Property effecting and/or property exhibiting compositions for therapeutic and diagnostic uses
First Claim
1. A chemically modified double-stranded nucleic acid construct, wherein solely one strand of said construct comprises a modified nucleotide, a nucleotide analog, or a combination of the foregoing, wherein said modified nucleotide or nucleotide analog is covalently attached to a non-nucleic acid entity, wherein said non-nucleic acid entity is a polymer, wherein the unmodified strand of said construct when present in a cell is used as a template for the synthesis of a nucleic acid product having biological activity, and wherein said polymer is covalently attached to said modified nucleotide on the base moiety.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides an array of compositions useful for effecting and/or exhibiting changes in biological functioning and processing within cells and in biological systems containing such cells. In effect, these compositions combine chemical modifications and/or ligand additions with biological functions. The chemical modifications and/or ligand additions provide additional characteristics to the compositions without interfering substantially with their biological function. Such additional characteristics include nuclease resistance, targeting specific cells or specific cell receptors localizing to specific sites within cells and augmenting interactions between the compositions and target cells of interest as well as decreasing such interactions when desired. Also provided by the present invention are processes and kits.
-
Citations
13 Claims
- 1. A chemically modified double-stranded nucleic acid construct, wherein solely one strand of said construct comprises a modified nucleotide, a nucleotide analog, or a combination of the foregoing, wherein said modified nucleotide or nucleotide analog is covalently attached to a non-nucleic acid entity, wherein said non-nucleic acid entity is a polymer, wherein the unmodified strand of said construct when present in a cell is used as a template for the synthesis of a nucleic acid product having biological activity, and wherein said polymer is covalently attached to said modified nucleotide on the base moiety.
- 4. A chemically modified double-stranded nucleic acid construct, wherein solely one strand of said construct comprises a modified nucleotide, a nucleotide analog, or a combination of the foregoing, wherein said modified nucleotide or nucleotide analog is covalently attached to a non-nucleic acid entity that is a polymer, wherein the unmodified strand of said construct when present in a cell is used as a template for the synthesis of a nucleic acid product having biological activity, and wherein said polymer is selected from a polycation, a matrix protein, a lectin, or a protein that functions in integration of nucleic acid into DNA.
- 8. A chemically modified double-stranded nucleic acid construct, wherein solely one strand of said construct comprises a modified nucleotide, a nucleotide analog, or a combination of the foregoing, wherein said modified nucleotide or nucleotide analog is covalently attached to a non-nucleic acid entity, wherein said non-nucleic acid entity is a polymer, wherein the unmodified strand of said construct when present in a cell is used as a template for the synthesis of a nucleic acid product having biological activity, and wherein said polymer is covalently attached to said modified nucleotide on the sugar moiety.
- 11. A chemically modified double-stranded nucleic acid construct wherein a first strand of said construct comprises more than one modified nucleotide, nucleotide analog, or combination thereof, wherein a second strand of said construct lacks said modified nucleotide, nucleotide analog or combination thereof, wherein said second strand is hybridized to said first strand and wherein said modified nucleotide or nucleotide analog is covalently attached to a non-nucleic acid entity, wherein said non-nucleic acid entity is a polymer, wherein the unmodified strand of said construct when present in a cell is used as a template for the synthesis of a nucleic acid product having biological activity.
Specification