Gapped 2' modified oligonucleotides
First Claim
1. A method of modifying in vitro a sequence-specific ribonucleic acid, comprising contacting a test solution containing RNase HI and said sequence-specific ribonucleic acid with an oligonucleotide having a sequence of nucleotides under conditions that effect hybridization of said sequence-specific ribonucleic acid and said oligonucleotide, where at least one of said nucleotides is functionalized to increase nuclease resistance of the oligonucleotide, where a plurality of the nucleotides have a substituent group located thereon to increase binding affinity of the oligonucleotide to a complementary strand of sequence-specific ribonucleic acid, and where a plurality of the nucleotides have 2'"'"'-deoxy-erythro-pentofiranosyl sugar moieties.
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Accused Products
Abstract
Oligonucleotides and other macromolecules are provided that have increased nuclease resistance, substituent groups for increasing binding affinity to complementary strand, and sub-sequences of 2'"'"'-deoxy-erythro-pentofuranosyl nucleotides that activate RNase H enzyme. Such oligonucleotides and macromolecules are useful for diagnostics and other research purposes, for modulating protein in organisms, and for the diagnosis, detection and treatment of other conditions susceptible to antisense therapeutics.
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Citations
15 Claims
- 1. A method of modifying in vitro a sequence-specific ribonucleic acid, comprising contacting a test solution containing RNase HI and said sequence-specific ribonucleic acid with an oligonucleotide having a sequence of nucleotides under conditions that effect hybridization of said sequence-specific ribonucleic acid and said oligonucleotide, where at least one of said nucleotides is functionalized to increase nuclease resistance of the oligonucleotide, where a plurality of the nucleotides have a substituent group located thereon to increase binding affinity of the oligonucleotide to a complementary strand of sequence-specific ribonucleic acid, and where a plurality of the nucleotides have 2'"'"'-deoxy-erythro-pentofiranosyl sugar moieties.
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11. A method of modifying in vitro a sequence-specific ribonucleic acid, comprising contacting a test solution containing a RNase H and said sequence-specific ribonucleic acid with a compound comprising a plurality of units linked by covalent linkages in a sequence, wherein said contacting occurs under conditions that effect hybridization of said sequence-specific ribonucleic acid and said compound, and:
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said units are selected from nucleosides and nucleobases; said nucleosides are selected from α
-nucleosides, β
-nucleosides including 2'"'"'-deoxy-erythro-pentofuranosyl β
-nucleosides, 4'"'"'-thionucleosides, and carbocyclic-nucleosides;said nucleobases are selected from purin-9-yl and pyrimidin-1-yl heterocyclic bases; said linkages are selected from charged 3'"'"'-5'"'"' phosphorous, neutral 3'"'"'-5'"'"' phosphorous, charged 2'"'"'-5'"'"' phosphorous, neutral 2'"'"'-5'"'"' phosphorous or non-phosphorous linkages; and said sequence of linked units is divided into at least two regions, wherein; a first of said regions includes said nucleobases linked by non-phosphorous linkages and nucleobases that are attached to phosphate linkages via non-sugar tethering groups, and nucleosides selected from said α
-nucleosides linked by charged and neutral 3'"'"'-5'"'"' phosphorous linkages, said α
-nucleosides linked by charged and neutral 2'"'"'-5'"'"' phosphorous linkages, said α
-nucleosides linked by non-phosphorous linkages, said 4'"'"'-thionucleosides linked by charged and neutral 3'"'"'-5'"'"' phosphorous linkages, said 4'"'"'-thionucleosides linked by charged and neutral 2'"'"'-5'"'"' phosphorous linkages, said 4'"'"'-thionucleosides linked by non-phosphorous linkages, said carbocyclic-nucleosides linked by charged and neutral 3'"'"'-5'"'"' phosphorous linkages, said carbocyclic-nucleosides linked by charged and neutral 2'"'"'-5'"'"' phosphorous linkages, said carbocyclic-nucleosides linked by non-phosphorous linkages, said β
-nucleosides linked by charged and neutral 2'"'"'-5'"'"' linkages, and said β
-nucleosides linked by non-phosphorous linkages; anda second of said regions includes said 2'"'"'-deoxy-erythro-pentofuranosyl β
-nucleosides linked by charged 3'"'"'-5'"'"' phosphorous linkages having a negative charge at physiological pH. - View Dependent Claims (12, 13, 14, 15)
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Specification