Synthesis and characterization of methoxy poly(ethylene glycol)-O-chitosan-polyethylenimine for gene delivery
Synthesis and characterization of methoxy poly(ethylene glycol)-O-chitosan-polyethylenimine for gene delivery
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用于基因递送的甲氧基聚乙二醇-O-壳聚糖-聚乙烯亚胺的合成和表征
DOI:
10.1016/j.carbpol.2010.02.018
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发表时间:
2010-06
影响因子:
11.2
通讯作者:
中科院分区:
文献类型:
--
作者:
A novel water-soluble chitosan (CS) derivative methoxy poly(ethylene glycol)-O-chitosan-polyethylenimine (mPEG-O-CS-PEI), was synthesized. The synthesized intermediates and final product were characterized and confirmed by1H NMR and FT-IR spectra. The particle size and zeta potential of mPEG-O-CS-PEI/DNA complexes were 65nm and +28.5mV at the mass ratio of 20:1, respectively. Agarose gel electrophoresis study showed strong DNA binding ability of mPEG-O-CS-PEI. The transfection of L-02 cells proved that mPEG-O-CS-PEI/plasmid was significantly less toxic than PEI 35kDa and Lipofectin. The result of real-time quantitative PCR and GFP expression imaging showed that the transfection efficiency of mPEG-O-CS-PEI was significantly higher than PEI 35kDa and Lipofectin in L-02 cells (P<0.05). Therefore, mPEG-O-CS-PEI copolymer may be attractive cationic polymers for nonviral gene therapy.
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