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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression profiles for paediatric brain tumours

ABSTRACT: In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify gene expression profiles We analysed gene expression in paediatric brain tumours as compared to normal adult brain in order to understand the molecular profiles. Our cohort included 15 pilocytic astrocytomas, 3 diffuse astrocytomas, 2 anaplastic astrocytomas, 5 glioblastomas, 14 ependymomas, 9 medulloblastomas, 5 atypical teratoid/rhabdoid tumours, 4 choroid plexus papillomas, 8 adult brain and 8 foetal brain controls.

ORGANISM(S): Homo sapiens

SUBMITTER: Denise Sheer

PROVIDER: E-GEOD-42656 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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MicroRNA expression profiles for paediatric brain tumours

Project description:In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify microRNA profiles We analysed the microRNA profiles in paediatric brain tumours as compared to normal adult brain. Our cohort included 14 pilocytic astrocytomas, 3 diffuse astrocytomas, 2 anaplastic astrocytomas, 5 glioblastomas, 14 ependymomas, 9 medulloblastomas, 5 atypical teratoid/rhabdoid tumours, 4 choroid plexus papillomas, 1 papillary glioneuronal, and 7 adult brain controls.

2015-12-10 | E-GEOD-42657 | biostudies-arrayexpress

Expression profiles for paediatric brain tumours

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2013-07-29 | E-GEOD-42658 | biostudies-arrayexpress

Identification of novel candidate oncogenes in chromosomal region 17p11.2-p12 in human osteosarcoma

Project description:in 25% - 30% of all OS cases the chromosome region 17p11.2-p12 is aberrant. Using SNP array in conjunction with expression microarrays we try to identify genes which can be classified as oncogens or are in someway benificial to the survival of the tumor. To identify minimal significant amplified region(s) that is(are) aberrant in osteosarcoma tumorigenesis, with a special emphasis on but not limitied to chromosome region 17p11.2-p12

2013-04-15 | E-GEOD-32964 | biostudies-arrayexpress

miR-132 mediates renal fibrosis

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-02-16 | E-GEOD-76550 | biostudies-arrayexpress

miR-132 mediates renal fibrosis: Genome-wide analysis of gene expression in foxd1-derivative interstital cells derived from fibrotic kidneys from mice treated with antagomir-132 or scramblemir

Project description:Chronic kidney disease is associated with progressive renal fibrosis, where perivascular cells give rise to the majority of Î±-SMA positive myofibroblasts. We sought to identify pericytic miRNAs that could serve as a target to decrease myofibroblast formation. We induced kidney fibrosis in FoxD1-GC;Z/Red-mice by unilateral ureteral obstruction (UUO) followed by FACS sorting of dsRed-positive FoxD1-derivative cells and miRNA profiling. MiR-132 selectively increased 21-fold during pericyte-to-myofibroblast formation whereas miR-132 was only 2.5-fold up in total kidney lysates (both in UUO and ischemia-reperfusion injury). MiR-132 silencing in UUO decreased collagen deposition (35%) and tubular apoptosis. Immunohistochemistry, western blot and qRT-PCR confirmed a similar decrease in interstitial Î±-SMA+ cells. Pathway analysis identified a rate-limiting role for miR-132 in myofibroblast proliferation that was confirmed in vitro. Indeed, antagomir-132 treated mice displayed a reduction in the number of proliferating, ki67+ interstitial myofibroblasts. Interestingly, this was selective for the interstitial compartment and did not impair the reparative proliferation of tubular epithelial cells, as evidenced by an increase in ki67+ epithelial cells, as well as increased (p-)RB1, Cyclin-A and decreased RASA1, p21 levels in kidney lysates. Taken together, silencing miR-132 counteracts the progression of renal fibrosis by selectively decreasing myofibroblast proliferation and could potentially serve as a novel antifibrotic therapy. Total RNA obtained from FACS sorted mouse renal FoxD1-derivatve interstitial cells from mice that were treated with antagomir-132 or scramblemir and underwent UUO (n=4)

2016-02-16 | E-GEOD-76548 | biostudies-arrayexpress

Genome wide gene expression array analysis in T-ALL

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2013-07-01 | E-GEOD-41621 | biostudies-arrayexpress

RABL6A promotes G1-S phase progression and pancreatic neuroendocrine tumor cell proliferation in an Rb1-dependent manner

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2014-07-01 | E-GEOD-53778 | biostudies-arrayexpress

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2014-04-15 | E-GEOD-55578 | biostudies-arrayexpress

Genome-wide analysis of FSH and LH dependent gene expression and the crosstalk between these two pathways in mice testes

Project description:Effects of the absence of a functional LH receptor and/or expression of a constitutively active FSH receptor on gene expression in the gonads of male mice were studied. The results provide insights into the roles of the hormones LH and FSH in male reproduction. The main conclusion is that constant strong FSH stimulation is able to rescue the impaired spermatogenesis and fertility of male mice in the absence of LH signalling. Total RNA was obtained from testis of 12 weeks old mice of different genotypes and extracted using Trizol followed by clean up with Qiage RNeasy MinElute Cleanup Kit

2016-01-20 | E-GEOD-76945 | biostudies-arrayexpress

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