| 摘要 |
A starch-based Amygel for the controlled delivery of a biologically active agent is described. The Amygel comprises a dispersed phase, and a dispersion medium consisting substantially of an organic solvent. The dispersed phase includes a polymeric network comprising a hydrolyzable polymeric substance derived from starch, and a cross-linker. In various embodiments, the polymeric starch-derived network includes amylose, amylopectin, soluble starch or a combination thereof. The cross-linker is a molecule having at least two carboxyl moieties. The hyrogel is biocompatible and biodegradable, and suitable for loading with biologically active agents including small molecule therapeutics, macromolecules such as proteins, polysaccharides and nucleic acids. Upon administration to a host animal, the Amygel biodegrades, releasing as degradation products only naturally-occurring sugar molecules that are non-toxic and non-immunogenic to the host.
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