Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

58 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Base resolution maps of mutations, 5-methylcytosine and 5-hydroxymethylcytosine, and transcriptome of blood, tumour and margin samples from a glioblastoma multiforme patient

ABSTRACT: Glioblastoma multiforme is the most common and aggressive type of brain cancer. Little is known about the complex relationship between genomic and epigenomic as tumour progresses. We present the following base resolution whole genome maps of matched tumour/margin and blood samples from a glioblastoma multiforme patient:
* Single nucleotide variations (SNVs), copy number variations (CNVs) and structural variations (SVs) as revealed by DNA sequencing.

* 5-methylcytosine and 5-hydroxymethylcytosine levels obtained using (oxidative)bisulfite sequencing.

* Transcript levels produced using RNA sequencing.

For the three samples with very large bam raw data files ('Blood DNA-seq', 'Margin DNA-seq' and 'Tumour DNA-seq'), bai index files are available from https://www.ebi.ac.uk/arrayexpress/files/E-MTAB-5171/E-MTAB-5171.additional.1.zip

INSTRUMENT(S): Illumina HiSeq 2500

ORGANISM(S): Homo sapiens

SUBMITTER: Sergio Martnez Cuesta

PROVIDER: E-MTAB-5171 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Application of Two-Dimensional Difference Gel Electrophoresis to Identify Protein Changes between Center, Margin, and Adjacent Non-Tumor Tissues Obtained from Non-Small-Cell Lung Cancer with Adenocarcinoma Subtype

Project description:Lung cancer is responsible for the most cancer-related mortality worldwide and the mechanism of its development is poorly understood. Proteomics has become a powerful tool offering vital knowledge related to cancer development. Using a two-dimensional difference gel electrophoresis (2D-DIGE) approach, we sought to compare tissue samples from non-small-cell lung cancer (NSCLC) patients, exactly adenocarcinoma (ADC), taken from the tumor center and tumor margin and control (adjacent non-tumor) tissues . We found 22 differentially abundant spots representing 17 proteins differentiating center and margin. Sixty eight proteins; represented by 79 spots :40, 20, and 19 spots differed between the control and center and margin, control and center, and control and margin, respectively. Twenty six significant canonical pathways were identified, including Rho signaling pathways, a semaphorin neuronal repulsive signaling pathway, and epithelial adherens junction signaling. Proteins differentiating the tumor center and tumor margin were linked to cancer invasion and progression, including cell migration, adhesion and invasion, cytoskeletal structure, protein folding, anaerobic metabolism, tumor angiogenesis, EMC transition, epithelial adherens junctions, and inflammatory responses.

2022-05-20 | PXD032736 | Pride

Project description:Lung cancer is responsible for the most cancer-related mortality worldwide and the mechanism of its development is poorly understood. Proteomics has become a powerful tool offering vital knowledge related to cancer development. Using a two-dimensional difference gel electrophoresis (2D-DIGE) approach, we sought to compare tissue samples from non-small-cell lung cancer (NSCLC) patients, exactly squamous cell carcinoma (SCC), taken from the tumor center and tumor margin and control (adjacent non-tumor) tissues. We found and 21 spots representing 20 proteins differentiating center and margin. We found 111 differentially expressed protein spots representing 95 proteins; 84, 7, and 20 spots differed between the control and center and margin, control and center, and control and margin, respectively. Nine significant canonical pathways were identified, including hypoxia-inducible factor-1α signaling, thyroid hormone biosynthesis, and phagosome maturation. Several pathways related to disease and function were identified as related to cell death and survival, and several related to cancer, organismal injury, and abnormalities. Proteins differentiating the tumor center and tumor margin were linked to cancer invasion and progression, including cell migration, adhesion and invasion, cytoskeletal structure, protein folding, anaerobic metabolism, tumor angiogenesis, epithelialmesenchymal transition, epithelial adherens junctions, and inflammatory responses.

2022-05-20 | PXD032962 | Pride

RNA seq of rectal tumour tissue and paired healthy tissue, with EpCAM purification

Project description:Tumour tissue was immediately obtained post-surgery along with paired healthy tissue near (<2cm from tumour margin) and far (>10cm) from the tumour site. Each tissue was dissociated and stained with flow cytometry antibodies and sorted by FACS into Live/Dead-negative EpCAM-positive CD3-negative populations. An additional sample was passed through the FACS however no sorting was applied (control for the effect of sorting). Total RNA was purified and tissues compared for gene expression to identify potential hits that were assessed for protein expression and immunogenicity in later experiments.

