Two proliferation-related proteins, TYMS and PGK1, could be new cytotoxic T lymphocyte-directed tumor-associated antigens of HLA-A2+ colon cancer

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
S ShichijoKyogo Itoh

Abstract

The purpose of this work was to provide a scientific basis for specific immunotherapy of colon cancer. This study focused on identification of colon tumor-associated antigens and HLA-A2-restricted and tumor-reactive cytotoxic T lymphocytes (CTLs) generated from tumor-infiltrating lymphocytes of a colon cancer patient. A gene expression cloning method was used to identify genes coding for tumor antigens. Fifty-six peptides with HLA-A2-binding motifs encoded by these proteins were examined for their ability to induce HLA-A2-restricted and tumor-reactive CTLs. We identified the following three genes coding for proliferation-related proteins: thymidylate synthase (TYMS), which is involved in chemoresistance (5-fluorouracil); 5'-aminoimidazole-4-carboxamide-1-beta-d-ribonucleotide transfolmylase/inosinicase (AICRT/I); and phosphoglycerate kinase 1 (PKG1), which was secreted by tumor cells and involved in the angiogenic process. TYMS was preferentially expressed in tumor cells, whereas AICRT/I and PKG1 were equally expressed in both cancer cells and normal tissues at the mRNA level. Among 56 peptides with HLA-A2-binding motifs encoded by these proteins, 8 peptides were recognized by the CTLs, and 5 of 8 peptides were also recognized ...Continue Reading

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Citations

Dec 19, 2014·BMC Medical Genomics·Lars OlsenVladimir Brusic
Sep 25, 2008·International Journal of Cancer. Journal International Du Cancer·Shye-Jye TangKuang-Hui Sun
Dec 23, 2009·International Journal of Cancer. Journal International Du Cancer·Rolf K SwobodaDorothee Herlyn
Aug 2, 2005·Immunology Letters·Yuriy V ShebzukhovSergei A Nedospasov
Jun 9, 2005·European Journal of Cancer : Official Journal for European Organization for Research and Treatment of Cancer (EORTC) [and] European Association for Cancer Research (EACR)·Shigeki ShichijoKyogo Itoh
Jun 2, 2006·Molecular & Cellular Proteomics : MCP·Nilofer S AzadElise C Kohn
Jul 28, 2017·International Journal of Molecular Sciences·Huijun XieQinhe Yang

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