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Transcription profiling by array of human colorectal cancer cell lines expressing NVM-1

ABSTRACT: The aim of this experiment was to determine the molecular function of NVM-1 Gene in tumor invasion and metastasis.

ORGANISM(S): Homo sapiens

SUBMITTER: Christian Schwager

PROVIDER: E-TABM-1061 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcription profiling by array of rat ASNEOpancreas tumor cell line transplanted into a rat and the primary tumor and lymph node metastases profiled

Project description:Target of this study is to identify genes which are responsible for lymph node metastasis or primary pancreatic tumors. 1ASNEO is a pancreas tumor cell line, derived from a tumor which does not (hardly) metastasize. 1ASNEO cells are implanted into rat to induce tumor growth in transplanted rat. Cells from the induced primary tumor as well as from lymph node metastases are excised cultivated and profiled. Aliquots of these tumor cell lines are implanted in a subsequent rounds into other animals, reisolated and also profiled

2011-08-18 | E-TABM-1059 | biostudies-arrayexpress

Transcription profiling of mouse liver from animals overexpressing lymphotoxin alpha and beta with concomitant hepatocyte-specific knock-out of the IKK-beta gene vs. wild types

Project description:Experimental Description<br><br>Mice overexpressing lymphotoxin alpha and beta, mice overexpressing lymphotoxin alpha and beta with concomitant hepatocyte-specific knock-out of the IKK-beta gene, and wild type C57BL/6 mice were sacrificed at 3 and 9 months of age, resp. From the respective livers, mRNA was extracted and whole genome transcription profiling was conducted with hybridization on day 1,2 or 3.

2009-07-21 | E-MEXP-1998 | biostudies-arrayexpress

Transcription profiling of wild type, MKK3 transfected and Ras transfected mouse fibroblasts which have invaded or not invaded through a separating membrane

Project description:Invasiveness of genetically modified cells is tested. Four cells lines (NIH3T3 untreated control; NIH-Ras positive control which is invasion +; NIH-MKK3actK4 and NIH-MKK3actATN, two constructs with MKK3 gene which shall be investigated for theit invasiveness). Cells on top as well as cells from bottom of separating membrane (those which had "invaded") form all 4 cell lines are collected and expression profiled. Aim is to find genes which are correlated to "invasion".

2009-09-18 | E-TABM-561 | biostudies-arrayexpress

Transcription profiling of human dermal fibroblasts and lung microvascular endothelial cells irradiated with iron ions

Project description:Normal human dermal fibroblasts (NHDF) and human lung microvascular endothelial cells (HMVEC-L) were irradiated with iron ions (0, 0.2, 0.4 and 1 Gy, 1GEv/n) at Brookhaven National Labs (BNL). Aim of the study is to find differentially transcribed genes in dependance of radiation dose/source and cell type.

2009-04-25 | E-TABM-374 | biostudies-arrayexpress

Transcription profiling of human dermal fibroblasts and lung microvascular endothelial cells irradiated with protons

Project description:Normal human dermal fibroblasts (NHDF) and human lung microvascular endothelial cells (HMVEC-L) were irradiated with protons (0, 0.5, 1 and 2 Gy, 1GEv/n) at Brookhaven National Labs (BNL). Aim of the study is to find differentially transcribed genes in dependence of radiation dose/source and cell type.

2009-04-25 | E-TABM-379 | biostudies-arrayexpress

Transcription profiling of mouse lung fibroblasts and Lewis lung cells to investigate the transciptional regulation that governs cell-cell fusion process

Project description:This study aimed to investigate the transciptional regulation that governs cell-cell fusion process.

2008-06-30 | E-TABM-381 | biostudies-arrayexpress

Transcription profiling of prostate tumor cell line AT1 inocculated into rats and then subjected to carbon ion or photon radiation

Project description:In the present study approximately 1 to 2 mm3 prostate tumor AT1 was inoculated subcutaneously in the right hind leg of adult male Copenhagen rats. When the tumor diameter exceeded 15 mm, tumors of 5 and 4 rats were irradiated with carbon ion radiation of 37 or 16Gy respectively. Tumors of 5 other rats were irradiated with photon radiation of 37Gy. One animal irradiated with 37 Gy carbon ion radiation and one animal irradiated with photon radiation was sacrificed 12h, 30h, 72h, 7d and 14d after irradiation respectively. One animal irradiated with 16 Gy photon radiation was sacrificed 12h, 60h, 7d and 14d after irradiation respectively. Non-irradiated animals were sacrificed at 60h time point. Tumors were dissected and frozen in liquid nitrogen immediately. Total RNA from tumor material was isolated using the NucleoSpin RNA L kit (#740962.20, Macherey-Nagel). Differential gene expression analysis was performed on the Agilent whole rat genome Oligo Microarray (44k) platform by comparative two dye hybridisation with dye-swaps.

