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The present invention relates to methods and compositions for inducing an immune response in a subject, wherein the subject is administered an effective amount of at least one heat shock protein in combination with one or more defined target antigens. These methods and compositions may be used in th

The present invention relates to methods and compositions for inducing an immune response in a subject, wherein the subject is administered an effective amount of at least one heat shock protein in combination with one or more defined target antigens. These methods and compositions may be used in the treatment of infectious eases and cancers.

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The invention claimed is: 1. A composition comprising (a) isolated complexes each comprising a hybrid antigen non-covalently bound to a heat shock protein, wherein the hybrid antigen comprises an immunogenic domain and a heat shock protein binding domain, wherein the immunogenic domain is covalentl

The invention claimed is: 1. A composition comprising (a) isolated complexes each comprising a hybrid antigen non-covalently bound to a heat shock protein, wherein the hybrid antigen comprises an immunogenic domain and a heat shock protein binding domain, wherein the immunogenic domain is covalently linked to the heat shock protein binding domain; wherein the heat shock protein binding domain is a peptide, and wherein the immunogenic domain comprises an epitope of an antigen of: a neoplastic disease, an infectious agent of an infectious disease, an autoimmune disease or an allergy; and (b) a pharmaceutically acceptable carrier. 2. The composition of claim 1, wherein said immunogenic domain comprises a protein or peptide antigen, or a selected epitope of said protein or peptide antigen. 3. The composition of claim 2, wherein said immunogenic domain is 7-20 amino acids. 4. The composition of claim 2, wherein said immunogenic domain is 4-100 amino acids. 5. The composition of claim 1 or 2, wherein said immunogenic domain comprises an epitope associated with the activation of B cells, T helper cells or cytotoxic T cells. 6. The composition of claim 1, wherein said immunogenic domain comprises a carbohydrate, a nucleic acid or a lipid. 7. The composition of claim 1, wherein the heat shock protein is prepared using recombinant techniques. 8. The composition of claim 1, 2 or 4, wherein said heat shock protein binding domain is 7-15 amino acids. 9. The composition of claim 5, wherein said heat shock protein binding domain is 7-15 amino acids. 10. The composition of claim 1, wherein the heat shock protein is selected from the group consisting of BiP, hsp70, hsc70, gp96, hsp60, hsp40 and hsp90. 11. The composition of claim 1, wherein the heat shock protein is hsp70. 12. The composition of claim 1, wherein the heat shock protein is hsc 70. 13. The composition of claim 1, wherein the heat shock protein is gp96. 14. The composition of claim 1, wherein the heat shock protein is BiP. 15. The composition of claim 1, wherein said heat shock protein binding domain comprises the amino acid sequence His Trp Asp Phe Ala Trp Pro Trp (SEQ ID NO:1). 16. The composition of claim 1, wherein said heat shock protein binding domain comprises the amino acid sequence Phe Trp Gly Leu Trp Pro Trp Glu (SEQ ID NO:4), Gln Lys Arg Ala Ala (SEQ ID NO:5) or Arg Arg Arg Ala Ala (SEQ ID NO:6). 17. The composition of claim 1, wherein said immunogenic domain and said heat shock protein binding domain are separated by a peptide linker. 18. The composition of claim 17, wherein the peptide linker is Gly Ser Gly. 19. The composition of claim 1, wherein the hybrid antigen is a peptide. 20. The composition of claim 1, wherein the isolated complexes comprise different heat shock proteins. 21. The composition of claim 1, 4, 10, or 11, wherein the isolated complexes comprise different hybrid antigens. 22. The composition of claim 1, wherein the immunogenic domain comprises an epitope of an antigen of a neoplastic disease, or an epitope of an antigen of an infectious agent of an infectious disease. 23. The composition of claim 21, wherein the immunogenic domain comprises an epitope of an antigen of a neoplastic disease, or an epitope of an antigen of an infectious agent of an infectious disease. 24. The composition of claim 1, wherein the immunogenic domain comprises an epitope of an antigen of an autoimmune disease or allergy. 25. The composition of claim 22, wherein the immunogenic domain comprises an epitope of an antigen of a neoplastic disease. 26. The composition of claim 25, wherein the neoplastic disease is selected from the group consisting of a sarcoma, lymphoma, leukemia and carcinoma. 27. The composition of claim 26, wherein the neoplastic disease is selected from the group consisting of melanoma, carcinoma of the breast, carcinoma of the prostate, ovarian carcinoma, carcinoma of the cervix, uterine carcinoma, colon carcinoma, carcinoma of the lung, glioblastoma, and astrocytoma. 28. The composition of claim 22, wherein the immunogenic domain comprises an epitope of an antigen of an infectious agent of an infectious disease. 29. The composition of claim 28, wherein the infectious agent is a bacterium, virus, protozoan, mycoplasma, fungus, yeast, parasite or prion. 30. The composition of claim 28, wherein the infectious agent is a bacterium. 31. The composition of claim 28, wherein the infectious agent is a virus. 32. The composition of claim 28, wherein the infectious agent is a protozoan. 33. The composition of claim 30, wherein the bacterium is selected from the group consisting of Salmonella, Staphylococcus, Streptococcus, Enterococcus, Clostridium, Escherichia, Klebsiella, Vibrio, Mycobacterium, and Mycoplasma pneumoniae. 34. The composition of claim 31, wherein the virus is selected from the group consisting of a human papilloma virus, herpes virus, retrovirus, hepatitis virus, influenza virus, rhinovirus, respiratory syncytial virus, cytomegalovirus, adenovirus, herpes simplex virus, herpes zoster virus, human immunodeficiency virus 1, and human immunodeficiency virus 2. 35. The composition of claim 32, wherein the protozoan is selected from the group consisting of an amoeba, a malarial parasite, and Trypanosoma cruzi. 36. The composition of claim 1, 4, 10 or 22, wherein the heat shock protein is a human heat shock protein. 37. The composition of claim 21, wherein the heat shock protein is a human heat shock protein. 38. The composition of claim 1, 4, 10 or 22 further comprising one or more adjuvants. 39. The composition of claim 21 further comprising one or more adjuvants. 40. A method for inducing an immune response to an immunogenic domain in a subject in need thereof, comprising administering, to the subject, the composition of any one of claims 1, 4, 10, or 22, whereby an immune response to said immunogenic domain is induced. 41. A method for inducing an immune response to an immunogenic domain in a subject in need thereof, comprising administering, to the subject, the composition of claim 21, whereby an immune response to said immunogenic domain is induced. 42. A method for treating an infectious disease in a subject in need thereof, comprising administering, to the subject, a therapeutically effective amount of the composition of claim 28. 43. A method for treating a neoplastic disease in a subject in need thereof, comprising administering, to the subject, a therapeutically effective amount of the composition of claim 25. 44. A method for treating a neoplastic disease in a subject in need thereof, comprising administering, to the subject, a therapeutically effective amount of the composition of claim 23, and wherein said immunogenic domain comprises an antigen of said neoplastic disease. 45. The method of claim 40, wherein said administering is repeated at least once. 46. The method of claim 42 or 43 wherein said administering is repeated at least once. 47. The method of claim 40, wherein said subject is a human. 48. The method of claim 42 or 43 wherein said subject is a human.