Abstract
Phenylboronic acid (PBA)-based polymeric hydrogels have been widely considered as one of the most promising insulin delivery system to replace the frequent insulin injections. However, these hydrogels, mostly based on a variety of PBA-containing acrylamide monomers, are still far from clinical reality. Building upon a unique particle-hydrogel hybrid platform, herein we report a novel implantable insulin storage and delivery system with multifunctionalities including fast glucose-sensitiveness at physiological pH, shear-thinning behavior for injection, tissue-adhesive function for long-lasting adherence, biodegradable materials for safe use and well-controlled insulin release. These unique functions were demonstrated through research both in vitro and in vivo. In addition, the preparation of the formulation was simple, and thus it had great scalability and reproducibility for practical use.
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