Other reported cationic lipid compounds include those which have been conjugated to a variety of moieties including, for example, carboxyspermine which has been conjugated to one of two types of lipids and includes compounds such as 5-carboxyspermylglycine dioctaoleoylamide (DOGS) and dipalmitoyl-phosphatidyletanolamine 5-carboxyspermyl-amide (IDPPES) (See, e.g. Behr et al., U.S. Pat. No. 5,17