Chemical Modifications in Hyaluronic Acid-Based Electrospun Scaffolds

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Polymer Chemistry

Background:

• Hyaluronic acid (HA), a natural glycosaminoglycan, is crucial in extracellular matrix (ECM) functions.
• Electrospun HA-based fibers offer potential for tissue regeneration due to their nano/micro-scale architecture.
• HA's high water solubility necessitates modifications for stability in biological environments.

Purpose of the Study:

• To review chemical modifications applied to hyaluronic acid (HA) and HA-based electrospun scaffolds.
• To categorize these modifications into crosslinking and bioactive molecule conjugation.
• To highlight the role of peptides in functionalizing HA scaffolds.

Main Methods:

• Review of existing literature on electrospun HA-based materials.
• Classification of chemical modifications into in-situ and off-site crosslinking.
• Analysis of conjugation strategies for bioactive molecules, particularly peptides, onto HA.

Main Results:

• Electrospun HA fibers are often blended with other polymers to create scaffolds.
• Chemical modifications, including crosslinking and peptide conjugation, enhance HA scaffold stability and functionality.
• Crosslinking prevents HA release in biological fluids and improves scaffold integrity.

Conclusions:

• Chemical modifications are essential for optimizing HA-based electrospun scaffolds for biomedical applications.
• Crosslinking and bioactive molecule conjugation significantly improve the performance of HA scaffolds in tissue engineering.
• Future research should focus on advanced functionalization strategies, such as peptide conjugation, for tailored regenerative medicine solutions.