional surface modification methods for medical devices often involve harsh chemicals and lengthy procedures.
• Hydrophobins, surface-active proteins, offer a promising alternative for creating functionalized surfaces.
• Bacterial cellulose (BC) is a sustainable biomaterial with excellent properties for medical applications.

Purpose of the Study:

• To develop and evaluate a chimeric protein for preventing microbial growth on medical surfaces.
• To functionalize polystyrene (PS) and bacterial cellulose (BC) using a fungal hydrophobin (Vmh2) fused with an antimicrobial peptide (GKY20).
• To assess the efficacy of the functionalized surfaces in reducing microbial adhesion and proliferation.

Main Methods:

• Genetic fusion of fungal hydrophobin Vmh2 with antimicrobial peptide GKY20 to create a chimeric protein.
• Functionalization of polystyrene (PS) and bacterial cellulose (BC) surfaces with the chimeric protein.
• Evaluation of biofilm formation on modified PS surfaces.
• Assessment of the bactericidal effect of modified BC surfaces.

Main Results:

• The chimeric protein successfully adhered to both PS and BC surfaces.
• A significant reduction in biofilm formation was observed on the modified PS surfaces.
• The modified BC surfaces demonstrated a notable bactericidal effect.
• The functionalization process was efficient and utilized green chemistry principles.

Conclusions:

• The developed chimeric protein provides an effective strategy for creating antimicrobial surfaces.
• This approach offers a sustainable and user-friendly alternative to conventional surface modification techniques in medical technology.
• The findings highlight the potential of hydrophobin-based biomaterials for advanced medical applications.