Quaternized chitosan (QCS)/poly (aspartic acid) nanoparticles as a protein drug-delivery system

被引：47

作者：

Wang, Tie Wei ^{[1
,2
]}

Xu, Qing ^{[1
]}

Wu, Yan ^{[1
]}

Zeng, Ai Jun ^{[2
]}

Li, Mingjun ^{[3
]}

Gao, Hongxia ^{[3
]}

机构：

[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

[2] China Agr Univ, Beijing 100083, Peoples R China

[3] Jiamusi Univ, Affiliated Hosp 1, Jiamusi 154002, Peoples R China

来源：

CARBOHYDRATE RESEARCH | 2009年 / 344卷 / 07期

基金：

国家高技术研究发展计划(863计划);

关键词：

Quaternized chitosan; Poly (aspartic acid); Nanoparticles; Protein; Delivery; BIODEGRADABLE POLYMERIC MICELLES; BLOCK-COPOLYMER; IN-VITRO; ENHANCEMENT; ABSORPTION; CARRIERS;

D O I：

10.1016/j.carres.2009.02.018

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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 0.1 M phosphate buffer solution (PBS, pH 7.4), while the release was slow in 0.1 M HCl (pH 1.2). The results showed that the new QCS/poly (aspartic acid) nanoparticles have a promising potential in protein delivery system. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：908 / 914

页数：7

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