Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Comparative genomic hybridization of human lymph node tumor samples to calculate absolute DNA copy numbers

ABSTRACT: Array CGH data were used to achieve absolute DNA copy numbers

ORGANISM(S): Homo sapiens

DISEASE(S): non Hodgkin's lymphoma

SUBMITTER: Heidi Lyng

PROVIDER: E-TABM-399 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Publications

GeneCount: genome-wide calculation of absolute tumor DNA copy numbers from array comparative genomic hybridization data.

Lyng Heidi H Lando Malin M Brøvig Runar S RS Svendsrud Debbie H DH Johansen Morten M Galteland Eivind E Brustugun Odd T OT Meza-Zepeda Leonardo A LA Myklebost Ola O Kristensen Gunnar B GB Hovig Eivind E Stokke Trond T

Genome biology 20080523 5

Absolute tumor DNA copy numbers can currently be achieved only on a single gene basis by using fluorescence in situ hybridization (FISH). We present GeneCount, a method for genome-wide calculation of absolute copy numbers from clinical array comparative genomic hybridization data. The tumor cell fraction is reliably estimated in the model. Data consistent with FISH results are achieved. We demonstrate significant improvements over existing methods for exploring gene dosages and intratumor copy n ...[more]

PMID: 18500990

Similar Datasets

Comparative genomic hybridization of human cervical cancer tumor samples to calculate absolute DNA copy numbers

Project description:Array CGH data were used to achieve absolute DNA copy numbers

2008-12-20 | E-TABM-398 | biostudies-arrayexpress

Expression data from human lymphoma endothelium and reactive lymph node-derived endothelium

Project description:Angiogenesis plays a key role in tumor metastasis. Many genes may act in this process including formation of vessels, immune evasion,etc. Different gene expression profiles between lymphoma endothelium cells and reactive lymph node-derived endothelium cells may uncover these genes. And intensive mechanism researches on such key genes may explain the mechanisim of tumor-specific angiogenesis and help to explore effective treatment strategies to prevent/reverse tumor metastasis. We use microarrays to detail gene expression profiles of human lymphoma endothelium and reactive lymph node-derived endothelium. Lymph nodes were taken from surgery samples of cases pathologically diagnosed DLBCL (diffuse large B-cell lymphoma), PTL (peripheral T cell lymphoma) and reactive lymph nodes. The pure endothelium cells were isolated by LCM after immunohistochemical staining of CD34. We found Tim-3 was preferentially expressed on lymphoma-derived ECs via different expression profiles between lymphoma ECs and reactive lymph node-derived ECs. Intensive researches were carried out on Tim-3-expressing -ECs and we found that Tim-3 -expressing-Ecs may play important role on EC-mediated tumor evasion.

2010-01-14 | E-GEOD-19882 | biostudies-arrayexpress

Lymph node transcriptional profiling

Project description:Endobronchial ultrasound (EBUS) guided biopsy is becoming the mainstay for investigation of mediastinal lymphadenopathy to aid laboratory diagnosis of malignancy, sarcoidosis or tuberculosis. However, diagnostic uncertainty is still common in the distinction between culture negative tuberculosis and sarcoidosis or malignancy and reactive lymphadenitis. We sought to evaluate the role of genome-wide transcriptional profiling of EBUS guided lymph node samples to aid diagnostic processes in this setting.

2016-01-06 | E-MTAB-2547 | biostudies-arrayexpress

Measuring Absolute RNA Copy Numbers at High Temporal Resolution Reveals Transcriptome Kinetics in Development

Project description:Transcript regulation is essential for cell function, and misregulation can lead to disease. Despite technologies to survey the transcriptome, we lack a comprehensive understanding of transcript kinetics, which limits quantitative biology. This is an acute challenge in embryonic development where rapid changes in gene expression dictate cell fate decisions. By ultra-high frequency sampling of Xenopus embryos and absolute normalization of sequence reads, we present smooth gene expression trajectories in absolute transcript numbers. During a developmental period approximating the first 8 weeks of human gestation, transcript kinetics vary by 8 orders of magnitude. Ordering genes by expression dynamics, we find temporal synexpression predicts common gene function. Remarkably, a single parameter, the characteristic timescale, can classify transcript kinetics globally and distinguish genes regulating development from those involved in cellular metabolism. Overall, our analysis provides unprecedented insight into the reorganization of maternal and embryonic transcripts and redefines our ability to perform quantitative biology. Gene expression proﬁles may be visualized at http://genomics.crick.ac.uk/apps/profiles/

