Human type 2 RNase H
DCFirst Claim
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1. An isolated polynucleotide encoding the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1).
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Abstract
The present invention provides polynucleotides and polypeptides encoded thereby of human Type 2 RNase H. Methods of using these polynucleotides and polypeptides in enhancing antisense oligonucleotide therapies are also provided.
16 Citations
17 Claims
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1. An isolated polynucleotide encoding the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1).
- 2. A vector comprising a nucleic acid encoding the human Type 2 RNase H polypeptide (SEQ ID NO:
- 4. A composition comprising a vector comprising a nucleic acid encoding the human Type 2 RNase H polypeptide (SEQ ID NO:
-
6. A nucleic acid probe which hybridizes to a nucleic acid encoding the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1).
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7. An antisense oligonucleotide which cleaves its complementary target RNA by the human RNase H Type 2 polypeptide (SEQ ID NO:
- 1), wherein the antisense oligonucleotide is a chimeric oligonucleotide with 2'"'"' methoxy flanks and a 5 deoxynucleotide center gap.
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8. A composition comprising an antisense oligonucleotide and a human Type 2 RNase H polypeptide, wherein the human Type 2 RNase H polypeptide is the human RNase H Type 2 polypeptide (SEQ ID NO:
- 1).
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9. A human Type 2 RNase H-his-tag fusion polypeptide, wherein the human Type 2 RNase H polypeptide is the human RNase H Type 2 polypeptide (SEQ ID NO:
- 1).
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10. A method of enhancing inhibition of expression of a selected protein by an antisense oligonucleotide targeted to an RNA encoding the selected protein comprising, targeting the antisense oligonucleotide, which antisense oligonucleotide is a chimeric oligonucleotide with 2'"'"' methoxy flanks and a 5 deoxynucleotide center gap, to the RNA such that the antisense oligonucleotide hybridizes to form an antisense oligonucleotide-RNA duplex, wherein the antisense oligonucleotide-RNA duplex is cleaved by the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1), whereby inhibition of expression of the selected protein is enhanced.
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11. A method of making an antisense oligonucleotide which is cleaved by the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1) comprising synthesizing an oligonucleotide which is targeted to a selected RNA wherein the antisense oligonucleotide, when hybridized to the selected RNA target to from a duplex, will bind the human Type 2 RNase H polypeptide and thereby cleave the duplex.
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12. A method of screening oligonucleotides to identify effective antisense oligonucleotides for inhibition of expression of a selected target protein comprising:
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(a) contacting the human Type 2 RNase H polypeptide (SEQ ID NO;
1) with an RNA encoding the selected target protein and an oligonucleotide complementary to at least a portion of the RNA under conditions in which an oligonucleotide-RNA duplex is formed;(b) detecting cleavage of the RNA of the oligonucleotide-RNA duplex wherein cleavage is indicative of antisense efficacy. - View Dependent Claims (13, 14, 15, 16)
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17. A method of identifying agents which increase or decrease activity or levels of the human Type 2 RNase H polypeptide (SEQ ID NO:
- 1) in a host cell comprising;
(a) contacting a cell in vitro expressing the human type II RNase H polypeptide with an agent suspected or increasing or decreasing activity or levels of the human RNase H polypeptide; and (b) measuring the activity or levels of the human RNase H polypeptide in the presence and absence of the agent so that an increase or decrease in the activity or levels of the human RNase H polypeptide can be determined.
- 1) in a host cell comprising;
Specification