Process of making a compound by forming a polymer from a template drug
View Patent ↗A method of forming polymers in the presence of nucleic acid using template polymerization. These methods can be used for the delivery of nucleic acids, for condensing the nucleic acid, for forming nucleic acid binding polymers, for forming supramolecular complexes containing nucleic acid and polymer, and for forming an interpolyelectrolyte complex.
1. A method for delivering a polyion to a cell, comprising:
a) noncovalently associating molecules with the polyion in a solution outside a cell;
b) adding a crosslinker wherein said crosslinker contains a disulfide bond and forms covalent linkages between moieties of the molecules in the presence of the polyion, thereby forming a complex; and,
c) delivering the complex to the cell.
2. The method of claim 1 wherein the molecules are selected from the group consisting of polycations and polyanions.
3. The method of claim 2 further comprising attaching functional groups to the molecules.
4. The method of claim 3 wherein the functional groups consist of targeting groups.
5. The method of claim 4 wherein the targeting groups are selected from the group consisting of nuclear localizing signals, ligands that bind to cellular receptors, and releasing signals.
6. The method of claim 3 wherein the functional groups consist of interaction modifiers.
7. The method of claim 3 wherein attaching functional groups to the polymers changes the net charge of the complex.
8. The method of claim 1 wherein the polyion comprises a polyanion.
9. The method of claim 8 wherein the polyanion comprises nucleic acid.
10. The method of 9 wherein the molecules consists of polycations.
11. The method of claim 9 wherein the polycation consists of a polyamine.
12. The method of claim 11 wherein associating molecules with the nucleic acid condenses the nucleic acid.
13. The method of claim 11 wherein the polyamine is selected from the list consisting of: polylysine, polyethyleneimine, polyallylamine, and histone.
14. The method of claim 9 wherein associating molecules with the nucleic acid comprises:
a) condensing the nucleic acid with polycations to form a positively charge binary complex; and,
b) associating polyanions with the binary complex to form a ternary complex that is less positively charged than the binary complex.
15. The method of claim 1 wherein the disulfide bond consists of an activated disulfide bond.
16. The method of claim 15 wherein the activated disulfide bond is cleaved more rapidly than oxidized glutathione when measured under the same conditions.
17. The method of claim 15 wherein the activated disulfide bond is constructed from thiols in which at least one of the constituent thiols has a lower thiol pKa than glutathione thiol pKa when measured under the same conditions.