Polyphenol-Enabled 2D Nanopatch for Enhanced Nasal Mucoadhesion and Immune Activation

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery

Background:

• Nasal drug delivery faces challenges from rapid mucociliary clearance (MCC).
• Conventional spherical nanoparticles exhibit limited mucoadhesion to the nasal mucosa.
• A 2D nanoscale structure may offer improved adhesion by aligning with mucosal layers.

Purpose of the Study:

• To investigate a 2D nanopatch strategy for enhanced nasal mucoadhesion.
• To utilize adhesive polyphenols, specifically tannic acid (TA), for improved delivery.
• To assess the potential of a TA-based 2D nanopatch for nasal vaccine delivery.

Main Methods:

• Assembly of a 2D nanopatch via tannic acid (TA) interaction with green fluorescent protein (GFP) and cell-penetrating peptide (CPP).
• Evaluation of nanopatch adhesion to nasal mucosa.
• Measurement of immunoglobulin A (IgA) secretions.

Main Results:

• The developed 2D nanopatch demonstrated robust adhesion to the nasal mucosa.
• Significant enhancement of immunoglobulin A secretions was observed.
• The 2D structure offers a superior alternative to conventional spherical nanoparticles for nasal delivery.

Conclusions:

• A polyphenol-enabled adhesive 2D nanopatch represents a significant advancement in nasal delivery systems.
• This novel strategy effectively counters mucociliary clearance.
• The 2D nanopatch holds promise for enhancing nasal vaccine delivery and other respiratory applications.