吡啶鎓两亲物已发现将 DNA 输送到真核细胞中的实际应用。已经设计了一种从(异)烟酰氯开始的通用合成方法,用于制备基于(生物)可降解酯的吡啶鎓两亲物,允许疏水部分和头部区域的结构变化。通过差示扫描量热法、透射电子显微镜和紫外线测量,已经确定了一些特性,包括水解行为。已使用真核 COS-7 细胞系测定了体外转染能力和毒性。
Mono- and dicationic short PEG and methylene dioxyalkylglycerols for use in synthetic gene delivery systems
作者:Christopher A. Hurley、John B. Wong、Jimmy Ho、Michele Writer、Scott A. Irvine、M. Jayne Lawrence、Stephen L. Hart、Alethea B. Tabor、Helen C. Hailes
DOI:10.1039/b719702k
日期:——
A range of monocationic and dicationic dioxyalkylglycerol cytofectins have been synthesised possessing methylene and short n-ethylene glycol spacers. The monocationic compounds were found to be effective in transfections when formulated as lipopolyplexes with peptide and DNA components, in particular with shorter PEG head groups which may have less effect on peptide targeting in the ternary complex.
Anti Gram-Positive Bacteria Activity of Synthetic Quaternary Ammonium Lipid and Its Precursor Phosphonium Salt
作者:Francesca Bacchetti、Anna Maria Schito、Marco Milanese、Sara Castellaro、Silvana Alfei
DOI:10.3390/ijms25052761
日期:——
designing a synthetic path where 1 would be an intermediate to achieve 6. All synthesized compounds were characterized by Fourier-transform infrared spectroscopy and Nuclear Magnetic Resonance. Additionally, potentiometric titrations of NH3+ groups 1 and 6 were performed to further confirm their structure by determining their experimental molecular weight. The antibacterial activities of 1 and 6 were
Asymmetric Synthesis of Dialkyloxy-3-alkylammonium Cationic Lipids
作者:Christopher A. Hurley、John B. Wong、Helen C. Hailes、Alethea B. Tabor
DOI:10.1021/jo035422g
日期:2004.2.1
The cationic diether-linked cytofectin DOTMA (available commercially as a mixture, Lipofectin comprised of DOTMA:DOPE, 1:1) and analogues including DIMRIE and DORIE are frequently used for in vitro and in vivo transfections. Despite this wide usage direct synthetic routes to the optical isomers have received little attention to date. Here we describe strategies to synthesize enantiomers of DOTMA and analogues, including an extremely concise procedure to the trimethylammonium salts. One strategy utilized N-protection, as the imine, with concomitant ether formation and deprotection during the workup. Methylation of the 1-amino-2,3-dialkyloxypropane then generated the trimethylammonium cationic lipids directly. This methodology was extended to synthesize a novel headgroup functionalized lipid. A second route was also developed using an alternative chiral synthon.
Novel Biodegradable Pyridinium Amphiphiles for Gene Delivery
作者:Dirk Pijper、Erna Bulten、Jarmila Šmisterová、Anno Wagenaar、Dick Hoekstra、Jan B. F. N. Engberts、Ron Hulst
DOI:10.1002/ejoc.200300361
日期:2003.11
Biodegradable synthetic cationic pyridinium-based amphiphiles (SAINTs) prove to be promising non-viral carrier systems for delivery of DNA into eukaryotic cells. Six novel SAINTs were synthesised from 3,5-pyridinedicarboxylic acid as starting material, with two ester groups as linkers between the cationic headgroup and the hydrophobic tails. The vesicle-forming properties of the amphiphiles were studied
Pyridiniumamphiphiles have found practical application for the delivery of DNA into eukaryotic cells. A general synthetic method starting from (iso)nicotinoyl chloride has been devised for the preparation of pyridiniumamphiphiles based on (bio)degradable esters, allowing structural variation both in the hydrophobic part and in the headgroup area. By means of differential scanning calorimetry, transmission
吡啶鎓两亲物已发现将 DNA 输送到真核细胞中的实际应用。已经设计了一种从(异)烟酰氯开始的通用合成方法,用于制备基于(生物)可降解酯的吡啶鎓两亲物,允许疏水部分和头部区域的结构变化。通过差示扫描量热法、透射电子显微镜和紫外线测量,已经确定了一些特性,包括水解行为。已使用真核 COS-7 细胞系测定了体外转染能力和毒性。