Genes (23)
Species: human : 23 | |
Human | CITED4 | 163732 | Cbp/p300-interacting transactivator, with Glu/Asp-rich carboxy-terminal domain, 4 | CITED4 is epigenetically silenced in the vast majority of oligodendroglial tumours with 1p and 19q deletions | Human | OLIG1 | 116448 | oligodendrocyte transcription factor 1 | New oligodendrocytic lineage markers, such as OLIG1/2 gene, will probably help to define the real spectrum of oligodendroglial tumors, which may include a wide variety of tumors with very different prognoses. Olig1 and Olig2 were expressed in 26/30 (87%) and 28/30 (93%) of oligodendroglial tumors respectively but in only 9% of glioblastomas (1/11). Surprisingly, OLIG1 and OLIG2 expressionwas not limited to oligodendroglial tumors, but was observed in astrocytic lesions as well, independent of tumor grade. | Human | RTN4 | 57142 | reticulon 4 | Nogo-A expression was negatively correlated with the malignancy grade of oligodendroglial tumors | Human | SOX6 | 55553 | SRY (sex determining region Y)-box 6 | Immunohistochemical analysis revealed that astrocytic and oligodendroglial tumors expressed SOX6; neuronal-glial cell tumors (central neurocytoma) and embryonal tumors (medulloblastoma), which arise from multipotential stem cell precursors, also showed a high intensity of SOX6 staining. | Human | DEC1 | 50514 | deleted in esophageal cancer 1 | DEC1 expression is found in the majority of 1p-aberrant oligodendroglial neoplasms; its immunohistochemical detection does not correlate with tisue hypoxia in this type of primary brain tumor Materials and methods. 44 primary and 16 recurrent oligodendroglial neoplasms with 1p-aberrations were investigated immunohistochemically for the expression of DEC1, HIF-1alpha, and CA9. DEC1 expression in 1p-aberrant oligodendroglial neoplasms. In our study, we assessed the expression of DEC1 in 1p aberrant oligodendroglial neoplasms and its association with necrosis and expression of hypoxia-inducible factor 1alpha (HIF-1alpha), carbonic anhydrase-9 (CA9), and vascular endothelial growth factor-mRNA (VEGF). | Human | OLIG2 | 10215 | oligodendrocyte lineage transcription factor 2 | Additionally, we analysed oligodendroglial neoplasms with numerous gliofibrillary and minigemistocytic oligodendrocytes for OLIG2/glial fibrillary acidic protein (GFAP) coexpression and central neurocytoma for coexpression of neurone-specific nuclear protein (NeuN) and OLIG2 using double immunofluorescent labelling and confocal laser scanning microscopy. OLIG2 should prove a useful marker for the diagnosis of oligodendroglial tumours. Ten antibodies [glial fibrillary acidic protein (GFAP), Olig2, vimentin, epithelial membrane antigen (EMA), cytokeratin (AE1/AE3), alpha-internexin, nestin, pinealocytes PP5, aquaporin-4 (AQP4) M13d and AQP4M13e] discriminated between astrocytomas and oligodendroglial tumors. We investigated the expression of OLIG2 by in-situ hybridisation in 21 brain tumours: nine grade II and III oligodendrogliomas, three grade II oligoastrocytomas, and nine non-oligodendroglial tumours (four grade IV astrocytomas, two meningiomas, a dysembryoplastic neuroepithelial tumour, and two metastases). The expression of Olig2 transcript has been demonstrated in human oligodendroglial tumors, although the protein expression has not been studied extensively. CONCLUSIONS: Widespread OLIG2 expression discriminates oligodendroglial neoplasms or DNTs from other clear cell primary brain tumour types. OLIG2 expression was predominant over ID2 expression in oligodendroglial tumors, while ID2 expression was predominant over OLIG2 expression in astrocytic tumors Olig1 and Olig2 were expressed in 26/30 (87%) and 28/30 (93%) of oligodendroglial tumors respectively but in only 9% of glioblastomas (1/11). METHODS AND RESULTS: We analysed OLIG2 expression in 60 oligodendroglial neoplasms (57 with and three without chromosome 1p aberration), 10 central neurocytomas, 10 clear cell ependymomas, nine dysembryoplastic neuroepithelial tumours (DNTs) and two clear cell meningiomas using immunohistochemistry. All oligodendroglial neoplasms and DNTs showed widespread OLIG2 expression. OLIG2 as a specific marker of oligodendroglial tumour cells. Surprisingly, OLIG1 and OLIG2 expressionwas not limited to oligodendroglial tumors, but was observed in astrocytic lesions as well, independent of tumor grade. | Human | DIRAS3 | 9077 | DIRAS family, GTP-binding RAS-like 3 | DIRAS3 is a novel, prognostically relevant candidate gene that is frequently methylated and silenced in oligodendroglial tumors with 1p deletion | Human | PROM1 | 8842 | prominin 1 | cancer stem cells and expression of CD133 is predictive of prognosis in high-grade oligodendroglial tumors | Human | BHLHE40 | 8553 | basic helix-loop-helix family, member e40 | In our study, we assessed the expression of DEC1 in 1p aberrant oligodendroglial neoplasms and its association with necrosis and expression of hypoxia-inducible factor 1alpha (HIF-1alpha), carbonic anhydrase-9 (CA9), and vascular endothelial growth factor-mRNA (VEGF). DEC1 expression in 1p-aberrant oligodendroglial neoplasms. DEC1 expression is found in the majority of 1p-aberrant oligodendroglial neoplasms and does not correlate with necrosis or