RNAi-mediated inhibition of histamine receptor H1-related conditions

1. A method of attenuating expression of histamine receptor H1 mRNA of a subject, comprising:

administering to the subject a composition comprising an effective amount of: (i) a single-stranded siRNA having a length of 19 to 49 nucleotides, or (ii) a double-stranded siRNA wherein each strand has a length of 19 to 49 nucleotides; wherein the siRNA comprises:

a region of at least 13 contiguous nucleotides having at least 90% sequence complementarity to, or at least 90% sequence identity with, the penultimate 13 nucleotides of the 3′ end of an mRNA corresponding to SEQ ID NO:2;

a region of at least 14 contiguous nucleotides having at least 85% sequence complementarity to, or at least 85% sequence identity with, the penultimate 14 nucleotides of the 3′ end of an mRNA corresponding to any one of SEQ ID NO:2; or,

a region of at least 15, 16, 17, or 18 contiguous nucleotides having at least 80% sequence complementarity to, or at least 80% sequence identity with, the penultimate 15, 16, 17, or 18 nucleotides, respectively, of the 3′ end of an mRNA corresponding to SEQ ID NO:2,

wherein the composition further comprises a pharmaceutically acceptable carrier, and wherein the expression of histamine receptor H1 mRNA is attenuated thereby.

2. The method of claim 1 , wherein the composition further comprises a second interfering RNA having a length of 19 to 49 nucleotides and comprising a region of at least 13 contiguous nucleotides having at least 90% sequence complementarity to, or at least 90% sequence identity with, the penultimate 13 nucleotides of the 3′ end of a second mRNA corresponding to any one of SEQ ID NO:2 and SEQ ID NO:13-SEQ ID NO:50.

3. The method of claim 1 , wherein the composition is administered via an aerosol, buccal, dermal, intradermal, inhaling, intramuscular, intranasal, intraocular, intrapulmonary, intravenous, intraperitoneal, nasal, ocular, oral, otic, parenteral, patch, subcutaneous, sublingual, topical, or transdermal route.

4. The method of claim 1 , wherein the siRNA contains one or more chemically modified nucleotides, one or more deoxyribonucleotides, or one or more non-phosphodiester linkages.

5. A method of treating an HRH1-related condition in a subject in need thereof, comprising:

administering to the subject a composition comprising an effective amount of: (i) a single-stranded siRNA having a length of 19 to 49 nucleotides, or (ii) a double-stranded siRNA wherein each strand has a length of 19 to 49 nucleotides; wherein the interfering RNA comprises:

a region of at least 13 contiguous nucleotides having at least 90% sequence complementarity to, or at least 90% sequence identity with, the penultimate 13 nucleotides of the 3′ end of an mRNA corresponding to SEQ ID NO:2;

a region of at least 14 contiguous nucleotides having at least 85% sequence complementarity to, or at least 85% sequence identity with, the penultimate 14 nucleotides of the 3′ end of an mRNA corresponding to SEQ ID NO:2; or,

a region of at least 15, 16, 17, or 18 contiguous nucleotides having at least 80% sequence complementarity to, or at least 80% sequence identity with, the penultimate 15, 16, 17, or 18 nucleotides, respectively, of the 3′ end of an mRNA corresponding to SEQ ID NO:2,

wherein the composition further comprises a pharmaceutically acceptable carrier, and wherein the an HRH1-related condition is treated thereby.

6. The method of claim 5 , wherein the composition further comprises a second interfering RNA having a length of 19 to 49 nucleotides and comprising a region of at least 13 contiguous nucleotides having at least 90% sequence complementarity to, or at least 90% sequence identity with, the penultimate 13 nucleotides of the 3′ end of a second mRNA corresponding to any one of SEQ ID NO:2 and SEQ ID NO:13-SEQ ID NO:50.

7. The method claim 5 , wherein the composition is administered via an aerosol, buccal, dermal, intradermal, inhaling, intramuscular, intranasal, intraocular, intrapulmonary, intravenous, intraperitoneal, nasal, ocular, oral, otic, parenteral, patch, subcutaneous, sublingual, topical, or transdermal route.

8. The method claim 5 , wherein the siRNA contains one or more chemically modified nucleotides, one or more deoxyribonucleotides, or one or more non-phosphodiester linkages.

9. The method claim 5 , wherein the subject is a human and the human has an HRH1-related condition or is at risk of developing an HRH1-related condition.

10. A method of attenuating expression of histamine receptor H1 mRNA of a subject, comprising:

administering to the subject a composition comprising an effective amount of a double-stranded siRNA having a sense nucleotide strand having a length of 19 to 49 nucleotides and an antisense nucleotide strand having a length of 19 to 49 nucleotides, wherein the

sense nucleotide strand and the antisense nucleotide strand have a region of at least near-perfect contiguous complementarity of at least 19 nucleotides;

wherein the antisense strand hybridizes under physiological conditions to a portion of mRNA corresponding to SEQ ID NO:1 and has a region of at least near-perfect contiguous complementarity of at least 19 nucleotides with the hybridizing portion of mRNA corresponding to SEQ ID NO:1,

wherein the composition further comprises a pharmaceutically acceptable carrier, and wherein the expression of histamine receptor H1 mRNA is attenuated thereby.

11. The method of claim 10 , wherein the subject is a human and the human has an HRH1-related condition or is at risk of developing an HRH1-related condition.

12. The method of claim 10 , wherein the antisense strand of the interfering RNA is designed to target an mRNA corresponding to SEQ ID NO:1 comprising nucleotide 285, 324, 410, 581, 584, 660, 672, 801, 817, 1045, 1059, 1089, 1157, 1209, 1223, 1241, 1253, 1265, 1363, 1391, or 1488, or an mRNA corresponding to SEQ ID NO:1 comprising nucleotide 1521, 1624, 1670, 1673, 1784, 1873, 1875, 1985, 2086, 2087, 2226, 2297, 2420, 2421, 2485, 2603, 2647, or 3431.

13. The method claim 10 , further comprising administering to the subject a second interfering RNA having a length of 19 to 49 nucleotides and comprising:

a sense nucleotide strand, an antisense nucleotide strand, and a region of at least near-perfect complementarity of at least 19 nucleotides;

wherein the antisense strand of the second interfering RNA hybridizes under physiological conditions to a second portion of mRNA corresponding to SEQ ID NO:1, and the antisense strand has a region of at least near-perfect contiguous complementarity of at least 19 nucleotides with the second hybridizing portion of mRNA corresponding to SEQ ID NO:1.

14. The method claim 10 , wherein the sense nucleotide strand and the antisense nucleotide strand are connected by a loop nucleotide strand.

15. The method claim 10 , wherein the composition is administered via an aerosol, buccal, dermal, intradermal, inhaling, intramuscular, intranasal, intraocular, intrapulmonary, intravenous, intraperitoneal, nasal, ocular, oral, otic, parenteral, patch, subcutaneous, sublingual, topical, or transdermal route.

16. The method claim 10 , wherein the siRNA contains one or more chemically modified nucleotides, one or more deoxyribonucleotides, or one or more non-phosphodiester linkages.