A Customizable Proteinic Bioadhesive Patch with Water-Switchable Underwater Adhesiveness, Adjustable...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Polymer Chemistry

Background:

• Synthetic bioadhesives pose toxicity risks upon degradation, necessitating biocompatible alternatives.
• Natural biomaterials require enhanced adhesive strength and organ-specific customization for medical applications.
• Underwater adhesion is critical for implantable medical devices and internal organ repair.

Purpose of the Study:

• To develop customizable underwater bioadhesive patches (CUBAPs) with strong adhesion, controllable biodegradability, and stretchability.
• To utilize bioengineered mussel adhesive proteins conjugated with acrylic and methacrylic acid for enhanced underwater adhesion.
• To evaluate the efficacy of CUBAPs for wound healing in internal organs and medical device implantation.

Main Methods:

• Conjugation of bioengineered mussel adhesive proteins with acrylic acid and/or methacrylic acid.
• Fabrication of three types of customized underwater bioadhesive patches (CUBAPs).
• Assessment of underwater adhesion, biodegradability, stretchability, and biocompatibility through ex vivo and in vivo studies.

Main Results:

• The CUBAP system demonstrated strong underwater adhesion upon hydration, with tunable biodegradation and physical properties.
• Adjusting the ratio of poly(acrylic acid) and poly(methacrylic acid) allowed for control over patch characteristics.
• Successful ex vivo and in vivo evaluations confirmed CUBAP suitability for wound healing in diverse internal organs.

Conclusions:

• The innovative CUBAP system provides strong underwater adhesiveness with adjustable biodegradation and physical properties.
• CUBAPs show significant potential for various biomedical applications, including internal organ repair and medical device integration.
• This bioadhesive technology addresses limitations of current synthetic options, offering a promising biocompatible solution.