expression of HIF-1alpha, CA9, VEGF. | Human | TP73 | 7161 | tumor protein p73 | loss of reduced TP73 transcript expression through promoter hypermethylation may contribute to the tumorigenesis of oligodendroglial tumors | Human | TP53 | 7157 | tumor protein p53 | findings suggest no association between oligodendroglial tumors and the SNP in codon 72 of TP53; also no correlation was found among the TP53 codon 72 polymorphism and prognosis, p53 expression, and chromosomes 1p and 19q status MDM2 SNP309, alone or in combination with TP53 R72P, was not associated with oligodendroglial tumors | Human | SLC2A5 | 6518 | solute carrier family 2 (facilitated glucose/fructose transporter), member 5 | The number of GLUT5-positive microglia was significantly (P _lt_ 0.001) higher in astrocytic tumours than in oligodendroglial tumours. | Human | SLC2A1 | 6513 | solute carrier family 2 (facilitated glucose transporter), member 1 | Expression of GLUT-1 is significantly reduced in low-grade oligodendroglial tumors harboring LOH 1p | Human | MMP10 | 4319 | matrix metallopeptidase 10 (stromelysin 2) | To determine the pattern of MMP expression in astrocytic and oligodendroglial tumors, sections of astrocytic and oligodendroglial differentiated glioblastomas (WHO grade IV), as well as of anaplastic oligodendrogliomas (WHO grade III) and anaplastic gemistocytic astrocytomas (WHO grade III) were immunostained for MMP-2, MMP-7, MMP-9, MMP-10 and MMP-11. | Human | MGMT | 4255 | O-6-methylguanine-DNA methyltransferase | Frequent promoter hypermethylation and low expression of the MGMT gene is associated with oligodendroglial tumors | Human | MAP2 | 4133 | microtubule-associated protein 2 | Our findings demonstrate MAP2 expression in astrocytic and oligodendroglial neoplasms. | Human | HIF1A | 3091 | hypoxia inducible factor 1, alpha subunit (basic helix-loop-helix transcription factor) | Materials and methods. 44 primary and 16 recurrent oligodendroglial neoplasms with 1p-aberrations were investigated immunohistochemically for the expression of DEC1, HIF-1alpha, and CA9. In our study, we assessed the expression of DEC1 in 1p aberrant oligodendroglial neoplasms and its association with necrosis and expression of hypoxia-inducible factor 1alpha (HIF-1alpha), carbonic anhydrase-9 (CA9), and vascular endothelial growth factor-mRNA (VEGF). DEC1 expression is found in the majority of 1p-aberrant oligodendroglial neoplasms and does not correlate with necrosis or expression of HIF-1alpha, CA9, VEGF. | Human | EMP3 | 2014 | epithelial membrane protein 3 | EMP3 overexpression is associated with oligodendroglial tumors | Human | EGFR | 1956 | epidermal growth factor receptor | Mutations and amplification/overdose in the EGFR gene are present in low-grade oligodendroglial tumours, and may contribute to the development of these brain neoplasms | Human | DMBT1 | 1755 | deleted in malignant brain tumors 1 | Mutation analysis of DMBT1 in glioblastoma, medulloblastoma and oligodendroglial tumors. We also assessed homozygous deletions of the DMBT1 gene in the series and found that 16 of 95 (5 glioblastomas, 5 medulloblastomas, 6 oligodendroglial tumors; total 17%) tumors harbor such alteration. We characterized 138 of 189 (73%) available primary and recurrent oligodendroglial neoplasms from 80 patients, utilizing paired FISH probes for 1p32/1q42, 19p13/19q13, CEP7/EGFR, CEP9/p16, and PTEN/DMBT1. A total of 102 primary brain tumors, consisting of 25 glioblastoma multiforme, 24 medulloblastoma and 53 oligodendroglial tumors, were analyzed by conformation-sensitive gel electrophoresis in all 54 coding exons of DMBT1. | Human | CDKN2C | 1031 | cyclin-dependent kinase inhibitor 2C (p18, inhibits CDK4) | Our data thus provide evidence for more than a single oligodendroglioma-associated tumor suppressor gene on 1p and implicate CDKN2C as a candidate tumor suppressor gene altered in a low fraction of oligodendroglial tumors. Loss of heterozygosity on 1p, mutation(s), homozygous deletion(s), and expression of p18 in 30 oligodendroglial tumors were investigated. Identification of two distinct deleted regions on the short arm of chromosome 1 and rare mutation of the CDKN2C gene from 1p32 in oligodendroglial tumors. | Human | CDKN2B | 1030 | cyclin-dependent kinase inhibitor 2B (p15, inhibits CDK4) | Oligodendroglial tumors frequently demonstrate hypermethylation of the CDKN2A (MTS1, p16INK4a), p14ARF, and CDKN2B (MTS2, p15INK4b) tumor suppressor genes. Taken together, our results indicate that hypermethylation of CDKN2A, p14ARF, and CDKN2B is an important epigenetic mechanism by which oligodendroglial tumors may escape from p53- and pRb-dependent growth control. We investigated 34 oligodendroglial tumors (7 oligodendrogliomas, 11 anaplastic oligodendrogliomas, 8 oligoastrocytomas, and 8 anaplastic oligoastrocytomas) for deletion, mutation, hypermethylation, and expression of the CDKN2A (MTS1, p16INK4a), p14ARF, and CDKN2B (MTS2, p15INK4b) tumor suppressor genes at 9p21. | Human | CA9 | 768 | carbonic anhydrase IX | CA IX was proved to be an independent prognostic indicator in oligodendroglial brain tumors, and it also correlates reversely with cell proliferation |
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