Abstract: Tumor antigen inducing and/or activating HLA-A2-restricted tumor-specific cytotoxic T lymphocytes that is activated by recognizing HLA-A2 and a tumor antigen peptide, and a peptide or polypeptide derived from the tumor antigen, a polynucleotide encoding the peptide or a complementary strand polynucleotide thereof, a transformant comprising a recombinant vector which comprises the polynucleotide are provided.

Abstract: A method for treating a prostate cancer, which comprises administering a therapeutically effective amount of a cancer antigen peptide-associated agent and a lower dose of an estramustine or a salt thereof to a patient in need thereof, and a pharmaceutical composition thereof are provided.

Abstract: Tumor antigen inducing and/or activating HLA-A2-restricted tumor-specific cytotoxic T lymphocytes that is activated by recognizing HLA-A2 and a tumor antigen peptide, and a peptide or polypeptide derived from the tumor antigen, a polynucleotide encoding the peptide or a complementary strand polynucleotide thereof, a transformant comprising a recombinant vector which comprises the polynucleotide are provided.

Abstract: Tumor antigen inducing and/or activating HLA-A2-restricted tumor-specific cytoxic T lymphocytes that is activated by recognizing HLA-A2 and a tumor antigen peptide, and a peptide or polypeptide derived from the tumor antigen, a polynucleotide encoding the peptide or a complementary strand polynucleotide thereof, a transformant comprising a recombinant vector which comprises the polynucleotide are provided.

Abstract: Tumor antigen inducing and/or activating HLA-A2-restricted tumor-specific cytotoxic T lymphocytes that is activated by recognizing HLA-A2 and a tumor antigen peptide, and a peptide or polypeptide derived from the tumor antigen, a polynucleotide encoding the peptide or a complementary strand polynucleotide thereof, a transformant comprising a recombinant vector which comprises the polynucleotide are provided.

Abstract: A cancer antigen peptide comprising an amino acid sequence shown in SEQ ID NO: 1 or 2, or a derivative thereof having the functionally equivalent property is provided. The provided cancer antigen peptide is a partial peptide derived from enhancer of zeste homolog 2, which is capable of binding to HLA-A24 antigen and is recognized by cytotoxic T lymphocytes. The cancer antigen peptide of the invention is useful for treatment and prevention of prostate cancer.

Abstract: Tumor antigen inducing and/or activating HLA-A2-restricted tumor-specific cytotoxic T lymphocytes that is activated by recognizing HLA-A2 and a tumor antigen peptide, and a peptide or polypeptide derived from the tumor antigen, a polynucleotide encoding the peptide or a complementary strand polynucleotide thereof, a transformant comprising a recombinant vector which comprises the polynucleotide are provided.

Abstract: A novel tumor antigen protein and gene therefor, tumor antigen peptides derived from said tumor antigen protein or derivatives thereof as well as medicaments, prophylactics, or diagnostics for tumors using such tumor substances in vivo or in vitro are provided.

Abstract: A novel tumor antigen protein and gene therefor, tumor antigen peptides derived from said tumor antigen protein or derivatives thereof as well as medicaments, prophylactics, or diagnostics for tumors using such tumor substances in vitro or in vitro are provided.

Abstract: Tumor antigen peptides derived from cyclophilins or derivatives thereof having the functionally equivalent properties; medicaments, prophylactics, or diagnostics for tumors comprising as an active ingredient such tumor antigen peptides or derivatives thereof, cyclophilins or partial polypeptides thereof, or genes encoding said cyclophilins or partial polypeptides thereof; in vitro use of the above substances for treatment of tumors; and antibodies against the above tumor antigen peptides derived from cyclophilins or derivatives thereof are provided.

Abstract: It is intended to provide a convenient immunity monitoring system whereby T cell frequencies specific to a plural number of antigen peptides can be assayed by using a relatively small amount of blood. Peripheral monocytes are collected and frequently stimulated with an antigen without directly using any antigen presenting cells. Then T cells specific to the antigen in the thus stimulated peripheral monocytes are detected to thereby detect antigen-specific T cells. thus, diseases such as cancer can be prevented or treated with the use of a peptide having such a function, in particular, cancer tumor-rejection antigen peptide.

Abstract: Tumor antigen peptides derived from cyclophilins or derivatives thereof having the functionally equivalent properties; medicaments, prophylactics, or diagnostics for tumors comprising as an active ingredient such tumor antigen peptides or derivatives thereof, cyclophilins or partial polypeptides thereof, or genes encoding said cyclophilins or partial polypeptides thereof; in vitro use of the above substances for treatment of tumors; and antibodies against the above tumor antigen peptides derived from cyclophilins or derivatives thereof are provided.

