摘要:
The invention relates to compositions and methods for site-specific delivery of nucleic acids by combining them with targeting ligands and endosomolytic components.
摘要:
The present invention provides iRNA agent including at least one monomer having the structure shown in formula (I′) wherein: A and B are each independently for each occurrence O, N(RN) or S; X is H, a protecting group, a phosphate group, a phosphodiester group, an activated phosphate group, an activated phosphite group, a phosphoramidite, a solid support, —P(Z′)(Z″)O-nucleoside, —P(Z′)(Z″)O-oligonucleotide, a lipid, a PEG, a steroid, a polymer, —P(Z′)(Z″)O-L6-Q′-L7-OP(Z′″)(Z′″″)O-oligonucleotide, a nucleotide, or an oligonucleotide; Y is H, a protecting group, a phosphate group, a phosphodiester group, an activated phosphate group, an activated phosphite group, a phosphoramidite, a solid support, —P(Z′)(Z″)O-nucleoside, —P(Z′)(Z″)O-oligonucleotide, a lipid, a PEG, a steroid, a lipophile, a polymer, —P(Z′)(Z″)O-L6-Q′-L7-OP(Z′″)(Z′″″)O-oligonucleotide, a nucleotide, or an oligonucleotide; R is folate, a folate analog a folate mimic or a folate receptor binding ligand; L6 and L7 are each independently for each occurrence —(CH2)n—, —C(R′)(R″)(CH2)n—, —(CH2)nC(R′)(R″)—, —(CH2CH2O)mCH2CH2—, or —(CH2CH2O)mCH2CH2NH—; Q′ is NH, O, S, CH2, C(O)O, C(O)NH, —NH—CH(Ra)—C(O)—, —C(O)—CH(Ra)—NH—, CO, where Ra is H or amino acid side chain; R′ and R″ are each independently H, CH3, OH, SH, NH2, NH(Alkyl=Me, Et, Pr, isoPr, Bu, Bn) or N(diAlkyl=Me2, Et2, Bn2); Z′, Z″, Z′″ and Z″″ are independently O or S; n represent independently for each occurrence 1-20; and m represent independently for each occurrence 0-50.
摘要:
Disclosed herein are lipid compositions comprising a cationic lipid of formula (I), a neutral lipid, a sterol and a PEG or PEG-modified lipid, wherein formula (I) is (F). Also disclosed are methods of producing the cationic lipid of formula (I).
摘要:
The invention features a oligonucleotide of formula I, or pharmaceutically acceptable salts, or prodrugs thereof: which are capable of inducing an anti-viral or an antibacterial response, in particular, the induction of type I IFN, IL-18 and/or IL-1β by binding to RIG-I. The invention relates to methods of making and using modified oligonucleotide comprising at least one triphosphate or analogs thereof. The invention further relates to methods for treating various disorders and diseases such as viral infections, bacterial infections, parasitic infections, tumors, allergies, autoimmune diseases, immunodeficiencies and immunosuppression.
摘要:
The present invention provides nucleosides of formula (1) and oligonucleotides comprising at least one nucleoside of formula (2): Another aspect of the invention relates to a method of inhibiting the expression of a gene in cell, the method comprising (a) contacting an oligonucleotide of the invention with the cell; and (b) maintaining the cell from step (a) for a time sufficient to obtain degradation of the mRNA of the target gene.
摘要:
This invention relates to a method of modulating the expression of a target gene in an organism comprising administering an iRNA agent, wherein the iRNA comprises at least one 2′-deoxy-2′-fluoro (2′-F) nucleotide in the antisense strand and at least one modified nucleotide in the sense strand. The invention also relates to compositions comprising a single-stranded oligonucleotide that contains at least one 2′-deoxy-2′-fluoro (2′-F) nucleotide. siRNA molecule containing these oligonucleotides have decreased immunogenicity.
摘要:
One aspect of the present invention relates to a ribonucleoside substituted with a phosphonamidite group at the 3′-position. In certain embodiments, the phosphonamidite is an alkyl phosphonamidite. Another aspect of the present invention relates to a double-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a non-phosphate linkage occurs in only one strand. In certain embodiments, a non-phosphate linkage occurs in both strands. In certain embodiments, a ligand is bound to one of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, a ligand is bound to both of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, the oligonucleotide strands comprise at least one modified sugar moiety. Another aspect of the present invention relates to a single-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a ligand is bound to the oligonucleotide strand. In certain embodiments, the oligonucleotide comprises at least one modified sugar moiety.
摘要:
One aspect of the present invention relates to a ribonucleoside substituted with a phosphonamidite group at the 3′-position. In certain embodiments, the phosphonamidite is an alkyl phosphonamidite. Another aspect of the present invention relates to a double-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a non-phosphate linkage occurs in only one strand. In certain embodiments, a non-phosphate linkage occurs in both strands. In certain embodiments, a ligand is bound to one of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, a ligand is bound to both of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, the oligonucleotide strands comprise at least one modified sugar moiety. Another aspect of the present invention relates to a single-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a ligand is bound to the oligonucleotide strand. In certain embodiments, the oligonucleotide comprises at least one modified sugar moiety.