Progress in Hyaluronan-Based Nanoencapsulation Systems for Smart Drug Release and Medical Applications.

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Hyaluronan (HA) is a crucial polysaccharide in vertebrate tissues, with its biological functions varying by molecular weight.
• High-molecular-weight HA offers anti-inflammatory and immunosuppressive benefits, while low-molecular-weight HA promotes inflammation and angiogenesis.
• HA's biocompatibility and tunable properties make it attractive for biomedical applications.

Purpose of the Study:

• To review recent advancements in encapsulating hyaluronan within nanosystems.
• To explore the use of HA-based hydrogels and nanoparticles for therapeutic agent delivery.
• To highlight the potential of modified HA systems in next-generation biomedical therapies.

Main Methods:

• Review of recent literature on hyaluronan encapsulation in hydrogels and nanoparticles.
• Analysis of studies reporting on HA-based nanosystem formulations and their therapeutic outcomes.
• Examination of HA modifications and composite systems for optimized drug delivery.

Main Results:

• HA-based formulations exhibit sustained drug release (up to 7 days) and particle sizes of 50-300 nm.
• Demonstrated wound closure rates exceeding 90% in animal models.
• Achieved 2-3 fold enhanced bioavailability of encapsulated drugs compared to free drugs.

Conclusions:

• Hyaluronan-based nanosystems significantly improve therapeutic efficacy and targeted drug delivery.
• These systems show potential for treating skin wound healing, diabetes, osteoarthritis, rheumatoid arthritis, and ophthalmic diseases.
• HA modifications and composite systems are key to optimizing drug release and biological interactions for advanced therapies.