Abstract
In this investigation, the fabrication, physico-chemical and biological characterization of a novel smart hydrogel had been evaluated for its potentials in effective controlling protein delivery. The hydrophilic pachyman-based hydrogel was generated facilely by crosslinking hydrosoluble carboxymethyl pachyman (CMP) with epichlorohydrin (ECH). The ECH concentration possessing maximum (99.7%) encapsulation efficiency and the most appropriate swelling characteristics was found to be 1.25% (w/v). The resultant hydrogel exhibited swelling ratios most favorable for drug release in simulated intestinal media. It could release two model protein drugs (bovine serum albumin and lysozyme) in the controlled manner and with full preservation of the protein stability and enzymatic activity. Importantly, the ECH-CMP hydrogel was confirmed to be biocompatible and biodegradable. From these findings, we were able to conclude that the synthesized pachyman-based hydrogel would be a promising delivery carrier candidate for site-specific delivery of protein drugs.
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