A cationic amphiphile for facilitating transport of a biologically active molecule into a cell has the structure A-F-D, in which A is a lipid anchor, D is a head group, and F is a spacer group having the structure described herein. A method for facilitating transport of a biologically active molecule into a cell comprises preparing a lipid mixture comprising a cationic amphiphile having structure A-F-D, preparing a lipoplex by contacting the lipid mixture with a biologically active molecule; and contacting the lipoplex with a cell, thereby facilitating transport of the biologically active molecule into the cell.
Synthesis and transfection properties of novel non-toxic monocationic lipids. variation of lipid anchor, spacer and head group structure
作者:Thomas Fichert、Anne Regelin、Ulrich Massing
DOI:10.1016/s0960-894x(00)00099-8
日期:2000.4
describes the synthesis and the transfectionproperties of novel monocationic non-toxic lipids. We have carried out structural variations in all three units of the transfectionlipid, the lipid anchor, the spacer moiety and the positively charged head group. Our results lead to the conclusion that systematic modification of structural subunits is a promising way to enhance the transfection efficiency