RNA interference in dermal and fibrotic indications

• US 9,963,702 B2
• Filed: 04/14/2016
• Issued: 05/08/2018
• Est. Priority Date: 03/24/2010
• Status: Active Grant

• Current Assignee: Phio Pharmaceuticals Corp.
• Original Assignee: Rxi Pharmaceuticals Corporation
• Inventors: Khvorova, Anastasia, Salomon, William, Kamens, Joanne, Samarsky, Dmitry, Woolf, Tod M., Pavco, Pamela A., Libertine, Lyn, Cardia, James, Bulock, Karen G.
• Primary Examiner(s): BOWMAN, AMY HUDSON
• Application Number:
  US15/099,481
• Publication Number:
  US 20170067056A1
• Time in Patent Office: 754 Days
• CPC Class Codes: A61P 1/00 Drugs for disorders of the alimentary tract or the digestive system
• CPC Class Codes: A61P 1/16 for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
• CPC Class Codes: A61P 11/00 Drugs for disorders of the respiratory system
• CPC Class Codes: A61P 13/00 Drugs for disorders of the urinary system
• CPC Class Codes: A61P 13/12 of the kidneys
• CPC Class Codes: A61P 15/00 Drugs for genital or sexual disorders for disorders of sex hormones A61P5/24; Contraceptives
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders
• CPC Class Codes: A61P 17/02 for treating wounds, ulcers, burns, scars, keloids, or the like
• CPC Class Codes: A61P 21/00 Drugs for disorders of the muscular or neuromuscular system
• CPC Class Codes: A61P 27/02 Ophthalmic agents
• CPC Class Codes: A61P 9/10 for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• CPC Class Codes: C12N 15/113 Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing when used in plants C12N15/8218
• CPC Class Codes: C12N 15/1136 against growth factors, growth regulators, cytokines, lymphokines or hormones
• CPC Class Codes: C12N 2310/14 interfering N.A.
• CPC Class Codes: C12N 2310/315 Phosphorothioates
• CPC Class Codes: C12N 2310/321 2'-O-R Modification
• CPC Class Codes: C12N 2310/322 2'-R Modification
• CPC Class Codes: C12N 2310/3341 5-Methylcytosine
• CPC Class Codes: C12N 2310/351 Conjugate
• CPC Class Codes: C12N 2310/3515 Lipophilic moiety, e.g. cholesterol
• CPC Class Codes: C12N 2310/3521 : Methyl
• CPC Class Codes: C12N 2310/3533 : Halogen
• CPC Class Codes: C12N 2320/32 : Special delivery means, e.g. tissue-specific
• CPC Class Codes: C12N 2320/52 : modulating the physical stability, e.g. GC-content

Abstract

The present invention relates to RNAi constructs with improved tissue and cellular uptake characteristics and methods of use of these compounds in dermal and fibrotic applications.

Claims

1. A method for treating or preventing a fibrotic disorder, the method comprising administering to a subject in need thereof a therapeutically effective amount of a double-stranded ribonucleic acid (dsRNA) directed against CTGF comprising a sense strand and an antisense strand, wherein the sense strand comprises at least 12 contiguous nucleotides of a sequence selected from the group consisting of

2. The method of claim 1, wherein the dsRNA is administered via intradermal injection.

3. The method of claim 1, wherein the dsRNA is administered locally to the skin.

4. The method of claim 1, wherein two or more dsRNAs are administered simultaneously or sequentially.

5. The method of claim 1, wherein the dsRNA is hydrophobically modified.

6. The method of claim 1, wherein the dsRNA is linked to a hydrophobic conjugate.

7. The method of claim 1, wherein the sense strand comprises

8. The method of claim 7, wherein the sense strand comprises

9. The method of claim 1, wherein the sense strand comprises

10. The method of claim 9, wherein the sense strand comprises

11. The method of claim 1, wherein the sense strand comprises

12. The method of claim 11, wherein the sense strand comprises

13. The method of claim 1, wherein the fibrotic disorder is selected from the group consisting of pulmonary fibrosis, liver cirrhosis, scleroderma and glomerulonephritis, lung fibrosis, liver fibrosis, skin fibrosis, muscle fibrosis, radiation fibrosis, kidney fibrosis, proliferative vitreoretinopathy, restenosis and uterine fibrosis, and trabeculectomy failure due to scarring.

14. The method of claim 1 wherein the dsRNA is formulated for delivery to the skin, for topical delivery, for intradermal injection and/or wherein the dsRNA is in a neutral formulation.

17. The method of claim 14, wherein the dsRNA is administered via intradermal injection.

18. The method of claim 14, wherein the dsRNA is administered locally to the skin.

19. The method of claim 14, wherein dsRNA is hydrophobically modified.

20. The method of claim 14, wherein the dsRNA is linked to a hydrophobic conjugate.

15. A method for treating or preventing a fibrotic disorder, the method comprising administering to a subject in need thereof a therapeutically effective amount of a double-stranded ribonucleic acid (dsRNA) directed against CTGF comprising a sense strand and an antisense strand, wherein the sense strand comprises at least 12 contiguous nucleotides of a sequence selected from the group consisting of

16. The method of claim 15, wherein the sense strand comprises