Wolverhampton Intellectual Repository and E-Theses >
Research Institutes >
Research Institute in Healthcare Science >
Cancer Research Group >
Microarray analysis of pediatric ependymoma identifies a cluster of 112 candidate genes including four transcripts at 22q12.1-q13.3.
this identifier to cite or link
to this item:
|Title: ||Microarray analysis of pediatric ependymoma identifies a cluster of 112 candidate genes including four transcripts at 22q12.1-q13.3.|
|Citation: ||Neuro-oncology, 7(1): 20-31|
|Publisher: ||Duke University Press|
|Issue Date: ||2005 |
|PubMed ID: ||15701279|
|Additional Links: ||http://neuro-oncology.dukejournals.org/cgi/content/abstract/7/1/20|
|Abstract: ||Ependymomas are glial cell-derived tumors characterized by varying degrees of chromosomal abnormalities and variability in clinical behavior. Cytogenetic analysis of pediatric ependymoma has failed to identify consistent patterns of abnormalities, with the exception of monosomy of 22 or structural abnormalities of 22q. In this study, a total of 19 pediatric ependymoma samples were used in a series of expression profiling, quantitative real-time PCR (Q-PCR), and loss of heterozygosity experiments to identify candidate genes involved in the development of this type of pediatric malignancy. Of the 12,627 genes analyzed, a subset of 112 genes emerged as being abnormally expressed when compared to three normal brain controls. Genes with increased expression included the oncogene WNT5A; the p53 homologue p63; and several cell cycle, cell adhesion, and proliferation genes. Underexpressed genes comprised the NF2 interacting gene SCHIP-1 and the adenomatous polyposis coli (APC)-associated gene EB1 among others. We validated the abnormal expression of six of these genes by Q-PCR. The subset of differentially expressed genes also included four underexpressed transcripts mapping to 22q12.313.3. By Q-PCR we show that one of these genes, 7 CBX7(22q13.1), was deleted in 55% of cases. Other genes mapping to cytogenetic hot spots included two overexpressed and three underexpressed genes mapping to 1q31-41 and 6q21-q24.3, respectively. These genes represent candidate genes involved in ependymoma tumorigenesis. To the authors' knowledge, this is the first time microarray analysis and Q-PCR have been linked to identify heterozygous/homozygous deletions.|
|Description: ||Metadata only. Full text available at links above.|
|MeSH: ||Brain Neoplasms|
Chromosomes, Human, Pair 22
Loss of Heterozygosity
Oligonucleotide Array Sequence Analysis
Reverse Transcriptase Polymerase Chain Reaction
|Appears in Collections: ||Cancer Research Group|
|Files in This Item:|
There are no files associated with this item.
|Related articles on PubMed|
Real-time quantitative PCR analysis of pediatric ependymomas identifies novel candidate genes including TPR at 1q25 and CHIBBY at 22q12-q13.
Karakoula K, Suarez-Merino B, Ward S, Phipps KP, Harkness W, Hayward R, Thompson D, Jacques TS, Harding B, Beck J, Thomas DG, Warr TJ
Identification of tumor-specific molecular signatures in intracranial ependymoma and association with clinical characteristics.
Modena P, Lualdi E, Facchinetti F, Veltman J, Reid JF, Minardi S, Janssen I, Giangaspero F, Forni M, Finocchiaro G, Genitori L, Giordano F, Riccardi R, Schoenmakers EF, Massimino M, Sozzi G
2006 Nov 20
|See all 97 articles|
All Items in WIRE are protected by copyright, with all rights reserved, unless otherwise indicated.