Abstract: A cancer antigen peptide comprising an amino acid sequence shown in SEQ ID NO: 1 or 2, or a derivative thereof having the functionally equivalent property is provided. The provided cancer antigen peptide is a partial peptide derived from enhancer of zeste homolog 2, which is capable of binding to HLA-A24 antigen and is recognized by cytotoxic T lymphocytes. The cancer antigen peptide of the invention is useful for treatment and prevention of prostate cancer.

Abstract: Tumor antigen peptides that induce CTL from peripheral blood mononuclear cells of a patient with prostate cancer in an HLA-A2-restricted or an HLA-A24-restricted manner were identified based on the amino acid sequences of PSA, PSM, and PSCA, which are proteins known as markers of prostate cancer. Also disclosed is a peptide having a function as a tumor antigen that is recognized by HLA-A2-restricted CTL or HLA-A24-restricted CTL, an antibody against the peptide, a compound having interaction with the peptide, an agent for inducing CTL that includes the peptide, a pharmaceutical composition that includes one or more thereof, a method for identifying a compound that has interaction with the peptide, a method for inducing CTL using the peptide, a method for measuring the peptide and the antibody, as well as a reagent kit used for the identification method or the measurement method.

Abstract: A gene encoding a tumor antigen that is capable of being recognized by and/or inducing cytotoxic T lymphocyte (CTL) in an HLA-A2 restricted manner was identified from cDNA library of human colon cancer cell line by using a gene expression cloning method, and further found was a peptide having an epitope of the tumor antigen, which is capable of being recognized by and/or inducing cytotoxic T lymphocyte (CTL) in an HLA-A2 restricted manner. In addition, a gene encoding a tumor antigen that is capable of being recognized by and/or inducing cytotoxic T lymphocyte (CTL) in an HLA-A26 restricted manner was identified from a cDNA library of human esophageal cancer cell line, and further found was a peptide having an epitope of the tumor antigen.

Abstract: DNA encoding a protein having the amino acid sequence shown in SEQ ID NO: 2 or a variant protein thereof in which one or more amino acid residues are substituted, deleted or added, said protein or variant protein thereof being capable of yielding, through its intracellular decomposition, peptide fragment(s) which can bind to major histocompatibility complex (MHC) class I antigen and which can be recognized by T cells in such binding state, medicines comprising said DNA as an active ingredient, expression plasmids comprising said DNA, transformants transformed with said expression plasmids, as well as tumor antigen proteins and tumor antigen peptides produced by expression of said DNA.

Abstract: A gene, which codes for a tumor antigen that is recognized by a cytotoxic T-lymphocyte (CTL) and/or induces a CTL in an HLA-A2-restricted manner, was isolated from a cDNA library of the human glioma cell strain KNS60 and identified. In addition, a peptide having the epitope of the tumor antigen was found, based on the tumor antigen coded by the gene obtained.

Abstract: To provide a tumor antigen peptide derived from SART-1 and a derivative thereof, possessing functionally equivalent characteristics thereto; or a therapeutic agent, prophylactic agent or the like for a tumor, each utilizing, the tumor antigen peptide.

Abstract: DNA encoding a protein having the amino acid sequence shown in SEQ ID NO: 2 or a variant protein thereof in which one or more amino acid residues are substituted, deleted or added, said protein or variant protein thereof being capable of yielding, through its intracellular decomposition, peptide fragment(s) which can bind to major histocompatibility complex (MHC) class I antigen and which can be recognized by T cells in such binding state, medicines comprising said DNA as an active ingredient, expression plasmids comprising said DNA, transformants transformed with said expression plasmids, as well as tumor antigen proteins and tumor antigen peptides produced by expression of said DNA.

Abstract: An agent is described for suppressing an allergic reaction, comprising a peptide which is derived from the same antigenic substance as the antigenic substance eliciting the allergic reaction, contains an epitope different from an epitope participating in elicitation of the allergic reaction and yet does not elicit the allergic reaction. Also described is a medicament for preventing and/or treating type I allergic diseases or a pharmaceutical composition comprising the agent for suppressing an allergic reaction. A method for suppressing allergic reactions, a method of desensitization, and a method for preventing and/or treating type I allergic diseases with use of the same are further described.