Document Detail

Quaternary complexes composed of plasmid DNA/protamine/fish sperm DNA/stearic acid grafted chitosan oligosaccharide micelles for gene delivery.
MedLine Citation:
PMID:  21035503     Owner:  NLM     Status:  In-Data-Review    
Quaternary complexes with condensed core of plasmid DNA, protamine, fish sperm DNA and shell of stearic acid grafted chitosan oligosaccharide (CSO-SA), were prepared. The CSO-SA could self-assemble to form nano-sized micelles in aqueous solution and demonstrated excellent internalization ability of tumor cells. Dynamic light scattering (DLS) measurement and transmission electrostatic microscope (TEM) images showed that quaternary complexes had spherical shape with about 25nm number average diameter, and the size of quaternary complexes was smaller than that of CSO-SA micelles and CSO-SA micelles/plasmid DNA binary complexes. The transfection efficiencies of quaternary complexes on HEK293 and MCF-7 cells increased with incubation time, and were significantly higher than that of CSO-SA micelles/plasmid DNA binary complexes. The optimal transfection efficiency of quaternary complexes on HEK293 and MCF-7 cells measured by flow cytometer after 96h was 23.82% and 41.43%, respectively. Whereas, the transfection efficiency of Lipofectamine™ 2000 on HEK293 and MCF-7 cells after 96h was 32.45% and 33.23%, respectively. The data of luciferease activity measurement showed that the optimal ratio of plasmid DNA:fish sperm DNA:protamine:CSO-SA was 1:1:5:5. The results indicated that the present quaternary complexes were potential non-viral gene delivery system.
Yong-Zhong Du; Ping Lu; Hong Yuan; Jian-Ping Zhou; Fu-Qiang Hu
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Publication Detail:
Type:  Journal Article     Date:  2010-10-28
Journal Detail:
Title:  International journal of biological macromolecules     Volume:  48     ISSN:  1879-0003     ISO Abbreviation:  Int. J. Biol. Macromol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7909578     Medline TA:  Int J Biol Macromol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  153-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
College of Pharmaceutical Science, Zhejiang University, 388 Yuhangtang Road, Hangzhou 310058, PR China.
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