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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

AIM-2: a novel tumor antigen is expressed and presented by human glioma cells.

Antigen isolated from Immunoselected Melanoma-2 (AIM-2) was recently identified using melanoma-reactive CD8 T cells. AIM-2 antigen is expressed in a wide variety of tumor types, including neuroectodermal tumors, as well as breast, ovarian and colon carcinomas. In this study, we analyzed AIM-2 expression in glioblastoma multiforme (GBM) in primary cultured cells and established GBM cell lines. We found that the primary GBM cell lines expressed 88.4% and 93.0% of non-spliced and spliced AIM-2, respectively. Five out of seven of the established GBM cell lines expressed both non-spliced and spliced AIM-2. Furthermore, the C9 CTL clone, which is specific for AIM-2 peptide (RSDSGQQARY), efficiently recognized GBM tumor cells in an antigen-specific and HLA-A1 restricted manner. IFN-gamma treatment of the GBM tumor cells dramatically increased HLA-A1 expression levels and, consequently, increased CTL recognition of the treated tumor cells. More importantly, seven out of 12 HLA-A1 and AIM-2 positive patients from our dendritic cell clinical trial generated AIM-2 specific CTL activity in their PBMC after vaccinations. These data indicate that AIM-2 could be used as a tumor antigen target for monitoring vaccine trials or to develop antigen specific active immunotherapy for glioma patients.[1]


  1. AIM-2: a novel tumor antigen is expressed and presented by human glioma cells. Liu, G., Yu, J.S., Zeng, G., Yin, D., Xie, D., Black, K.L., Ying, H. J. Immunother. (2004) [Pubmed]
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