2008-07-18 | E-TABM-481 | biostudies-arrayexpress

Transcription profiling of human blood from patients with acute kidney injury following open-heart surgery with cardiopulmonary bypass

Project description:Acute kidney Injury (AKI) following open-heart surgery with cardiopulmonary bypass (CPB) is associated with an increased morbidity and mortality. The goal of this study is to explore patterns of gene expression in human AKI following CPB. This prospective observational study was approved by the Institutional Review Board Human Subjects Committee. Design and methods: Peripheral blood RNA samples were collected prospectively from a cohort of 30 patients at Caritas St. Elizabeths Medical Center in Boston, MA, undergoing CPB at time points immediately prior, and two and 24 hours following CPB. Gene expression patterns of four patients who developed AKI (cases) following CPB will be compared with six patients matched for clinical characteristics, who did not develop AKI (controls). AKI was defined by an incremental increase in serum creatinine of 30% within 72 hours following CPB. For peripheral blood RNA sampling, 2.5 ml of venous whole blood was collected into PAXgene Blood RNA Tube collection tubes (PreAnalytiX GmbH, Hombrechtikon, CH). Whole blood RNA was extracted with the PAXgene Blood RNA extraction Kit according to the manufacturers instructions (PAXgene RNA Kit Handbook, 06/2005). All biological samples are stored at 80° C.

2009-12-12 | E-TABM-595 | biostudies-arrayexpress

Transcription profiling of mouse cerebella from pups exposed to PTU to induce hypothyroidism

Project description:Pregnant dams were treated with 0.1% or 0.04% 6-propyl-2-thiouracil (PTU) in drinking water continuously from day 13 post conception until weaning to produce hypothyroid pups. Cerebella were collected from vehicle and 0.1% PTU treated pups at post-natal day (PND) 15 and mRNA from these was subjected to microarray analysis using Agilent high-density oligonucleotide chips.

2008-05-02 | E-MEXP-1048 | biostudies-arrayexpress

Transcription profiling by array of the complete GlnR nitrogen-response regulon in Mycobacterium smegmatis

Project description:BACKGROUND: Nitrogen is an essential element for bacterial growth and an important component of biological macromolecules. Consequently, responding to nitrogen limitation is critical for bacterial survival and involves the interplay of signalling pathways and transcriptional regulation of nitrogen assimilation and scavenging genes. In the soil dwelling saprophyte Mycobacterium smegmatis the OmpR-type response regulator GlnR is thought to mediate the transcriptomic response to nitrogen limitation. However, to date only ten genes have been shown to be in the GlnR regulon, a vastly reduced number compared to other organisms. RESULTS: We investigated the role of GlnR in the nitrogen limitation response and determined the entire GlnR regulon, by combining expression profiling of M. smegmatis wild type and glnR deletion mutant, with GlnR-specific chromatin immunoprecipitation and high throughput sequencing. We identify 53 GlnR binding sites during nitrogen limitation that control the expression of over 100 genes, demonstrating that GlnR is the regulator controlling the assimilation and utilisation of nitrogen. We also determine a consensus GlnR binding motif and identify key residues within the motif that are required for specific GlnR binding. CONCLUSIONS: We have demonstrated that GlnR is the global nitrogen response regulator in M. smegmatis, directly regulating the expression of more than 100 genes. GlnR controls key nitrogen stress survival processes including primary nitrogen metabolism pathways, the ability to utilise nitrate and urea as alternative nitrogen sources, and the potential to use cellular components to provide a source of ammonium. These studies further our understanding of how mycobacteria survive nutrient limiting conditions. [Data is also available from http://bugs.sgul.ac.uk/E-BUGS-143]

2013-04-24 | E-BUGS-143 | biostudies-arrayexpress

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