Substituted purines and oligonucleotide cross-linking
First Claim
1. A method of forming a crosslinked oligonucleotide comprising the steps of:
- providing an oligonucleotide having a first crosslinking site and a second crosslinking site, wherein said first crosslinking site is located on a nucleobase of said oligonucleotide, and said second crosslinking site is located on a sugar moiety of said nucleobase; and
reacting said first crosslinking site with said second crosslinking site to form said crosslinked nucleotide;
wherein said first and second crosslinking sites each consist of either (a) a space spanning arm having a reactive functionality thereon;
or (b) a reactive functionality.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention is directed to novel purine-based compounds for inclusion into oligonucleotides. The compounds of the invention, when incorporated into oligonucleotides are especially useful as “antisense” agents—agents that are capable of specific hybridization with a nucleotide sequence of an RNA. The compounds of the invention may also be used for cross-linking oligonucleotides. Oligonucleotides are used for a variety of therapeutic and diagnostic purposes, such as treating diseases, regulating gene expression in experimental systems, assaying for RNA and for RNA products through the employment of antisense interactions with such RNA, diagnosing diseases, modulating the production of proteins, and cleaving RNA in site specific fashions. The compounds of the invention include novel heterocyclic bases, nucleosides, and nucleotides. when incorporated into oligonucleotides, the compounds of the invention can be useful for modulating the activity of RNA.
-
Citations
23 Claims
-
1. A method of forming a crosslinked oligonucleotide comprising the steps of:
-
providing an oligonucleotide having a first crosslinking site and a second crosslinking site, wherein said first crosslinking site is located on a nucleobase of said oligonucleotide, and said second crosslinking site is located on a sugar moiety of said nucleobase; and
reacting said first crosslinking site with said second crosslinking site to form said crosslinked nucleotide;
wherein said first and second crosslinking sites each consist of either (a) a space spanning arm having a reactive functionality thereon;
or(b) a reactive functionality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
each of said plurality of crosslinking sites located on said nucleobases of said oligonucleotide are reacted with each of said a plurality of crosslinking sites located on said sugar moieties of said nucleobase to form said crosslinked nucleotide.
-
-
9. A method of fixing the secondary structure of an oligonucleotide comprising the steps of:
-
providing an oligonucleotide having a first crosslinking site and a second crosslinking site, wherein said first crosslinking site is located on a nucleobase of said oligonucleotide, and said second crosslinking site is located on a sugar moiety of said nucleobase; and
reacting said first crosslinking site with said second crosslinking site to form said crosslinked nucleotide;
wherein said first and second crosslinking sites each consist of either (a) a space spanning arm having a reactive functionality thereon;
or(b) a reactive functionality. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
each of said plurality of crosslinking sites located on said nucleobases of said oligonucleotide are reacted with each of said a plurality of crosslinking sites located on said sugar moieties of said nucleobase to form said crosslinked nucleotide.
-
-
17. A method of fixing an oligonucleotide in a stem loop structure comprising the steps of:
-
providing an oligonucleotide having a first crosslinking site and a second crosslinking site, wherein said first crosslinking site is located on a nucleobase of said oligonucleotide, and said second crosslinking site is located on a sugar moiety of said nucleobase; and
reacting said first crosslinking site with said second crosslinking site to form said stem loop structure;
wherein said first and second crosslinking sites each consist of either (a) a space spanning arm having a reactive functionality thereon;
or(b) a reactive functionality. - View Dependent Claims (18, 19, 20, 21, 22, 23)
each of said plurality of crosslinking sites located on said nucleobases of said oligonucleotide are reacted with each of said a plurality of crosslinking sites located on said sugar moieties of said nucleobase to form said crosslinked nucleotide.
-
Specification