Vault immunotherapy

Patent metadata

Field	Value
Publication number	US-10166277-B2
Application number	US-201615256683-A
Country	US
Kind code	B2
Filing date	Sep 5, 2016
Priority date	Jul 9, 2012
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

The invention relates to compositions of vault complexes for use as adjuvants for stimulating a cellular immune response to an antigen, for example a tumor antigen, and methods of using the vault complexes in the treatment of diseases, such as cancer.

First claim

The invention claimed is:

1. A method for stimulating presentation of a tumor antigen to the MHC Class I pathway in dendritic cells in a subject, comprising administering to the subject an effective amount of a vault complex comprising a major vault protein (MVP) and the tumor antigen or an antigenic fragment thereof encapsulated therein.

2. The method of claim 1 , further comprising administering to the subject a second vault complex comprising a second tumor antigen or antigenic fragment encapsulated therein.

3. The method of claim 1 , wherein the vault complex comprises two or more different tumor antigens or antigenic fragments thereof.

4. The method of claim 1 , wherein the tumor antigen is fused to an INT sequence.

5. The method of claim 4 , wherein the INT sequence comprises the amino acid sequence of SEQ ID NO: 2.

6. The method of claim 1 , wherein the tumor antigen is fused to the MVP.

7. The method of claim 6 , wherein the tumor antigen is fused to the N-terminus of the MVP.

8. The method of claim 2 , wherein the second vault complex comprises a third tumor antigen or antigenic fragment thereof.

9. The method of claim 1 , wherein the vault complex contains 1-78 major vault proteins.

10. The method of claim 1 , wherein the vault complex contains 78 major vault proteins.

11. The method of claim 8 , wherein the vault complex further comprises a vault poly ADP-ribose polymerase (VPARP).

12. The method of claim 1 , wherein the presentation of the tumor antigen results in induction of CD8 + and CD4 + memory T-cells.

13. The method of claim 1 , wherein the presentation of the tumor antigen results in production of INFγ.

14. The method of claim 1 , further comprising administering to the subject a second vault complex, which comprises a chemokine.

15. The method of claim 14 , wherein the chemokine is CCL21.

16. A method for stimulating presentation of a tumor antigen to the MEW Class I pathway in dendritic cells in a subject, comprising administering to the subject a pharmaceutical composition comprising a vault complex having a major vault protein (MVP) and a tumor antigen or an antigenic fragment thereof encapsulated therein and at least one pharmaceutically acceptable excipient.

17. The method of claim 16 , wherein tumor antigen is fused to an INT sequence.

18. The method of claim 17 , wherein the INT sequence comprises the amino acid sequence of SEQ ID NO: 2.

19. The method of claim 16 , wherein the tumor antigen is fused to the MVP.

20. The method of claim 16 , wherein the vault complex comprises two or more different tumor antigens or antigenic fragments thereof.

21. The method of claim 16 , wherein the vault complex contains 1-78 major vault proteins.

22. The method of claim 16 , wherein the vault complex contains 78 major vault proteins.

23. The method of claim 20 , wherein the vault complex further comprises a vault poly ADP-ribose polymerase (VPARP).

24. The method of claim 16 , wherein the presentation of the tumor antigen results in induction of CD8 + and CD4 + memory T-cells.

25. The method of claim 16 , wherein the presentation of the tumor antigen results in production of INFγ.

26. The method of claim 16 , further comprising a second vault complex, which contains a chemokine.

27. The method of claim 26 , wherein the chemokine is CCL21.

28. A method of stimulating presentation of a tumor antigen to the MHC Class I pathway in dendritic cells in a subject, who has cancer, which comprises administering to the subject an effective amount of a vault complex comprising a major vault protein (MVP) and a tumor antigen or an antigenic fragment thereof encapsulated therein.

29. The method of claim 28 , wherein tumor antigen is fused to an INT sequence.

30. The method of claim 29 , wherein the INT sequence comprises the amino acid sequence of SEQ ID NO: 2.

31. The method of claim 28 , wherein the tumor antigen is fused to MVP.

32. The method of claim 28 , and further comprising administering to the subject a second vault complex comprising a second tumor antigen or antigenic fragment encapsulated therein.

33. The method of claim 28 , wherein the vault complex contains 1-78 major vault proteins.

34. The method of claim 28 , wherein the vault complex contains 78 major vault proteins.

35. The method of claim 32 , wherein the vault complex further comprises a vault poly ADP-ribose polymerase (VPARP).

36. The method of claim 28 , wherein the presentation of the tumor antigen results in induction of CD8 + and CD4 + memory T-cells.

37. The method of claim 28 , wherein the presentation of the tumor antigen results in production of INFγ.

38. The method of claim 28 , further comprising administering to the subject a second vault complex, which contains a chemokine.

39. The method of claim 38 , wherein the chemokine is CCL21.

40. The method of any one of claims 28 - 39 , wherein the administering reduces tumor volume.

41. The method of any one of claims 28 - 39 , wherein the administering reduces tumor growth.

Assignees

• Univ California
• The United States Of America Represented By The Dept Of Veterans Affairs

Inventors

• Rome Leonard H
• Kickhoefer Valerie A
• Sharma Sherven
• Dubinett Steven M
• Yang Isaac
• Liau Linda M
• Kelly Kathleen A
• Yang Jian
• Kar Upendra K
• Champion Cheryl
• Jiang Janina

Classifications

• A61K38/45

  Transferases (2) · CPC title

• C07K2319/00

  Fusion polypeptide · CPC title

• A61K47/6925

  the form being a microcapsule, nanocapsule, microbubble or nanobubble · CPC title

• A61K2039/57

  characterised by the type of response, e.g. Th1, Th2 · CPC title

• A61P35/00

  Antineoplastic agents · CPC title