Gapped 2' modified oligonucleotides
First Claim
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1. An oligonucleotide comprising a sequence of nucleotide unite specifically hybridizable with DNA or RNA wherein said sequence is divided into a first segment and a second segment, wherein:
- said first segment is adjacent said second segment and does not overlap said second segment;
said first segment has at least two consecutively located 2'"'"'-F nucleotide units;
said second segment is composed of at least five consecutively located nucleotide units having 2'"'"'-H sugar moieties; and
said oligonucleotide hybridizes with said DNA or RNA with higher binding affinity than a corresponding oligomer in which said at least two consecutively located 2'"'"'-F nucleotide units are 2'"'"'-H nucleotide units.
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Abstract
Oligonucleotides and other macromolecules are provided which have increased nuclease resistance, substituent groups for increasing binding affinity to complementary strand, and subsequences of 2'"'"'-deoxy-erythro-pentofuranosyl nucleotides that activate RNase H. Such oligonucleotides and macromolecules are useful for diagnostics and other research purposes, for modulating the expression of a protein in organisms, and for the diagnosis, detection and treatment of other conditions susceptible to oligonucleotide therapeutics.
97 Citations
15 Claims
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1. An oligonucleotide comprising a sequence of nucleotide unite specifically hybridizable with DNA or RNA wherein said sequence is divided into a first segment and a second segment, wherein:
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said first segment is adjacent said second segment and does not overlap said second segment; said first segment has at least two consecutively located 2'"'"'-F nucleotide units; said second segment is composed of at least five consecutively located nucleotide units having 2'"'"'-H sugar moieties; and said oligonucleotide hybridizes with said DNA or RNA with higher binding affinity than a corresponding oligomer in which said at least two consecutively located 2'"'"'-F nucleotide units are 2'"'"'-H nucleotide units. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An oligonucleotide comprising a sequence of nucleotide units specifically hybridizable with DNA or RNA, wherein said sequence is divided into a first segment, a second segment, and a third segment wherein:
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said first segment and said third segment each has at least two consecutively located 2'"'"'-deoxy-2'"'"'-fluoro nucleotide units; and said second segment is positioned adjacent to and between said first segment and said third segment and is composed of at least three consecutively located nucleotide units having 2'"'"'-deoxy sugar moieties. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification