Abstract
Objectives
Atypical teratoid/rhabdoid tumor (AT/RT) and medulloblastoma (MB) are the most malignant primary brain tumors in early childhood. AT/RT is frequently misdiagnosed as primitive neuroectodermal tumor/medulloblastoma. The biological features and clinical outcomes of AT/RT and MB are extremely different. In this study, we used microarray as a platform to distinguish these two tumors with the definitive diagnostic marker as well as the profiling of expression genes.
Methods
In order to clarify the pathogenesis and find the biological markers for AT/RT, we established a derivative AT/RT primary cell culture. The differential profiling between AT/RT and MB were analyzed by using microarray method.
Results
With the use of the microarray method, we demonstrated that 15 genes were significantly changed (at least 5-fold in upregulation and 1/5-fold in downregulation) between AT/RT and MB in tissues and cell lines. The quantitative reverse transcription-polymerase chain reaction analyses further confirmed that mRNA expression levels of SERPINI1 and osteopontin were highly expressed in AT/RT cells and tissues than those in MB. Importantly, our microarray result suggested that AT/RT presents the stemness-like pattern and expression profiling of embryonic stem cells as well as high mRNA expressions of Oct-4, Nanog, Sox-2, and c-Myc.
Conclusions
Our study demonstrated the differential gene expression profiling between AT/RT and MB. Based on the microarray findings, AT/RTs present embryonic stem-like gene recapitulation and further provide novel insights into their underlying biology.
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Acknowledgment
This study was supported by research grants from the National Science Council (NSC-97-3111-B-075-001-MY3), Taipei Veterans General Hospital (V96C1-151, V96E1-004, V96ER2-016, V96E2-010), Yen-Tjing-Ling Medical Foundation, Taipei City Hospital (96001-62-014, 96001-62-018, 96002-62-092), National Yang-Ming University (3T-MRI & Genomic Center, Ministry of Education, Aim for the Top University Plan), Technology Development Program for Academia, Department of Industrial Technology, and Ministry of Economic Affairs, Taiwan.
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Chung-Lan Kao, Yi-Yen Lee, and Guang-Yuh Chiou contributed equally to this work.
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Ma, HI., Kao, CL., Lee, YY. et al. Differential expression profiling between atypical teratoid/rhabdoid and medulloblastoma tumor in vitro and in vivo using microarray analysis. Childs Nerv Syst 26, 293–303 (2010). https://doi.org/10.1007/s00381-009-1016-2
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DOI: https://doi.org/10.1007/s00381-009-1016-2