Bioinspired Nanoplatforms: Polydopamine and Exosomes for Targeted Antimicrobial Therapy

Area of Science:

• Biomaterials Science
• Nanotechnology
• Infectious Diseases

Background:

• Antimicrobial resistance (AMR) necessitates novel therapeutic strategies beyond conventional antibiotics.
• Polydopamine (PDA), a versatile polymer, exhibits inherent antimicrobial properties and excellent adhesion.
• Extracellular vesicles (EVs), particularly exosomes, are recognized for their drug delivery and immune-modulating capabilities.

Purpose of the Study:

• To review the synergistic integration of polydopamine (PDA) and exosomes for developing advanced antimicrobial nanoplatforms.
• To explore the combined antimicrobial efficacy and functional advantages of PDA-exosome hybrids.
• To address challenges and highlight future directions for PDA-exosome therapeutics against AMR.

Main Methods:

• Literature review focusing on polydopamine (PDA) and exosome synergy.
• Discussion of PDA coating advantages: enhanced stability, ROS generation, and surface functionalization.
• Exploration of hybrid design methodologies and alternative antimicrobial polymers.

Main Results:

• PDA coating enhances exosome stability and facilitates surface functionalization for targeted delivery.
• PDA-exosome hybrids demonstrate inherent antimicrobial activity, addressing AMR.
• Integration of other materials like quaternized chitosan and zwitterionic polymers is feasible.

Conclusions:

• PDA-coated exosomes represent a promising multifunctional nanoplatform for combating AMR.
• Potential applications include wound healing, implant protection, and targeted infection control.
• Future research should focus on stimulus-responsive coatings, AMP incorporation, and clinical translation.