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US 5,279,833 AGranted
Liposomal transfection of nucleic acids into animal cells
AssigneeYale University
InventorJohn K. Rose
Life of this patent
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Abstract
A reagent for introducing a nucleic acid into an animal cell. The reagent comprises (a) a neutral lipid such as dioleoylphosphatidylethanolamine and (b) a cationic lipid selected from the group consisting of an ammonium salt such as dimethyldioctadecylammonium bromide or cetyldimethylethylammonium bromide, an amine such as stearylamine, and a benzethonium salt such as methylbenzethonium chloride
Claims11
A liposome for introducing a nucleic acid into an animal cell comprising
- (a) a neutral lipid selected from the group consisting of lecithin, lysolecithin, lysophosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, sphinogomyelin, cephalin, cardiolipin, phosphatidic acid, cerebrosides, dioleoylphosphatidylcholine, dipalmitoylphosphatidylcholine, dioleoylphosphatidylglycerol, dipalmitoylphosphatidylglycerol, palmitoyloleoylphosphatidylcholine, palmitoyloleoylphosphatidylethanolamine, diheptadecanoylphosphatidylethanolamine, dilauroylphosphatidylethanolamine, dimyristoylphosphatidylethanolamine, distearoylphosphatidylethanolamine, beta-linoleoyl-gamma-palmitoylphosphatidylethanolamine and beta-oleoyl-gamma-palmitoylphosphatidylethanolamine, and
- (b) a cationic lipid selection from the group consisting of dimethyldioctadecylammonium bromide, cetylidimethylethylammonium bromide, stearylamine and methylbenzethonium chloride, wherein the weight ratio of the cationic lipid to the neutral lipid is 6:30 to 12:30.
Dependencies are inferred from the claim text.