期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 17, 页码 8558-8565出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm16425f
关键词
-
资金
- Engineering and Physical Sciences Research Council [EP/H005625/1]
- Biotechnology and Biological Sciences Research Council [BB/C515855/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/H005625/1] Funding Source: researchfish
- EPSRC [EP/H005625/1] Funding Source: UKRI
Cationic polyrotaxanes for gene delivery have been generated by threading amine-functional cyclodextrins (CDs) onto polyionene cores. These polymers were used to condense nucleic acids into polyelectrolyte complexes of <200 nm radius. Gel retardation and dye exclusion assays demonstrated tighter binding of CD-threaded polyrotaxanes compared to their non-threaded ionene counterparts. Atomic force microscopy showed the presence of well-condensed polyrotaxane-DNA complexes at nitrogen : phophorus (N : P) ratios >1 : 1 and complexes with partly uncondensed DNA at lower N : P ratios. Transfection assays using a luciferase reporter gene in three representative cell lines indicated that a hexamino-CD-based polyrotaxane was an effective nucleic acid delivery agent, inducing comparable and even superior transgene expression levels as poly(ethyleneimine) (PEI). Furthermore, the polyrotaxanes were better tolerated by all three cell lines than PEI as reported by the MTT metabolic activity assay. These data indicate that polyrotaxanes of this type are promising gene delivery agents both in vitro and in vivo.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据