Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/72089
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Type: Journal article
Title: Exploring N-Imadozolyl-O-Carboxymethyl Chitosan for High Performance Gene Delivery
Author: Shi, B.
Shen, Z.
Zhang, H.
Bi, J.
Dai, S.
Citation: Biomacromolecules, 2012; 13(1):146-153
Publisher: American Chemical Society
Issue Date: 2012
ISSN: 1525-7797
1526-4602
Statement of
Responsibility: 
Bingyang Shi, Zheyu Shen, Hu Zhang, Jingxiu Bi and Sheng Dai
Abstract: Chitosan shows good biocompatibility and biodegradability, but the poor water solubility and low transfection efficiency hinder its applications as a gene delivery vector. We here report the detailed synthesis and characterization of a novel ampholytical chitosan derivative, N-imidazolyl-O-carboxymethyl chitosan (IOCMCS), used for high performance gene delivery. After chemical modification, the solubility of the resulting polymer is enhanced, and the polymer is soluble in a wide pH range (4-10). Gel electrophoresis study reveals the strong binding ability between plasmid DNA and the IOCMCS. Moreover, the IOCMCS does not induce remarkable cytotoxicity against human embryonic kidney (HEK293T) cells. The cell transfection results with HEK293T cells using the IOCMCS as gene delivery vector demonstrate the high transfection efficiency, which is dependent on the degree of imidazolyl substitution. Therefore, the IOCMCS is a promising candidate as the DNA delivery vector in gene therapy due to its high solubility, high gene binding capability, low cytotoxicity, and high gene transfection efficiency.
Keywords: Humans; Escherichia coli; Chitosan; DNA; Transfection; Materials Testing; Genetic Vectors; Plasmids; Hydrogen-Ion Concentration; Solubility; HEK293 Cells; Genetic Therapy
Rights: Copyright © 2011 American Chemical Society
RMID: 0020115976
DOI: 10.1021/bm201380e
Grant ID: http://purl.org/au-research/grants/arc/DP110102877
Appears in Collections:Chemical Engineering publications

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