制备 d'une serie delipides 可聚合成分 un groupe d'espacement Hydrophile entre le groupe reactif et la structure amphiphile principale。Etude des coches monomoleculaires, des liposomes et des coches multimoleculaires forees a partir de ces composes
Zwitterionic sulfobetaine lipids that form vesicles with salt-dependent thermotropic properties
作者:Emily K. Perttu、Francis C. Szoka
DOI:10.1039/c1cc15804j
日期:——
We describe a class of zwitterionic sulfobetaine (SB) lipids with fascinating salt-dependent properties. SB lipids are zwitter-neutral across a broad pH range; however they have negative surface potentials in the presence of anions and two salt-dependent transition temperatures. These new SB lipids provide insight on the role of charge orientation at the membrane interface and may be useful components in drug delivery systems.
Sulfated quaternary amine lipids: a new class of inverse charge zwitterlipids
作者:Vincent J. Venditto、Aaron Dolor、Aditya Kohli、Stefan Salentinig、Ben J. Boyd、Francis C. Szoka
DOI:10.1039/c4cc02866j
日期:——
Charge inverted zwitterionic sulfated lipids have exceptionally high transition temperatures and assemble into lipid aggregates when dispersed in aqueous solutions.
带电反转的双性离子硫酸化脂质具有异常高的转变温度,并且在水溶液中分散时会聚集成脂质聚集体。
Methods and compositions for the efficient delivery of therapeutic agents to cells and animals
申请人:Rana M. Tariq
公开号:US20070260055A1
公开(公告)日:2007-11-08
The present invention provides methods of carrying out the safe and reliable preparation of lipids comprising quaternary amines. Such lipids are especially suited for introducing therapeutic agents into cells or organisms. In particular, the lipids of the invention are suitable for the efficient transfer of gene therapy agents into mammalian cells or organisms in a cell type specific or tissue specific manner.
Lipids and lipid assemblies comprising transfection enhancer elements
申请人:Panzner Steffen
公开号:US20080306153A1
公开(公告)日:2008-12-11
Lipid assemblies, such as liposomes, comprising transfection enhancer elements (TEE's), which are complexed with the lipid assemblies by means of ionic interactions, or lipids incorporating such TEE's are disclosed for enhancing the fusogenicity of the lipid assemblies. The TEE's have the formula:
hydrophobic moiety-pH sensitive hydrophilic moiety (II)
The pH sensitive hydrophilic moiety of each TEE is a weak acid having a pka of between 2 and 6 or a zwitterionic structure comprising a combination of acidic groups with weak bases having a pKa of between 3 and 8. Lipids incorporating one or more such TEEs have the formula (I):
Lipid moiety-[Hydrophobic moiety-pH sensitive hydrophilic moiety] (I)