Aqueous sec analysis of cationic polymers as gene carriers

Aqueous sec analysis of cationic polymers as gene carriers
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作为基因载体的阳离子聚合物的水相秒分析

DOI:
10.1007/s10118-011-1060-8
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发表时间:
2011-05
影响因子:
4.3
通讯作者:
Zhuo, Ren-xi
Zhuo, Ren-xi
中科院分区:
化学2区
文献类型:
--
作者:
Jiang, Xu-lin;Chu, Yan-feng;Liu, Jia;Zhang, Guang-yan;Zhuo, Ren-xi

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阳离子聚合物作为非病毒基因载体已受到广泛关注。结合Shodex OHpak SB色谱柱,对用于基因传递的含二硫化物的聚乙烯亚胺(PEI)衍生物进行了排阻色谱(SEC)分析。在流动相中加入乙腈可以抑制聚合物分析物与固定相之间的疏水相互作用。通过在线SEC-MALS(多角度光散射)/RI(折射率检测器)直接测定阳离子聚合物的绝对分子量和分布。结果表明,该方法对用于基因传递的含二硫化物的PEI衍生物进行了良好的SEC分离,条带宽度很小。
Cationic polymers have been receiving much attention as non-viral gene vectors. The aqueous mobile phase was optimized in combination with Shodex OHpak SB columns for size-exclusion chromatography (SEC) analysis of disulfide-containing poly(ethylene imine) (PEI) derivatives used in gene delivery. Addition of acetonitrile in mobile phase was shown to be able to suppress the hydrophobic interactions between polymer analytes and the stationary phase. The absolute molecular weights and distributions of the cationic polymers were determined directly from online SEC-MALS (multi-angle light scattering)/RI (refractive index detector). The results demonstrate that a good SEC separation of disulfide-containing PEI derivatives used in gene delivery with little band broadening was achieved.
DOI: 10.1021/bc060200l
发表时间: 2007-01-01
影响因子: 4.7
作者:
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