Abstract: A novel gene (designated PHOR-1) that is highly over-expressed in prostate and other cancers and its encoded protein are described. PHOR-1 is a G protein-coupled receptor with homology to receptors involved in olfaction. PHOR-1 in normal human tissues is restricted to prostate, and this gene is highly over-expressed in prostate cancer as well as in cancers of the kidney, uterus, cervix, stomach and rectum. Consequently, PHOR-1 provides a diagnostic and/or therapeutic target for prostate cancer.

Abstract: Described is a novel family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are exclusively or predominantly expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STEAP” (Six Transmembrane Epithelial Antigen of the Prostate). Four particular human STEAP's are described and characterized herein. The human STEAP's exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STEAP family, STEAP-1, appears to be a type IIIa membrane protein expressed predominantly in prostate cells in normal human tissues. Structurally, STEAP-1 is a 339 amino acid protein characterized by a molecular topology of six transmembrane domains and intracellular N- and C-termini, suggesting that it folds in a “serpentine” manner into three extracellular and two intracellular loops.

Abstract: Described is a family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STEAP” (Six Transmembrane Epithelial Antigen of the Prostate). Four particular human STEAPs are described and characterized herein. The human STEAPs exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STEAP family is STEAP-1, which appears to be a type IIIa membrane protein. STEAP-1 is a 339 amino acid protein. STEAP-1 protein expression is maintained at high levels across various stages of prostate cancer. Moreover, STEAP-1 is highly over-expressed in certain other human cancers.

Abstract: A novel gene (designated PHOR-1) that is highly over-expressed in prostate and other cancers and its encoded protein are described. PHOR-1 is a G protein-coupled receptor with homology to receptors involved in olfaction. PHOR-1 in normal human tissues is restricted to prostate, and this gene is highly over-expressed in prostate cancer as well as in cancers of the kidney, uterus, cervix, stomach and rectum. Consequently, PHOR-1 provides a diagnostic and/or therapeutic target for prostate cancer.

Abstract: A novel gene (designated 84P2A9) and its encoded protein is described. While 84P2A9 exhibits prostate and testis specific expression in normal adult tissue, it is aberrantly expressed multiple cancers including prostate, testis, kidney, brain, bone, skin, ovarian, breast, pancreas, colon, lymphocytic and lung cancers. Consequently, 84P2A9 provides a diagnostic and/or therapeutic target for cancers, and the 84P2A9 gene or fragment thereof, or its encoded protein or a fragment thereof used to elicit an immune response.

Abstract: The present invention relates to novel, soluble, recombinant RANKL (Receptor Activator of Nuclear Factor—&kgr;B Ligand) variant proteins which may be expressed solubly in E. coli, variants that have substantially reduced binding to OPG, variants that act as RANKL antagonists, and methods for generating the same.

Abstract: A novel gene (designated 205P1B5) and its encoded protein are described. While 205P1B5 exhibits tissue specific expression in normal adult tissue, it is aberrantly expressed in prostrate cancer. Consequently, 205P1B5 provides a diagnostic, prognostic, prophlactic and/or therapeutic target for cancer. The 205P1B5 gene or fragment thereof, or its encoded protein or a fragment thereof, can be used to elicit an immune response.

Abstract: A novel gene 0193P1E1B (also designated 193P1E1B) and its encoded protein, and variants thereof, are described wherein 193P1E1B exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 193P1E1B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 193P1E1B gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 193P1E1B can be used in active or passive immunization.

Abstract: Described is a novel family of cell surface serpentine transmembrane antigens. Two of the proteins in this family are exclusively or predominantly expressed in the prostate, as well as in prostate cancer, and thus members of this family have been termed “STEAP” (Six Transmembrane Epithelial Antigen of the Prostate). Four particular human STEAPs are described and characterized herein. The human STEAPs exhibit a high degree of structural conservation among them but show no significant structural homology to any known human proteins. The prototype member of the STEAP family, STEAP-1, appears to be a type IIIa membrane protein expressed predominantly in prostate cells in normal human tissues. Structurally, STEAP-1 is a 339 amino acid protein characterized by a molecular topology of six transmembrane domains and intracellular N- and C-termini, suggesting that it folds in a “serpentine” manner into three extracellular and two intracellular loops.

Abstract: A novel gene (designated 151P3D4) and its encoded protein, and variants thereof, are described wherein 151P3D4 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 151P3D4 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 151P3D4 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 151P3D4 can be used in active or passive immunization.

Abstract: A novel gene (designated PC-LECTIN) that is highly overexpressed in prostate cancer and its encoded protein is described. PC-LECTIN in normal human tissues is restricted to testis, but is highly expressed in prostate cancer. Consequently, PC-LECTIN provides a diagnostic and/or therapeutic target for prostate cancer.

Abstract: A novel gene (designated 213P1F11) and its encoded protein, and variants thereof, are described wherein 213P1F11 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 213P1F11 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 213P1F11 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 213P1F11 can be used in active or passive immunization.

Abstract: A novel gene (designated 121P2A3) and its encoded protein, and variants thereof, are described wherein 121P2A3 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 121P2A3 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 121P2A3 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 121P2A3 can be used in active or passive immunization.

Abstract: A novel gene (designated 238P1B2) and its encoded protein, and variants thereof, are described wherein 238P1B2 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 238P1B2 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 238P1B2 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 238P1B2 can be used in active or passive immunization.

Abstract: A novel gene (designated 162P1E6) and its encoded protein, and variants thereof, are described wherein 162P1E6 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 162P1E6 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 162P1E6 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 162P1E6 can be used in active or passive immunization.

Abstract: A novel gene (designated 158P3D2) and its encoded protein, and variants thereof, are described wherein 158P3D2 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 158P3D2 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 158P3D2 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 158P3D2 can be used in active or passive immunization.

Abstract: A novel gene (designated 161P5C5) and its encoded protein, and variants thereof, are described wherein 161P5C5 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 161P5C5 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 161P5C5 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 161P5C5 can be used in active or passive immunization.

Abstract: A novel gene (designated 193P1E1B) and its encoded protein, and variants thereof, are described wherein 193P1E1B exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 193P1E1B provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 193P1E1B gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 191P1E1B can be used in active or passive immunization.

Abstract: A novel gene (designated 121P1F1) and its encoded protein, and variants thereof, are described wherein 121P1F1 exhibits tissue specific expression in normal adult tissue, and is aberrantly expressed in the cancers listed in Table I. Consequently, 121P1F1 provides a diagnostic, prognostic, prophylactic and/or therapeutic target for cancer. The 121P1F1 gene or fragment thereof, or its encoded protein, or variants thereof, or a fragment thereof, can be used to elicit a humoral or cellular immune response; antibodies or T cells reactive with 121P1F1 can be used in active or passive immunization.

Abstract: The present invention relates to novel, soluble, recombinant variants RANKL (Receptor Activator of Nuclear Factor—&kgr;B Ligand) proteins, which may be expressed solubly in E. coli, variants that act as RANKL antagonists, and methods for generating the same.