| Expression of Cancer-Testis Genes in Brain Tumors. |
| Myoung Hee Lee, Eun Ik Son, Ealmaan Kim, In Soo Kim, Man Bin Yim, Sang Pyo Kim |
1Department of Neurosurgery, Keimyung University School of Medicine, Daegu, Korea. drson@dsmc.or.kr
2Department of Pathology, Keimyung University School of Medicine, Daegu, Korea. |
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| ABSTRACT |
OBJECTIVE
Cancer-testis (CT) genes are considered promising candidates for immunotherapeutic approaches. The aim of this study was to investigate which CT genes should be targeted in immunotherapy for brain tumors.
METHODS: We investigated the expression of 6 CT genes (MAGE-E1, SOX-6, SCP-1, SSX-2, SSX-4, and HOMTES-85) using reverse-transcription polymerase chain reaction in 26 meningiomas and 32 other various brain tumor specimens, obtained from the patients during tumor surgery from 2000 to 2005.
RESULTS: The most frequently expressed CT genes of meningiomas were MAGE-E1, which were found in 22/26 (85%) meningioma samples, followed by SOX-6 (9/26 or 35%).
Glioblastomas were most frequently expressed SOX-6 (6/7 or 86%), MAGE-E1 (5/7 or 71%), followed by SSX-2 (2/7 or 29%) and SCP-1 (1/7 or 14%). However, 4 astrocytomas, 3 anaplastic astrocytomas, and 3 oligodendroglial tumors only expressed MAGE-E1 and SOX-6. Schwannomas also expressed SOX-6 (5/6 or 83%), MAGE-E1 (4/6 or 67%), and SCP-1 (2/6 or 33%).
CONCLUSION: The data presented here suggest that MAGE-E1 and SOX-6 genes are expressed in a high percentage of human central nervous system tumors, which implies the CT genes could be the potential targets of immunotherapy for human central nervous system tumors. |
| Key Words:
Cancer-testis gene; Brain tumor; MAGE-E1; SOX-6; SCP-1; SSX-2 |
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