期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 75, 期 2, 页码 543-549出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2009.09.034
关键词
alpha,beta-Poly[(N-carboxybutyl)-L-aspartamide]; Camptothecin; Nanomicelles; Cytotoxicity; Stability; Solubility
资金
- National Natural Science Foundation of China [20504010]
- Chinese Ministry of Science and Technology [2007CB936104, 2009CB930000, 2009CB930300]
- Shanghai Municipality Commission for Special Project of Nanometer Science and Technology [0852nm03700, 0952nm05300]
- Shanghai Municipality Commission for Non-governmental International Corporation Project [09540709000]
This research is aimed to develop a nanomicelle delivery system in order to enhance the solubility and stability of camptothecin (CPT) in aqueous media. In this case, alpha,beta-poly[(N-carboxybutyl)-L-aspartamide] (PBAsp)-CPT was conjugated by the esterification between PBAsp and 20-OH of CPT, and hence used to fabricate nanomicelles with a particle size between the pore size of blood capillary in normal tissue and that in tumor tissue. It was worthy of note that the drug-loaded system of PBAsp-CPT nanomicelle improved the solubility and stability of CPT in aqueous media. However, with an increase of the CPT loading in PBAsp-CPT, the solubility sharply decreased. Meanwhile, the sizes of PBAsp-CPT nanomicelles showed a tendency of increase. Moreover, the drug release of PBAsp-CPT nanomicelles displayed a linear sustaining profile, and hence resulted in the essential decrease of cytotoxicity to L929 cell line. The assembled nanomicelles based on the PBAsp-CPT conjugates showed a great potential as polymer prodrug of tumor therapy, and the controlled nano-scale might achieve the passive tumor targeting. (C) 2009 Elsevier B.V. All rights reserved.
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