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:
化学1区
文献类型:
--
作者:

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合成了一种新型水溶性壳聚糖(CS)衍生物甲氧基聚乙二醇-O-壳聚糖-聚乙烯亚胺(mPEG-O-CS-PEI)。合成的中间体和最终产物均通过1H NMR和FT-IR光谱进行了表征和确认。当mPEG-O-CS-PEI/DNA质量比为20:1时,复合物的粒径为65 nm,zeta电位为+28.5mV。琼脂糖凝胶电泳结果显示mPEG-O-CS-PEI具有较强的DNA结合能力。L-02细胞转染实验证明,mPEG-O-CS-PEI/质粒的毒性明显低于PEI 35 kDa和Lipofectin。荧光定量PCR和GFP表达成像结果显示,mPEG-O-CS-PEI转染L-02细胞的效率显著高于PEI 35 kDa和Lipofectin(P<0.05)。因此,mPEG-O-CS-PEI共聚物可能是非病毒基因治疗的有吸引力的阳离子聚合物。
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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