Injectable hyaluronic acid-based hydrogel niches to create localized and time-controlled therapy delivery

Area of Science:

• Biomaterials Science
• Drug Delivery Systems
• Tissue Engineering

Background:

• Hydrogel niches concentrate therapies for enhanced efficacy and reduced systemic side effects.
• Precise control over matrix properties, degradation, and release kinetics is crucial for optimizing therapeutic outcomes.

Purpose of the Study:

• To develop an injectable hydrogel system for controlled and targeted therapy delivery.
• To engineer a versatile platform capable of modulating therapeutic release profiles.

Main Methods:

• Designed an injectable hydrogel using hyaluronic acid crosslinked with multi-arm polyethylene glycol via click chemistry.
• Functionalized the hydrogel with RGD peptides and incorporated thiol-modified heparin for specific cytokine binding.
• Investigated the effect of crosslinking degree and heparin incorporation on release kinetics and material properties.

Main Results:

• Heparin incorporation effectively delayed cytokine release from the hydrogel.
• Adjusting the crosslinking degree allowed for tunable release of nanocarriers by modulating pore size and degradation rate.
• The developed hydrogel maintained injectability while offering controlled release characteristics.

Conclusions:

• The developed hyaluronic acid-based hydrogel serves as a versatile and efficient platform for targeted therapy delivery.
• This system demonstrates potential for therapeutic applications across a broad spectrum of diseases by enabling precise control over drug release.
• The tunable nature of the hydrogel allows for optimization of dosage and therapeutic effect duration.