Papain Covalent Immobilization in Bacterial Cellulose Films as a Wound Dressing

Area of Science:

• Biomaterials Science
• Wound Healing Research
• Enzyme Immobilization

Background:

• Effective wound closure relies on dressings with beneficial properties.
• Debridement is crucial for managing the wound bed and promoting re-epithelialization.
• Current dressings typically lack inherent debridement capabilities.

Purpose of the Study:

• To create a bacterial cellulose-based wound dressing with integrated debridement functionality.
• To chemically modify bacterial cellulose and immobilize the proteolytic enzyme papain.
• To evaluate the properties and biocompatibility of the developed wound dressing.

Main Methods:

• Bacterial cellulose films were chemically modified using a succinic acid spacer.
• Papain was covalently immobilized onto the modified bacterial cellulose via an amide bond.
• Fourier-transform infrared (FT-IR) and UV-visible spectroscopy confirmed bioconjugation.
• Enzyme activity and fibroblast cell compatibility were assessed.

Main Results:

• Successful conjugation of papain to bacterial cellulose was confirmed.
• High enzyme immobilization yield (33% w/w) was achieved with retained activity.
• The papain-conjugated bacterial cellulose demonstrated excellent compatibility with fibroblast cells.
• Characterization confirmed the formation of a bioconjugated polymer structure.

Conclusions:

• A novel bacterial cellulose-papain conjugate was successfully synthesized.
• The developed material exhibits promising debridement properties for wound care.
• The biocompatibility suggests potential as an advanced wound dressing material.