Recent Developments in Hyaluronic Acid-Based Hydrogels for Cartilage Tissue Engineering Applications

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Articular cartilage lesions are common, risking osteoarthritis development.
• Current treatments like autologous chondrocyte implantation (ACI) and matrix-associated autologous chondrocyte implantation (MACI) have low patient compliance.
• Cartilage tissue engineering (CTE) offers a promising alternative for cartilage repair.

Purpose of the Study:

• To review hyaluronic acid (HA)-based hydrogels for cartilage repair.
• To focus on the preclinical and clinical assessment of these HA hydrogels.
• To highlight HA hydrogels as favorable candidates for CTE.

Main Methods:

• Review of existing literature on HA-based hydrogels for cartilage repair.
• Analysis of various HA hydrogel types: in situ forming, cryogels, microgels, and 3D-bioprinted constructs.
• Evaluation of preclinical and clinical data on HA hydrogel efficacy.

Main Results:

• HA hydrogels mimic native cartilage, promoting extracellular matrix formation.
• HA's bioactivity supports chondrocyte growth and mesenchymal stem cell differentiation.
• Diverse HA hydrogel formulations have been developed and tested for cartilage repair.

Conclusions:

• HA-based hydrogels are effective biomaterials for cartilage tissue engineering.
• These hydrogels offer improved cell interaction and tissue regeneration potential.
• Further clinical assessment of HA hydrogels is warranted for cartilage repair applications.