Chitosan Based Self-Assembled Nanoparticles in Drug Delivery

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Chitosan, a deacetylated chitin derivative, possesses favorable biological properties including biocompatibility, biodegradability, and mucoadhesion.
• These characteristics make it a promising material for advanced drug delivery systems.
• Chitosan nanoparticles are particularly suitable for non-invasive administration routes like oral, nasal, pulmonary, and ocular delivery.

Purpose of the Study:

• To review the primary methods for preparing chitosan nanoparticles via self-assembly.
• To illustrate the current applications of these self-assembled chitosan nanoparticles in drug delivery.

Main Methods:

• Grafting hydrophobic moieties onto chitosan to promote self-assembly into nanoparticles.
• Formation of polyelectrolyte complexes between chitosan and polyanions to create self-assembled nanoparticles.

Main Results:

• Grafting introduces a hydrophobic-hydrophilic balance, facilitating self-assembly for drug encapsulation.
• Polyelectrolyte complexation offers another effective route for generating self-assembled chitosan nanoparticles.
• Chitosan nanoparticles demonstrate an absorption-enhancing effect, improving drug delivery.

Conclusions:

• Self-assembly techniques, including grafting and polyelectrolyte complexation, are effective for producing chitosan nanoparticles.
• These nanoparticles show significant potential for improving drug delivery, particularly through non-invasive routes.
• The review highlights the current state of research and applications in chitosan nanoparticle-based drug delivery.