Abstract: Tolerance of the immune system for endogenous TRP2 can be overcome and an immune response stimulated by administration of xenogeneic or xenoexpressed TRP2 antigen. For example, mouse TRP2, or antigenically-effective portions thereof, can be used to stimulate an immune response to the corresponding differentiation antigen in a human subject. Administration of xenogeneic antigens in accordance with the invention results in an effective immunity against TRP2 expressed by the cancer in the treated individual, thus providing a therapeutic approach to the treatment of cancers expressing TRP2, such as melanoma.

Abstract: Tolerance of the immune system for endogenous gp100 can be overcome and an immune response stimulated by administration of xenogeneic or xenoexpressed gp100 antigen. For example, mouse gp100, or antigenically-effective portions thereof, can be used to stimulate an immune response to the corresponding differentiation antigen in a human subject. Administration of xenogeneic antigens in accordance with the invention results in an effective immunity against gp100 expressed by the cancer in the treated individual, thus providing a therapeutic approach to the treatment of cancers expressing gp100, such as melanoma.

Abstract: Tolerance of the immune system for endogenous PSMA can be overcome and an immune response stimulated by administration of xenogeneic or xenoexpressed PSMA antigen. For example, mouse PSMA, or antigenically-effective portions thereof, can be used to stimulate an immune response to the corresponding differentiation antigen in a human subject. Administration of xenogeneic antigens in accordance with the invention results in an effective immunity against PSMA expressed by the cancer in the treated individual, thus providing a therapeutic approach to the treatment of cancers expressing PSMA, such as prostate cancer.

Abstract: The present invention provides an isolated nucleic acid molecule whose sequence encodes the amino acid sequence for gp75 or a fragment thereof. The present invention further provides an isolated cDNA molecule of the gp75 nucleic acid molecule or a fragment thereof and the amino acid sequence derived therefrom. This invention also provides vaccines for stimulating or enhancing in a subject to whom the vaccine is administered production of antibodies directed against gp75. This invention further provides methods using the vaccines of this invention for stimulating or enhancing production of antibodies against gp75 as well as for treating, preventing or delaying the recurrence of cancer.

Abstract: Tolerance of the immune system for self differentiation antigens can be overcome and an immune response stimulated by administration of a therapeutic differentiation antigen. The therapeutic differentiation antigen is altered with respect to the target differentiation antigen in the individual being treated (i.e., the differentiation antigen to which an immune response is desired) in one of three ways. First, the therapeutic differentiation antigen may be syngeneic with the target differentiation antigen, provided that therapeutic differentiation antigen is expressed in cells of a species different from the individual being treated. For example, a human differentiation antigen expressed in insect or other non-human host cells can be used to stimulate an immune response to the differentiation antigen in a human subject. Second, the therapeutic differentiation antigen may be a mutant form of a syngeneic differentiation antigen, for example a glycosylation mutant.

Abstract: The present invention provides an isolated nucleic acid molecule whose sequence encodes the amino acid sequence for gp75 or a fragment thereof. The present invention further provides an isolated cDNA molecule of the gp75 nucleic acid molecule or a fragment thereof and the amino acid sequence derived therefrom. This invention also provides vaccines for stimulating or enhancing in a subject to whom the vaccine is administered production of antibodies directed against gp75. This invention further provides methods using the vaccines of this invention for stimulating or enhancing production of antibodies against gp75 as well as for treating, preventing or delaying the recurrence of cancer.