Nanotopology-Enabled On-Site Pathogen Detection for Managing Atopic Dermatitis

Area of Science:

• Biotechnology
• Materials Science
• Dermatology

Background:

• Atopic dermatitis (AD) is a common skin condition often worsened by microbial infections.
• Accurate pathogen identification is crucial for effective AD management, but current tools are lacking.
• A reliable, safe method for on-site pathogen detection in AD is needed.

Purpose of the Study:

• To develop and validate a novel on-site pathogen detection tool for severe atopic dermatitis.
• To combine chemically functionalized nanotopology with genetic analysis for pathogen capture and identification.
• To assess the efficiency and safety of the developed nanotopology for isolating skin pathogens.

Main Methods:

• Fabrication of a 3D hierarchical nanopillar array (HNA) with a functional polymer coating for pathogen capture.
• Utilizing an HNA-assembled stick for direct bacterial retrieval from infected skin samples.
• Employing extraction-free quantitative loop-mediated isothermal amplification (direct qLAMP) for pathogen validation.
• Testing the system on porcine skin to mimic human conditions and capture Staphylococcus aureus.

Main Results:

• The functionalized nanotopology demonstrated superior pathogen capture efficiency and favorable entrapment patterns.
• The developed method showed non-cytotoxicity, ensuring safety for skin applications.
• The on-site detection system achieved a detection limit of 10^3 cells/mL.
• Successful capture and detection of Staphylococcus aureus from porcine skin models were achieved.

Conclusions:

• The HNA-assembled stick is a promising tool for the on-site detection of bacteria associated with atopic dermatitis.
• This innovative approach enhances understanding of AD pathogenesis.
• The technology offers potential for more effective management strategies for chronic skin conditions.