摘要:
Compositions comprising first and second oligomers are provided wherein at least a portion of the first oligomer is capable of hybridizing with at least a portion of the second oligomer, at least a portion of the first oligomer is complementary to and capable of hybridizing to a selected target nucleic acid, and at least one of the first or second oligomers includes a modified sugar and/or backbone modification. In some embodiments the modification is a 2′ substituent group on a sugar moiety that is not H or OH. Oligomer/protein compositions are also provided comprising an oligomer complementary to and capable of hybridizing to a selected target nucleic acid and at least one protein comprising at least a portion of an RNA-induced silencing complex (RISC), wherein at least one nucleotide of the oligomer has a modified sugar and/or backbone modification.
摘要:
Compositions comprising first and second oligomers are provided wherein at least a portion of the first oligomer is capable of hybridizing with at least a portion of the second oligomer, at least a portion of the first oligomer is complementary to and capable of hybridizing to a selected target nucleic acid, and at least one of the first or second oligomers includes a modified sugar and/or backbone modification. In some embodiments the modification is a 2′-F substituent group on a sugar moiety. Oligomer/protein compositions are also provided comprising an oligomer complementary to and capable of hybridizing to a selected target nucleic acid and at least one protein comprising at least a portion of an RNA-induced silencing complex (RISC), wherein at least one nucleoside of the oligomer has a modified sugar and/or backbone modification.
摘要:
The present invention provides compositions comprising at least one oligomeric compound comprising an alternating motif and further include a region that is complementary to a nucleic acid target. The compositions are useful for targeting selected nucleic acid molecules and modulating the expression of one or more genes. In preferred embodiments the compositions of the present invention hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA. The present invention also provides methods for modulating gene expression.
摘要:
The present invention provides compositions comprising at least one oligomeric compound comprising an alternating motif and further include a region that is complementary to a nucleic acid target. The compositions are useful for targeting selected nucleic acid molecules and modulating the expression of one or more genes. In preferred embodiments the compositions of the present invention hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA. The present invention also provides methods for modulating gene expression.
摘要:
The present invention provides compositions comprising at least one oligomeric compound comprising an alternating motif and further include a region that is complementary to a nucleic acid target. The compositions are useful for targeting selected nucleic acid molecules and modulating the expression of one or more genes. In preferred embodiments the compositions of the present invention hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA. The present invention also provides methods for modulating gene expression.
摘要:
The present invention provides compositions and methods for the optimization of cleavage of RNA species by RNase H. In some embodiments, the invention provides oligonucleotides that possess two or more regions of differing conformation, and at least one transitional nucleobase positioned between the regions that is capable of modulating transfer of the helical conformation characteristic of the region bound to the 3′hydroxy thereof, to the region bound to the 5′ hydroxyl thereof.
摘要:
The present invention provides compositions and methods for the optimization of cleavage of RNA species by RNase H. In some embodiments, the invention provides oligonucleotides that possess two or more regions of differing conformation, and at least one transitional nucleobase positioned between the regions that is capable of modulating transfer of the helical conformation characteristic of the region bound to the 3′hydroxy thereof, to the region bound to the 5′ hydroxyl thereof.
摘要:
The present invention provides double stranded compositions wherein the first strand is modified to have a particular motif and the second strand is modified a selected motif. More particularly, the present compositions comprise an antisense strand that is modified to have a positional/full motif and the sense strand is modified to have an alternating motif, a hemimer motif, a blockmer motif, a gapped motif, a positional motif, a positional/full motif or a fully modified motif. Each strand further comprises one or more phosphorothioate internucleoside linkage. The compositions are useful for targeting selected nucleic acid molecules and modulating the expression of one or more genes.
摘要:
The present disclosure describes tetrahydropyran nucleoside analogs, oligomeric compounds prepared therefrom and methods of using the oligomeric compounds. More particularly, tetrahydropyran nucleoside analogs are provided, having one or more chiral substituents, that are useful for enhancing properties of oligomeric compounds including nuclease resistance and binding affinity. In some embodiments, the oligomeric compounds provided herein hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA.
摘要:
Provided herein are novel 5′-(S)—CH3 substituted bicyclic nucleosides, oligomeric compounds prepared therefrom and methods of using the oligomeric compounds. More particularly, the furanose ring of each of the novel 5′-(S)—CH3 substituted bicyclic nucleosides includes a 2′ to 4′ bridging group. The 5′-(S)—CH3 substituted bicyclic nucleosides are expected to be useful for enhancing one or more properties of the oligomeric compounds they are incorporated into such as for example increasing the binding affinity. In certain embodiments, the oligomeric compounds provided herein hybridize to a portion of a target RNA resulting in loss of normal function of the target RNA.