Protecting bactofencin A to enable its antimicrobial activity using mesoporous matrices.

Area of Science:

• Biomaterials Science
• Antimicrobial Research
• Nanotechnology

Background:

• Global rise in antimicrobial resistance (AMR) necessitates novel therapeutic strategies.
• Bactofencin A, a promising antimicrobial peptide, suffers from enzyme degradation, limiting its clinical application.
• Mesoporous silica materials offer potential for drug delivery and stabilization.

Purpose of the Study:

• To enhance the stability and activity of bactofencin A using mesoporous silica matrices.
• To evaluate the protective effect of SBA-15 and MSE matrices against enzymatic degradation.
• To assess the potential of these composite materials as novel antibiotic formulations.

Main Methods:

• Bactofencin A was loaded onto SBA-15 and periodic mesoporous organosilane (MSE) matrices.
• In vitro antimicrobial assays were performed to evaluate activity against S. aureus.
• Enzymatic degradation studies using trypsin were conducted to assess peptide stability.

Main Results:

• Higher bactofencin A loading was achieved on hydrophilic SBA-15 compared to MSE.
• Mesoporous matrices protected bactofencin A from trypsin degradation, maintaining antimicrobial activity.
• Loaded matrices exhibited enhanced antimicrobial activity against S. aureus compared to free bactofencin A.
• Controlled release of bactofencin A was observed from the MSE matrix.

Conclusions:

• Mesoporous matrices significantly enhance the stability and activity of bactofencin A.
• These composite materials show promise for developing effective treatments against antimicrobial-resistant bacteria.
• In silico studies can guide the selection of optimal matrices for bacteriocins.