Specific immune responses against epitopes derived from Aurora kinase A and B in acute myeloid leukemia. 2013

Vanessa Schneider, and Stephanie Egenrieder, and Marlies Götz, and Cornelia Herbst, and Jochen Greiner, and Susanne Hofmann
Department of Internal Medicine III, University of Ulm, Ulm, Germany.

Aurora kinases are serine/threonine kinases which play an important role in the process of mitosis and cell cycle regulation. Aurora kinase inhibitors are described to sensitize malignant cells to cytosine arabinoside and specific antibodies by mediating apoptosis. Aurora kinases are overexpressed in most acute leukemias but also in solid tumors. In this study we investigated whether epitopes derived from Aurora kinase A and B are able to elicit cellular immune responses in patients with acute myeloid leukemia (AML) to investigate their role as potential targets for specific immunotherapy. Samples of eight patients with AML were analyzed in enzyme-linked immunosorbent spot (ELISpot) assays and compared with immune responses of nine healthy volunteers (HVs). Specific CD8 + T cell responses were detected against the epitopes Aura A1, A2, B1, B2, B3, B4 and B5. Immune responses for epitopes derived from Aura B were induced more frequently compared to Aura A. The antigens with the most frequent cytotoxic T-lymphocyte (CTL) responses were Aura B3, B4 and B5, although the number of patients tested for these antigens was low. Aura B5 did not elicit specific CTL responses in HVs. For epitope Aura B6 no immune response was detected in HVs or patients. Taken together, with the combination of Aurora kinase inhibitors and an immunotherapeutic approach, an effective blast and minimal residual disease elimination might be achieved.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D013602 T-Lymphocytes, Cytotoxic Immunized T-lymphocytes which can directly destroy appropriate target cells. These cytotoxic lymphocytes may be generated in vitro in mixed lymphocyte cultures (MLC), in vivo during a graft-versus-host (GVH) reaction, or after immunization with an allograft, tumor cell or virally transformed or chemically modified target cell. The lytic phenomenon is sometimes referred to as cell-mediated lympholysis (CML). These CD8-positive cells are distinct from NATURAL KILLER CELLS and NATURAL KILLER T-CELLS. There are two effector phenotypes: TC1 and TC2. Cell-Mediated Lympholytic Cells,Cytotoxic T Cells,Cytotoxic T Lymphocyte,Cytotoxic T-Lymphocytes,TC1 Cell,TC1 Cells,TC2 Cell,TC2 Cells,Cell Mediated Lympholytic Cells,Cell, Cell-Mediated Lympholytic,Cell, TC1,Cell, TC2,Cell-Mediated Lympholytic Cell,Cytotoxic T Cell,Cytotoxic T Lymphocytes,Cytotoxic T-Lymphocyte,Lymphocyte, Cytotoxic T,Lympholytic Cell, Cell-Mediated,Lympholytic Cells, Cell-Mediated,T Cell, Cytotoxic,T Lymphocyte, Cytotoxic,T Lymphocytes, Cytotoxic,T-Lymphocyte, Cytotoxic

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