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TranscriptomicsThe miR-17/92 Polycistron Is Up-regulated in Sonic Hedgehog-Driven Medulloblastomas and Induced by N-myc in Sonic Hedgehogâ??Treated Cerebellar Neural Precursors
Medulloblastoma is the most common malignant pediatric brain tumor, and mechanisms underlying its development are poorly understood. We identified recurrent amplification of the miR-17/92 polycistron proto-oncogene in 6% of pediatric medulloblastomas by high-resolution single-nucleotide polymorphism...
ORGANISM(S): Homo sapiens 
2010-04-14 | E-GEOD-21166 | biostudies-arrayexpress
TranscriptomicsComparative genomic hybridization of kidney samples from Wilms tumor patients to accurately map 1p13 breakpoints
Wilms tumour karyotypes frequently exhibit recurrent, large-scale chromosomal imbalances, among the most common of which are concurrent loss of 1p and gain of 1q. We have previously identified a novel breakpoint at 1p13 by 1Mb-spaced array CGH, and undertook a fine-tiling oligonucleotide array appro...
ORGANISM(S): Homo sapiens 
2007-03-21 | E-TABM-155 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of kidney samples from Wilms tumor patients to examine down- and up-regulation of genes either side of 1p13 breakpoints
Wilms tumour karyotypes frequently exhibit recurrent, large-scale chromosomal imbalances, among the most common of which are concurrent loss of 1p and gain of 1q. We have previously identified a novel breakpoint at 1p13 by 1Mb-spaced array CGH, and undertook a fine-tiling oligonucleotide array appro...
ORGANISM(S): Homo sapiens 
2007-03-21 | E-TABM-164 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of human and mouse ependymomas: Comparative genomics matches mutations and cells to generate faithful ependymoma models
Genomic technologies have unmasked molecularly distinct subgroups among tumors of the same histological type; but understanding the biologic basis of these subgroups has proved difficult since their defining alterations are often numerous, and the cellular origins of most cancers remain unknown. We...
ORGANISM(S): Homo sapiens 
2010-07-19 | E-GEOD-21687 | biostudies-arrayexpress
TranscriptomicsGene Set Enrichment Analysis reveals lineage relationships between mouse and human gliomas and identifies stem cells and PNET as distinct entities
Murine and human genome-wide microarray expression profiles (including GSE19404) were compared using Partek and Gene Set Enrichment Analysis (GSEA) in order to identify similarities. A murine PNET-like tumour by morphology was found to resemble human ATRT, whereas experimental glioma resembled a par...
ORGANISM(S): Mus musculus 
2013-07-29 | E-GEOD-42515 | biostudies-arrayexpress
TranscriptomicsIntegrated molecular genetic profiling of pediatric-high grade gliomas reveals key differences with adult disease
Purpose: To define copy number alterations and gene expression signatures underlying pediatric high-grade glioma (HGG). Patients and Methods: We conducted a high-resolution analysis of genomic imbalances in 78 de novo pediatric HGG, including 7 diffuse intrinsic pontine gliomas, and 10 HGG cases ar...
ORGANISM(S): Homo sapiens 
2010-06-15 | E-GEOD-19578 | biostudies-arrayexpress
TranscriptomicsHigh-resolution copy number analysis of medulloblastoma
We used high-resolution SNP genotyping to identify regions of genomic gain and loss in the genome of 212 medulloblastomas, a malignant pediatric brain tumor. Focal amplifications of fifteen known oncogenes and focal deletions of twenty known tumor suppressor genes (TSG) were revealed, most not prev...
ORGANISM(S): Homo sapiens 
2010-04-06 | E-GEOD-14437 | biostudies-arrayexpress
Genomicsena-DATASET-SC-16-09-2014-14:22:12:125-153 - samples
Description not provided
EGAD00001001014 | EGA
Genomicsena-DATASET-SC-16-09-2014-14:25:48:324-154 - samples
Description not provided
EGAD00001001015 | EGA
GenomicsOrigins and functional consequence of somatic mitochondrial DNA mutations
Recent sequencing studies have extensively explored the somatic alterations present in the nuclear genomes of cancers. Although mitochondria control energy metabolism and apoptosis, the origins and impact of cancer-associated mutations in mitochondrial DNA (mtDNA) are unclear. Here, we analysed soma...
EGAS00001000968 | EGA
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