Synthesis and Characterization of Novel Cationic Lipids Derived from Thio Galactose
作者:Weihong Qiao、Min Zhou、Limei Luo
DOI:10.1007/s11743-013-1474-0
日期:2014.3
Two double chain cationiclipids QAS Cn‐2‐S (n = 12, 14) derivedfromthiogalactose and carbamate‐linkage tertiary amine were synthesized and their structures were confirmed by MS, TOF‐MS, 1H NMR and 13C NMR. The QAS C12‐2‐S revealed superior surface activity compared with QAS C14‐2‐S with lower CMC and γCMC. Though Lipo C12‐2‐S displayed large average particle‐size with high polydispersity, positive
合成了两个由硫代半乳糖和氨基甲酸酯键联的叔胺衍生的双链阳离子脂质QAS C n -2-S(n = 12,14),并通过MS,TOF-MS,1 H NMR和13 C NMR证实了其结构。的QASÇ 12与QAS则为C -2-S显示优异的表面活性14 -2-S具有较低CMC和γ CMC。虽然前列Ç 12 -2-S显示大的平均粒径的高多分散性,带正电荷的脂微球Ç Ñ -2-S可与带负电的DNA进行组合,也负染TEM图像证实囊泡的形成。以上所有证明Lipo C n‐2‐S有助于基因转染。
Synthesis of carbamate-linked lipids for gene delivery
Series of lipids 1a-d and 2a,b, with carbamate linkages between hydrocarbon chains and ammonium or tertiary amine head, which were pH sensitive, were synthesized for liposome-mediated gene delivery. The variable length of carbon chains and quaternary ammonium or neutral tertiary amine heads allowed to find the structure-function relationship of how these factors affect cationic lipids on gene delivery performance. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis and Characterization of Carbamate‐Linked Cationic Lipids with Hydroxyethyl Group
AbstractA series of cationic lipids with a carbamate linkage and a hydroxyethyl head group were designed and synthesized for gene delivery. All of the products were characterized by 1H NMR and MS. Cationic liposomes were prepared using the cationic lipid and the liposome states were studied by TEM and Nano Particle Size and Potential Analyzer. Liposomes were approximately spherical structures, the mean diameter was about 150 nm, the zeta‐potential was about 40 mV.