2020-02-27 | E-MTAB-8803 | biostudies-arrayexpress

Copy Number Variation in Neuroblastoma

Project description:Neuroblastoma is a tumour of the sympathetic nervous system, with a clinical phenotype resulting from complex patterns of genetic abnormalities, accounting for the most common extracranial neoplasia in childhood. Here we report 44 copy number variations, validated by qPCR, in paired tumour and blood samples of seven patients with neuroblastoma. Thirty four genes were included in altered regions while 11 altered regions did not apparently contain known genes. Five changes were present both in tumour and blood DNA samples in four patients, suggesting presence of germline and/or somatic changes maintained throughout tumorigenesis. Furthermore, some similar or identical changes were observed in different patients. The X chromosome showed the largest number of alterations. DNA from peripheral blood and tumour samples was isolated following using Qiagen DNA Blood Mini Kit. Microarray assays were performed in an Affymetrix platform with Cytogenetics Whole-Genome 2.7 M Array® (Affymetrix, Inc., Santa Clara, CA) for detecting copy number variation across coverage of the whole genome with the highest density of markers for superior resolution. Assays were performed following the procedure of Cytogenetics Copy Number Assay User Guide (Affymetrix®) and analysed with the Affymetrix® Chromosome Analysis Suite (ChAS) software. Gains and losses in tumour and blood samples from each patient were estimated with 95% confidence intervals.

2014-01-01 | E-GEOD-43454 | biostudies-arrayexpress

Transcription profiling by array of oral squamous cell cancer (OSCC) surgical margins defined by narrow band imaging.

Project description:The purpose of this study was to provide molecular evidence that surgical margin definition using narrow band imaging (NBI) resulted in more complete OSCC excision that conventional while light (WL) imaging. Samples were taken prospectively from 18 patients undergoing surgical resection for intraoral SCC (excluding lip, pharynx and hypopharynx). Biopsies were taken from the tumour and from 5mm beyond each of the abnormal tissue margins defined by WL and NBI. Transcriptional profiling was performed by microarray.

2018-01-17 | E-MTAB-5933 | biostudies-arrayexpress

MicroRNA profiling by array of oral squamous cell cancer (OSCC) surgical margins defined by narrow band imaging.

2018-02-09 | E-MTAB-6470 | biostudies-arrayexpress

Transcription profiling by array of head and neck squamous cell carcinoma samples with focus on extracellular matrix components in margin of surgical resecate

Project description:Tumor stroma strongly influences behaviour of cancer cells. Here, we study influence of the tumor stroma on transcription activity of head and neck squamous cell carcinoma cells. In particular, we compare transcription activity of the cancer cells in relation to expression of a putative prognostic marker tenascin in the surrogate of the tumor stroma, margin of surgical resecate.

2018-12-31 | E-MTAB-5852 | biostudies-arrayexpress

Glioblastoma cell fate is differentially regulated by the microenvironments of the tumour bulk and infiltrative margin.

Project description:Glioblastoma recurrence originates from invasive cells that escape surgical resection, but their biology remains poorly understood. Here we generated three somatic mouse models recapitulating the main driver mutations of the human disease to characterise the infiltrative tumour margin. We find that, regardless of genetics, tumours are fuelled by highly proliferative glioma stem-like cells (GSCs) resembling active neural stem cells (NSCs), which recapitulate normal and injury-induced neurogenesis in both bulk and margin. Surprisingly, GSCs are evenly distributed across both regions, suggesting that invasive potential is uncoupled from stemness. However, tumour region influences fate choice, with margin cells progressing towards astrocyte-like, and bulk cells towards injured NSC-like (iNSCs) fates. iNSCs account for a significant proportion of dormant glioblastoma cells and are induced by interferon signalling within T-cell-rich niches that form selectively in the bulk. These findings identify key differences between bulk and margin and indicate that glioblastoma cell fate is under cell-extrinsic control.

2021-12-31 | GSE174470 | GEO

A mouse SWATH-MS reference spectral library enables deconvolution of species-specific proteomic alterations in human tumour xenografts

Project description:SWATH-MS enables accurate and reproducible label-free quantification of proteomes including in extensively studied model organisms such as the mouse. Here we present a comprehensive mouse reference spectral library (MouseRefSWATH) that allows quantification of up to 10,597 proteins (62.2% of mouse proteome) by SWATH-MS. We exploit MouseRefSWATH to develop an analytical pipeline for species-specific deconvolution of proteomic alterations in human tumour xenografts (XenoSWATH). This method overcomes the challenge of high protein sequence similarity between the mouse and human, facilitating the study of host microenvironment-tumour interactions from ‘bulk tumour’ measurements. We apply XenoSWATH to characterise a xenograft model of breast ductal carcinoma in-situ and uncover complex regulation of cell migration pathways that is not restricted to the tumour cells but also operates in the mouse stromal upon progression to invasive disease. MouseRefSWATH and XenoSWATH opens new possibilities for in-depth proteomic assessment to address wide-ranging biological questions involving this important model organism.

2020-06-23 | PXD017209 | Pride

RNA-seq analysis of CD8 tumour infiltrating lymphocytes from GFP-Egr2 Knockin and hCD2-Cre Egr2loxP/loxP Egr3-/- mice

Project description:To determine the effect of Egr2 and Egr3 on tumour infiltrating lymphocyte gene expression, GFP-Egr2 knockin (Egr2 Kin) and hCD2-Cre Egr2loxP/loxP Egr3-/- (Egr2/3 DKO) mice were inoculated with MC38 or B16 tumour cells. Fourteen days later, GFP-Egr2high and Egr2-/-Egr3-/- CD8+ tumour infiltrating lymphocytes were isolated from Egr2 Kin and Egr2/3 DKO mice, respectively, and analysed by RNA-seq.

2023-01-31 | E-MTAB-11672 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data