期刊
ACS NANO
卷 5, 期 9, 页码 6886-6893出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn200901g
关键词
drug delivery; microparticles; polyelectrolytes; vaccines; dendritic cells
类别
资金
- Ghent University [BOF09/01M00709]
- FWO
Here we present a single-step all-aqueous approach to encapsulate biomolecules such as enzymes and proteins into stable microreactors. Key In this method is the use of spray-drying of the biomolecules of interest in combination with oppositely. charged,polyelectrolytes and mannitol as the sacrificial template. Remarkably, upon spray-drying in the presence of polyelectrolyte, mannitol crystallization is suppressed and the obtained amorphous mannitol offers enhanced preservation of the biomolecules' activity. Moreover, the use of mannitol allows the formation of nanopores within the microparticles upon rehydration of the microparticles in aqueous medium and subsequent dissolution, of the mannitol. The oppositely charged polyelectrolytes provide a polymeric framework which stabilizes the microparticles upon rehydration. The versatility of this approach Is demonstrated using horseradish peroxidase as the model enzyme and ovalbumin as the model antigen.
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