Gene delivery system
First Claim
Patent Images
1. A composition comprising solid nanospheres of less than 3 μ
- m for gene delivery to cells, comprising a polymeric cation and a polyanion, wherein the polyanion consists of nucleic acids, wherein the polymeric cation is a carbohydrate.
1 Assignment
0 Petitions
Accused Products
Abstract
A gene delivery system is made of enzymatically degradable polymeric cation and nucleic acid (DNA or RNA) nanospheres optionally with a linking moiety or a targeting ligand attached to the surface. The delivery system can be made by a simple method of coacervation. Targeting ligands can be attached to the nanosphere directly or via a linking moiety. The linkage design allows the attachment of any molecule onto the nanosphere surface including antibodies, cell adhesion molecules, hormones and other cell-specific ligands.
81 Citations
27 Claims
-
1. A composition comprising solid nanospheres of less than 3 μ
- m for gene delivery to cells, comprising a polymeric cation and a polyanion, wherein the polyanion consists of nucleic acids, wherein the polymeric cation is a carbohydrate.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
10. A method of forming solid nanospheres for gene delivery to specific target cells, comprising the step of:
forming nanospheres of less than 3 μ
m by coacervation of nucleic acids and a polymeric cation which is a carbohydrate.- View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
-
20. A method for introducing genes into cells, comprising the steps of:
incubating (a) cells to be transfected, in vitro with (b) solid nanospheres of less than 3 μ
m comprising polymeric cationic molecules and nucleic acid molecules, whereby the cells are transfected with the nucleic acid molecules, wherein the polymeric cationic molecules are carbohydrates.- View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
Specification