Collagen and glycopolymer based hydrogel for potential corneal application

Area of Science:

• Biomaterials Science
• Ophthalmology
• Polymer Chemistry

Background:

• Corneal diseases necessitate advanced biomaterials for transplantation.
• Existing treatments face challenges in biocompatibility and long-term efficacy.
• Development of synthetic materials mimicking native corneal properties is crucial.

Purpose of the Study:

• To synthesize and characterize 6-Methacryloyl-alpha-D-galactopyranose (MG).
• To fabricate and evaluate interpenetrating polymer network (IPN) hydrogels for corneal applications.
• To assess the optical, mechanical, and biological properties of MG-collagen IPN hydrogels.

Main Methods:

• Synthesis and characterization of 6-Methacryloyl-alpha-D-galactopyranose (MG) using FTIR, NMR, and X-ray diffraction.
• Fabrication of IPN hydrogels via simultaneous photocuring of MG and chemical crosslinking of collagen.
• Evaluation of hydrogel properties including optical characteristics, tensile strength, modulus, biodegradation, cell adhesion, proliferation, and antibacterial activity.

Main Results:

• MG was successfully synthesized and characterized.
• MG-collagen IPN hydrogels exhibited optical properties comparable to human corneas.
• Incorporation of MG enhanced hydrogel tensile strength, modulus, and stability against collagenase.
• In vitro studies showed excellent human corneal epithelial cell adhesion and proliferation, with superior bacterial adhesion blocking compared to native cornea.

Conclusions:

• The developed MG-collagen IPN hydrogel is a promising biomaterial for corneal lamellar keratoplasty.
• The hydrogel demonstrates favorable optical, mechanical, and biological properties for ocular surface reconstruction.
• Further research may lead to improved outcomes in corneal regenerative medicine.