GEO DataSets

(Submitter supplied) A temporal gradient of the novel nuclear protein LIN-14 specifies the timing and sequence of stage-specific developmental events in Caenorhabditis elegans. The profound effects of lin-14 mutations on worm development suggest that LIN-14 directly or indirectly regulates stage-specific gene expression. We show that LIN-14 can associate with chromatin in vivo and has in vitro DNA binding activity. A bacterially expressed C-terminal domain of LIN-14 was used to select DNA sequences that contain a putative consensus binding site from a pool of randomized double-stranded oligonucleotides. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL14 GPL2646

6 Samples

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(Submitter supplied) BACKGROUND: When resources are scant, C. elegans larvae arrest as long-lived dauers under the control of insulin/IGF- and TGFbeta-related signaling pathways. : We have identified genes that show different levels of expression in a comparison of wild-type L2 or L3 larvae (non-dauer) to TGFbeta mutants at similar developmental stages undergoing dauer formation. Many insulin/IGF pathway and other known dauer regulatory genes have changes in expression that suggest strong positive feedback by the TGFbeta pathway. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

4 related Platforms

10 Samples

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(Submitter supplied) This set of arrays contains all microarray experiments done involving comparisons among C. elegans natural isolates and mutation-accumulation lines. Abstract: The evolutionary importance of gene-expression divergence is unclear: some studies suggest that it is an important mechanism for evolution by natural selection, whereas others claim that most between-species regulatory changes are neutral or nearly neutral. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

7 related Platforms

49 Samples

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(Submitter supplied) Using a C. elegans whole genome DNA microarray in this study, the effects of five different xenobiotics on the gene expression of the nematode were investigated. The exposure time for the following five applied compounds beta-NF (5 mg/l), Fla (0.5 mg/l), atrazine (25 mg/l), clofibrate (10 mg/l) and DES (0.5 mg/l) was 48+/-5 h. The analysis of the data showed a clear induction of 203 genes belonging to different families like the cytochromes P450, UDP-glucoronosyltransferases (UDPGT), glutathione S-transferases (GST), carboxylesterases, collagenes, C-type lectins and others. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

5 related Platforms

16 Samples

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(Submitter supplied) These experiments were undertaken with the goal of identifying genes whose expression is enriched in or restricted to the sensory rays of the C. elegans male tail. We constructed two mutant strains in which ray development is either compromised (EM672) or enhanced (EM673), and harvested mRNA from adult males. Labeled cDNAs were compared on seven arrays (representing three different sets of mRNA preps). more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL3309 GPL2646 GPL3308

7 Samples

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(Submitter supplied) The nematode shows responses to acute ethanol exposure that are similar to those observed in humans, mice, and Drosophila, namely hyperactivity followed by uncoordination and sedation. We used in this report the nematode Caenorhabditis elegans as a model system to identify and characterize the genes that are affected by ethanol exposure and to link those genes functionally into an ethanol-induced gene network. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL2653 GPL3097 GPL2646

7 Samples

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(Submitter supplied) The soil nematode Caenorhabditis elegans is one of the simplest animals having the status of a laboratory model. Its genome contains 80 cytochrome P450 genes (CYP). In order to study CYP gene expression in C. elegans mixed stages and synchronized hermaphrodites were exposed to 18 known xenobiotic cytochrome P450 inducers. Messenger RNA expression was detected by DNA arrays and semiquantitative RT-PCR. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL2646 GPL2655 GPL3097

3 Samples

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(Submitter supplied) By culturing and isolating wild-type and mec-3 mutant cells from embryos and applying their amplified RNA to DNA microarrays, here we have identified genes that are known to be expressed in touch receptors, a previously uncloned gene (mec-17) that is needed for maintaining touch receptor differentiation, and more than 50 previously unknown mec-3-dependent genes. Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL2754 GPL2646

6 Samples

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(Submitter supplied) The von Hippel-Lindau (VHL) tumor suppressor functions as a ubiquitin ligase that mediates proteolytic inactivation of hydroxylated a subunits of hypoxia-inducible factor (HIF). Although studies of VHL defective renal carcinoma cells suggest the existence of other VHL tumor suppressor pathways, dysregulation of the HIF transcriptional cascade has extensive effects that make it difficult to distinguish whether, and to what extent, observed abnormalities in these cells represent effects on pathways that are distinct from HIF. more...

Organism:

Caenorhabditis elegans

Type:

Expression profiling by array

Platforms:

GPL2646 GPL2647

4 Samples

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(Submitter supplied) Material is transferred from microtiter plate wells to the slide surface by an automated print head

Organism:

Caenorhabditis elegans

9 Series

30 Samples

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