Identification of a human leukocyte antigen-A24-restricted T-cell epitope derived from interleukin-13 receptor α2 chain, a glioma-associated antigen: Laboratory investigation

Shinji Shimato, Atsushi Natsume, Toshihiko Wakabayashi, Kunio Tsujimura, Norimoto Nakahara, Jun Ishii, Motokazu Ito, Yoshiki Akatsuka, Kiyotaka Kuzushima, Jun Yoshida

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Object. The human leukocyte antigen-A24 (HLA-A24) allele is highly expressed in Asians. This allele is expressed in 60% of the Japanese population and in a significant number of people of other ethnicities. The interleukin-13 type α2 receptor (IL-13Rα2) has been shown to be a glioma-specific antigen, and is abundantly expressed in a majority of high-grade astrocytomas. In this study, the authors first investigated the suitability of IL-13Rα2 as a target antigen of malignant glioma cells, and then identified a potential HLA-A24-restricted peptide derived from IL-13Rα2. Methods. The expression of IL-13Rα2 in glioma tissues was examined by reverse transcription- polymerase chain reaction analysis. To identify the desired epitope, the authors selected 5 candidate peptides from IL-13Rα2 that were predicted to bind to HLA-A24. The lytic activity of cytotoxic T lymphocytes (CTLs) induced by peptide-pulsed dendritic cells was analyzed against various glioma cell lines and freshly isolated human glioma cells. Results. In a series of glioma tissues obtained in 29 patients, the authors found that > 50% of high-grade gliomas expressed IL-13Rα2. Of the 5 peptides tested, P174 (WYEGLDHAL) was found to be the most useful for the induction of HLA-A24-restricted and IL-13Rα2-specific CTLs. A CTL line induced by P174 also showed antigen-specific cytotoxicity to surgically removed glioma cells depending on their level of expression of IL-13Rα2 and HLA-A24. Conclusions. Interleukin-13Rα2 is a glioma-specific antigen, and the immunogenic peptide P174 may contribute to a peptide-based immunotherapy against malignant glioma cells expressing HLA-A24.

元の言語English
ページ(範囲)117-122
ページ数6
ジャーナルJournal of Neurosurgery
109
発行部数1
DOI
出版物ステータスPublished - 01-07-2008

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All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology

これを引用

Shimato, S., Natsume, A., Wakabayashi, T., Tsujimura, K., Nakahara, N., Ishii, J., Ito, M., Akatsuka, Y., Kuzushima, K., & Yoshida, J. (2008). Identification of a human leukocyte antigen-A24-restricted T-cell epitope derived from interleukin-13 receptor α2 chain, a glioma-associated antigen: Laboratory investigation. Journal of Neurosurgery, 109(1), 117-122. https://doi.org/10.3171/JNS/2008/109/7/0117