Volume 19, Issue 3 pp. 346-351
Article
Free Access

Expression of a newly defined tumor-rejection antigen SART3 in musculoskeletal tumors and induction of HLA class I-restricted cytotoxic T lymphocytes by SART3-derived peptides

Naotake Tsuda

Naotake Tsuda

Department of Immunology, School of Medicine, Kurume University, Kurume 830-0011, Japan

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Kumiko Murayama

Kumiko Murayama

Cancer Vaccine Development Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume 830-0011, Japan

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Hyota Ishida

Hyota Ishida

Department of Immunology, School of Medicine, Kurume University, Kurume 830-0011, Japan

Department of Orthopedic Surgery, School of Medicine, Kurume University, Kurume 830-0011, Japan

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Kazuko Matsunaga

Kazuko Matsunaga

Cancer Vaccine Development Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume 830-0011, Japan

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Setsuro Komiya

Setsuro Komiya

Department of Orthopedic Surgery, School of Medicine, Kurume University, Kurume 830-0011, Japan

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Kyogo Itoh

Kyogo Itoh

Department of Immunology, School of Medicine, Kurume University, Kurume 830-0011, Japan

Cancer Vaccine Development Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume 830-0011, Japan

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Akira Yamada

Corresponding Author

Akira Yamada

Department of Immunology, School of Medicine, Kurume University, Kurume 830-0011, Japan

Cancer Vaccine Development Division, Research Center for Innovative Cancer Therapy, Kurume University, Kurume 830-0011, Japan

Department of Immunology, School of Medicine, Kurume University, Kurume 830-0011, Japan, Tel.: +81-942-31-7744; fax: +81-942-31-7745Search for more papers by this author
First published: 01 January 2006
Citations: 27

Abstract

We recently reported that a SART3 tumor-rejection antigen possessing tumor epitopes is capable of inducing HLA class I-restricted and tumor-specific cytotoxic T lymphocytes in cancer patients. We studied the expression of the SART3 protein in musculoskeletal tumors to find a molecule for potential use in tumor-specific immunotherapy. The SART3 was detected at protein levels in 100% of the osteosarcoma cell lines (n = 20), in 50% of the musculoskeletal tumor tissue specimens (n = 32), and at notable levels in 67% of osteosarcoma tissues (n = 9) and malignant fibrous histiocytosis tissues (n = 9), respectively. SART3-derived peptides at positions 109-118 and 315-323 induced HLA-A24-restricted tumor-specific cytoxic T lymphocytes from peripheral blood mononuclear cells of patients with osteosarcoma or malignant fibrous histiocytosis. These peptide-induced cytotoxic T lymphocytes recognized HLA-A24+ SART3+ osteosarcoma cells but not HLA-A24 or SART3 cells. These results suggest that the SART3 protein and its derived peptides could be molecules appropriate for use in specific immunotherapies for approximately 60% of HLA-A24+ patients with osteosarcoma or malignant fibrous histiocytosis. © 2001 Orthopaedic Research Society. Published by Elsevier Science Ltd. All rights reserved.

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