| Quaternized chitosan (QCS)/poly (aspartic acid) nanoparticles as a protein drug-delivery system. | |
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MedLine Citation:
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PMID: 19303066 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this study was to generate a new type of nanoparticles made of quaternized chitosan (QCS) and poly (aspartic acid) and to evaluate their potential for the association and delivery of protein drugs. QCS and poly (aspartic acid) were processed to nanoparticles via the ionotropic gelation technique. The size, polydispersity, zeta potential, and morphology of the nanoparticles were characterized. Entrapment studies of the nanoparticles were conducted using bovine serum albumin (BSA) as a model protein. The effects of the pH value of nanoparticles with different QCS/poly (aspartic acid) ratios, QCS molecular weight (MW), poly (aspartic acid) concentration, and BSA concentration on the nanoparticle size, the nanoparticle yield, and BSA encapsulation were studied in detail. Suitably pH value of nanoparticles with different QCS/poly (aspartic acid) ratios, moderate QCS MW, optimal concentration ratio of poly (aspartic acid), and QCS favored more nanoparticles formed and higher BSA encapsulation efficiency. The release of BSA from nanoparticles was pH-dependent. Fast release occurred in 0.1M phosphate buffer solution (PBS, pH 7.4), while the release was slow in 0.1M HCl (pH 1.2). The results showed that the new QCS/poly (aspartic acid) nanoparticles have a promising potential in protein delivery system. |
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Authors:
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Tie wei Wang; Qing Xu; Yan Wu; Ai jun Zeng; Mingjun Li; Hongxia Gao |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-02-25 |
Journal Detail:
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Title: Carbohydrate research Volume: 344 ISSN: 1873-426X ISO Abbreviation: Carbohydr. Res. Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-04-27 Completed Date: 2009-06-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043535 Medline TA: Carbohydr Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 908-14 Citation Subset: IM |
Affiliation:
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National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aspartic Acid
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chemistry* Chitosan / chemistry* Drug Delivery Systems* Hydrogen-Ion Concentration Microscopy, Electron, Transmission Molecular Structure Nanoparticles / chemistry* Polymers / chemical synthesis* Proteins / chemistry* Serum Albumin, Bovine / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Polymers; 0/Proteins; 0/Serum Albumin, Bovine; 56-84-8/Aspartic Acid; 9012-76-4/Chitosan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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