Advancements in Hyaluronic Acid Synthetic Methodologies and Their Translational Relevance

Area of Science:

• Biomaterials Science
• Glycosaminoglycan Chemistry
• Drug Delivery Systems

Background:

• Hyaluronic acid (HA) is a glycosaminoglycan with significant biological activity and therapeutic potential, particularly in cancer and inflammatory joint diseases.
• HA interacts with cell surface receptors like CD44 and RHAMM, making it a target for anticancer drug delivery.
• Current HA-based therapeutics face challenges due to batch-to-batch variability and inconsistent biological activity stemming from its biological sourcing.

Purpose of the Study:

• To review the biological roles of hyaluronic acid in cancer, cancer immune regulation, osteoarthritis, and rheumatoid arthritis.
• To summarize recent (2015-2025) synthetic and enzymatic methodologies for producing well-defined HA and its derivatives.
• To highlight the need for improved HA production and therapeutic design for successful clinical translation.

Main Methods:

• Literature review focusing on hyaluronic acid's biological roles and therapeutic applications.
• Summary of synthetic and enzymatic approaches for HA and derivative synthesis.
• Analysis of recent biomaterial reports on HA-based nanoparticles, hydrogels, and conjugates.

Main Results:

• Hyaluronic acid plays a critical role in cancer progression, immune response, osteoarthritis, and rheumatoid arthritis.
• Various synthetic and enzymatic methods have been developed to produce well-defined HA, including oligosaccharides, polymers, conjugates, nanoparticles, and hydrogels.
• Significant advancements in HA biomaterials have been reported in the past decade, addressing heterogeneity issues.

Conclusions:

• Standardizing HA production with narrow dispersity is essential for consistent biological activity and therapeutic efficacy.
• Further development of HA-based methodologies and therapeutic designs is critical for clinical translation and improved patient outcomes.
• Hyaluronic acid remains a promising biomaterial for diverse therapeutic applications, contingent on overcoming production and formulation challenges.