title: Genes differentially expressed in medulloblastoma and fetal brain.
abstract: Serial analysis of gene expression (SAGE) was used to identify genes that might be involved in the development or growth of medulloblastoma, a childhood brain tumor. Sequence tags from medulloblastoma (10229) and fetal brain (10692) were determined. The distributions of sequence tags in each population were compared, and for each sequence tag, pairwise chi2 test statistics were calculated. Northern blot was used to confirm some of the results obtained by SAGE. For 16 tags, the chi2 test statistic was associated with a P value < 10(-4). Among those transcripts with a higher expression in medulloblastoma were the genes for ZIC1 protein and the OTX2 gene, both of which are expressed in the cerebellar germinal layers. The high expression of these two genes strongly supports the hypothesis that medulloblastoma arises from the germinal layer of the cerebellum. This analysis shows that SAGE can be used as a rapid differential screening procedure.
authors.affiliation: Department of Pediatric Oncology, Emma Kinderziekenhuis/Academic Medical Center, Neurozintuigen Laboratory, 1100 DE Amsterdam, The Netherlands.
authors.forename: E M
authors.initials: EM
authors.lastname: Michiels
authors.forename: E
authors.initials: E
authors.lastname: Oussoren
authors.forename: M
authors.initials: M
authors.lastname: Van Groenigen
authors.forename: E
authors.initials: E
authors.lastname: Pauws
authors.forename: P M
authors.initials: PM
authors.lastname: Bossuyt
authors.forename: P A
authors.initials: PA
authors.lastname: Voûte
authors.forename: F
authors.initials: F
authors.lastname: Baas
mesh_terms: D015152:Blotting, Northern / Q000379:methods; D001921:Brain / Q000196:embryology / Q000378:metabolism*; D002648:Child; D020224:Expressed Sequence Tags; D005260:Female; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental; D015972:Gene Expression Regulation, Neoplastic; D018398:Homeodomain Proteins; D006801:Humans; D008527:Medulloblastoma / Q000235:genetics*; D009419:Nerve Tissue Proteins / Q000235:genetics; D051857:Otx Transcription Factors; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D015534:Trans-Activators / Q000235:genetics; D014157:Transcription Factors / Q000235:genetics
chemical_list: D018398:Homeodomain Proteins; D009419:Nerve Tissue Proteins; C497659:OTX2 protein, human; D051857:Otx Transcription Factors; D012333:RNA, Messenger; D015534:Trans-Activators; D014157:Transcription Factors; C492123:ZIC1 protein, human