OLIGONUCLEOTIDES FOR MODULATING TARGET RNA ACTIVITY
First Claim
1. An oligonucleotide comprising a antisense sequence that comprises a guide sequence corresponding to the seed sequence of a microRNA, with the proviso that the oligonucleotide is not a microRNA or does not comprise a sequence corresponding to the complete sequence of a microRNA.
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Abstract
The present invention describes oligonucleotides that bind to microRNA target sites in target RNAs, such as mRNAs. The oligonucleotides of the invention may mediate RNase H degradation of the target RNA, mediate RNAi of the target RNA or prevent microRNA regulation of the target RNA. The oligonucleotides of the invention are useful e.g. as research tools for studying microRNA:mRNA interactions and for therapeutic development. The present invention also describes methods of identifying microRNA target sites, methods of validating microRNA target sites, methods of identifying oligonucleotides of the invention and methods of modulating the activity of a target RNA using the oligonucleotides of the invention.
36 Citations
93 Claims
- 1. An oligonucleotide comprising a antisense sequence that comprises a guide sequence corresponding to the seed sequence of a microRNA, with the proviso that the oligonucleotide is not a microRNA or does not comprise a sequence corresponding to the complete sequence of a microRNA.
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37. The oligonucleotide comprising a repeating pattern of one or more LNA units and one or more units that are substituted in the 2′
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57. A method comprising the steps of:
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a. Providing a target sequence of a target RNA regulated by a microRNA, said target sequence being the sequence of the target RNA involved in microRNA regulation. b. Designing an oligonucleotide sequence that comprises a stretch of bases of at least 6 bases that is complementary to the target sequence c. Synthesizing the oligonucleotide sequence of step b, thereby providing the oligonucleotide of step b, said oligonucleotide being a candidate regulator of the activity of a target RNA. - View Dependent Claims (58, 60)
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72. A method comprising the steps of
a. Providing a reporter system for expression of a target mRNA b. Providing a oligonucleotide that is complementary to a part of the target mRNA c. Determining the expression of the target mRNA in the presence of the oligonucleotide of step b d. Determining the expression of the target mRNA in the absence of the oligonucleotide of step b e. Comparing the expression levels in c and d and thereby verifying whether the oligonucleotide affect the expression of the mRNA.
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Specification