2016-01-07 | GSE65785 | GEO

Counting and correcting errors within unique molecular identifiers to generate absolute numbers of sequencing molecules [scRNA-Seq]

Project description:Unique Molecular Identifiers (UMIs) are random oligonucleotide barcodes sequences? that are critical for the removal of PCR amplification biases within both bulk and single-cell sequencing experiments. However, the impact that PCR and sequencing errors have on the accuracy of generating absolute counts of RNA molecules is underappreciated. We demonstrate that PCR errors and not sequencing errors are the main source of inaccuracy in sequencing data and that the use of UMIs synthesized with homotrimeric nucleoside building blocks provides a solution to pinpoint and remove errors, allowing absolute counting of sequenced molecules.

2023-06-01 | GSE218901 | GEO

Counting and correcting errors within unique molecular identifiers to generate absolute numbers of sequencing molecules [RNA-seq]

2023-06-01 | GSE218899 | GEO

Genome-wide gene expression comparison (primary central nervous system lymphoma (PCNSL) vs normal lymph node)

Project description:A genome-wide gene expression comparison between primary central nervous system lymphoma (PCNSL) and normal lymph node was performed to identify a differential exprssion and specific pathway. Experiment design: 7 PCNSL and 7 normal lymph node tissues were used for comparison.

2010-11-13 | E-GEOD-25297 | biostudies-arrayexpress

Absolute quantification of miRNAs

Project description:Absolute quantification of miRNAs

| PRJNA116765 | ENA

Microarray analyses of lymph node dendritic cells (DCs) stimulated in vitro with papain or LPS

Project description:T helper type 2 (Th2) responses are induced by protease allergens and helminthes. However the molecular mechanisms that initiate Th2 responses are poorly understood. To obtain insight into this mechanism, we performed a microarray analysis of lymph node DCs stimulated in vitro with the protease allergen papain, or with LPS, a Th1 inducing stimulus. Key words: Th2 response, LPS, dendritic cells, Papain CD11c+ DCs were isolated from the lymph nodes of C57BL/6 mice, and cultured in vitro (1x106 DCs per ml) with 500 3T3-CD40L fibroblasts, either alone, or in the presence of papain (25 µg/ml) or LPS (1 µg/ml). 4h and 17h later, the cells were harvested and RNA isolated and processed for microarray analyses. RNA was extracted and processed from freshly isolated LN DCs. For a given time point, the expression profile of DCs treated with papain or LPS, were compared to that of untreated DCs

2010-05-05 | E-GEOD-21602 | biostudies-arrayexpress

Expression data for lymph node lymphatic endothelial cells and blood endothelial cells

Project description:Lymphatic endothelial cells (LEC) residing in lymph nodes (LN) have been shown to express genes normally restricted to one or a few tissues, termed peripheral tissue antigens (PTA). The expression of one of these PTA, tyrosinase, by LN-resident LEC has been shown to mediate peripheral T cell tolerance. We used a microarray approach to determine the gene expression profile of LN-resident LEC and blood endothelial cells as a comparison with the objective of determining the global PTA repertoire in these LN stromal populations. Skin draining and mesenteric lymph nodes were pooled from 6 week old adult C57BL/6 mice, minced, and enzymatically digested yielding single cell suspensions. Lymph node stromal cells were purified via CD45 magnetic bead negative selection and pure populations of lymphatic endothelial cells (LEC) and blood endothelial cells (BEC) were obtained via electronic cell sorting according to their expression of gp38 and CD31 (LEC: gp38+ CD31+, BEC: gp38- CD31+). Total RNA was extracted, amplified, and hybridized to Affymetrix microarrays. 3 paired independent samples of purified lymph node LEC and BEC were analyzed.

2013-12-28 | E-GEOD-53686 | 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