E-GEOD-39012
Ontology highlight
ABSTRACT:
PROVIDER: E-GEOD-39012 | ExpressionAtlas | 2015-09-29
REPOSITORIES: ExpressionAtlas
Similar Datasets
Project description:Expression data from L3 stage Caernorhabditis elegans after arsenic exposure
| PRJNA169608 | ENA
Project description:We used microarrays to explore the global affect on gene expression in C. elegans after exposure to arsenic L3 stage N2 worms were incubated for 6 hrs in sodium arsenite containing media of concentrations .003 and .03. Three independent extractions of RNA were performed from no exposure, .003 exposure, and .03 exposure worms.
2012-06-28 | E-GEOD-39012 | biostudies-arrayexpress
Project description:Cadmium is a naturally occurring heavy metal, and it is widely used in industry. Due to its persistent toxic effect, cadmium is classified as a category one human carcinogen. Its toxicity has been extensively studied in different organisms, including the nematode Caenorhabditis elegans. To investigate the transcriptomic responses following cadmium during early life exposure, C. elegans larval were exposed either from L1 to L3 stage or L1 to L4 stage to 20 µM cadmium chloride. RNAseq was applied to identified the changes of the transcriptome and the pathways which are specific to each stage. Overall, the result revealed that the highest responsive genes in both exposure scenario were linked to oxidative stress, lipid metabolism and ion binding. Additionally, some of these genes are well characterized and linked to specific functions, but some have no known function, however these uncharacterized genes are differentially expressed in both stages as a result of cadmium toxicity.Numerous transcripts were identified in one stage but not at the other. Furthermore, a general trend was observed where a larger number of genes were differentially expressed at L3 stage compared to L4, which suggest stage specific sensitivity in response to cadmium exposure.
2024-04-22 | GSE156507 | GEO
Project description:The goal of this study is to identify and characterize sites in the C. elegans genome bound by the transcription factor TRA-1. TRA-1 ChIP-seq was performed in the following stages of animals in duplicate: 1) L2 stage of C. elegans wild-type N2 strain; 2) L3 stage of C. elegans wild-type N2 strain; 3) young adult stage of C. elegans glp-4(bn2) mutant; 4) young adult stage of C. elegans spe-11(hc77) mutant; 5) L3 stage of C. briggsae wild-type AF16 strain. As a negative control, TRA-1 ChIP-seq was also performed in C. elegans L3 stage with tra-1(e1834) homozygous and heterozygous mutation. Input DNA was also sequenced in each condition.
2013-11-04 | E-GEOD-48917 | biostudies-arrayexpress
Project description:(Part 1) Gene expression profiles of C. elegans in response to P. aeruginosa. Synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours. These synchronized young adult (YA) animals were subsequently exposed to P. aeruginosa PA14 for 4 hours. 25dC. (Part 2) Gene expression profiles of C. elegans in response to Neomycin/Streptomycin-mediated recovery after a 4 hour exposure to P. aeruginosa. Synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours. These synchronized young adult (YA) animals were subsequently exposed to P. aeruginosa PA14 for 4 hours and then treated with Neomycin and shifted to E. coli OP50 plus Streptomycin plates for 6, 12, or 24 hours to resolve the infection. As a control for Neomycin/Streptomycin exposure, synchronized larval stage 1 (L1) worms were raised on E. coli OP50 for 72 hours and either shifted to fresh E. coli OP50 plates for 6 hours or treated with Neomycin and shifted to E. coli OP50 plus Streptomycin plates for 6 hours. 25dC.
2016-08-11 | GSE81592 | GEO
Project description:Expression data from DD neurons isolated from early L1 stage C. elegans larvae.
| PRJNA291625 | ENA
Project description:Ecosystems are chronically exposed to ionizing radiations. But environmental risk assessment of chronic exposure suffers from a lack of knowledge. Extrapolation of data from acute to chronic exposure is not always relevant, and can lead to uncertainties. In fact, effects could be different between the two irradiation modes, especially regarding reproduction endpoint, which is an ecologically relevant parameter . The free living nematode Caenorhabditis elegans is a particularly appropriate model organism to address this proteomic issues. With its fully sequenced genome and its short life cycle, C. elegans has been successfully used to study acute and chronic irradiation effects and their consequences on germline development and hatching. Results showed that a decrease of the number of progeny associated with a decrease of hatching success occurred from and above 30 Gy of acute irradiation.. In the present study, we decided to refine the understanding of molecular mechanisms of acute and chronic irradiation by a global proteome analysis. To do so, C. elegans were exposed to 3 common cumulated doses between acute and chronic exposure. These 3 doses, lower than the doses for which an effect on the reproduction was shown, were susceptible to allow us to find early and sensitive biomarkers of a reproduction decline. After exposure, global modification of the proteome expression was studied using a label free LC-MS/MS proteomic approach. Our objectives were to test the following hypotheses: (1) whether or not proteome expression varied with the dose, and with the irradiation mode; (2) if proteome expression modification was associated with effects on reproduction, with potential direct implications for ecological risk assessment.
2020-10-15 | PXD011731 | Pride
Project description:LGG exposure of C. elegans protects C. elegans against pathogen infection and prolongs lifespan. In particular, it prolongs lifespan by up-regulating specific genes to pathogenic microorganisms. We used microarrays to elucidate miRNA expression to determine how LGG exposure in C. elegans affected miRNAs and identified miRNAs that were significantly regulated in this process.
2021-12-12 | GSE190701 | GEO
Project description:Expression data from Caenorhabditis elegans L1-stage larvae exposed to ethidium bromide and/or serial ultraviolet C radiation
2015-09-29 | E-GEOD-38997 | ExpressionAtlas
Project description:Yilmaz2016 - Genome scale metabolic model -
Caenorhabditis elegans (iCEL1273)
This model is described in the article:
A Caenorhabditis elegans
Genome-Scale Metabolic Network Model.
Yilmaz LS, Walhout AJ.
Cell Syst 2016 May; 2(5): 297-311
Abstract:
Caenorhabditis elegans is a powerful model to study
metabolism and how it relates to nutrition, gene expression,
and life history traits. However, while numerous experimental
techniques that enable perturbation of its diet and gene
function are available, a high-quality metabolic network model
has been lacking. Here, we reconstruct an initial version of
the C. elegans metabolic network. This network model
contains 1,273 genes, 623 enzymes, and 1,985 metabolic
reactions and is referred to as iCEL1273. Using flux balance
analysis, we show that iCEL1273 is capable of representing the
conversion of bacterial biomass into C. elegans biomass
during growth and enables the predictions of gene essentiality
and other phenotypes. In addition, we demonstrate that gene
expression data can be integrated with the model by comparing
metabolic rewiring in dauer animals versus growing larvae.
iCEL1273 is available at a dedicated website
(wormflux.umassmed.edu) and will enable the unraveling of the
mechanisms by which different macro- and micronutrients
contribute to the animal's physiology.
This model is hosted on
BioModels Database
and identified by:
MODEL1604210000.
To cite BioModels Database, please use:
BioModels Database:
An enhanced, curated and annotated resource for published
quantitative kinetic models.
To the extent possible under law, all copyright and related or
neighbouring rights to this encoded model have been dedicated to
the public domain worldwide. Please refer to
CC0
Public Domain Dedication for more information.
2016-11-03 | MODEL1604210000 | BioModels