Hyaluronic Acid-PEG-Based Diels–Alder<i>In Situ</i>Forming Hydrogels for Sustained Intraocular Delivery of Bevacizumab
Blessing C. Ilochonwu, Marko Mihajlovic, Roel F. Maas-Bakker, Charis Rousou, Miao Tang, Mei Chen, Wim E. Hennink, Tina Vermonden
Abstract
fabricated samples. Swelling and degradation studies showed that the hydrogels are biodegradable by the retro-Diels-Alder reaction under physiological conditions. The 4APM-HAFU (ratio 1:5) hydrogel formulation showed sustained release of bevacizumab > 400 days by a combination of diffusion, swelling, and degradation. A bioassay showed that the released bevacizumab remained bioactive. The hydrogel platform described in this study offers high potential for the sustained release of therapeutic antibodies to treat ocular diseases.
Topics & Concepts
Hyaluronic acidSelf-healing hydrogelsBevacizumabPEG ratioChemistryIn situDiels–Alder reactionCombinatorial chemistryPolymer chemistryOrganic chemistryMedicineSurgeryChemotherapyFinanceEconomicsAnatomyCatalysisAdvanced Drug Delivery SystemsOcular Surface and Contact LensSupramolecular Self-Assembly in Materials