E-GEOD-14531
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PRJNA111609
PROVIDER: E-GEOD-14531 | ExpressionAtlas | 2014-08-14
REPOSITORIES: ExpressionAtlas
Similar Datasets
Project description:We show that dHNF4 null mutant larvae are sensitive to starvation. Starved mutant larvae consume glycogen normally, but retain lipids in their midgut and fat body, and have increased levels of long chain fatty acids, suggesting that they are unable to efficiently mobilize stored fat for energy. HNF4 dependent transcripts were identified under fed and starved conditions. Microarray studies indicate reduced expression of genes that control lipid catabolism and beta-oxidation. Late second instar control and HNF4 mutant larvae were collected and fed or starved for 24 hours, and then RNA was isolated for analysis. Taken together, our results support a feed-forward model for dHNF4, in which fatty acids released from triglycerides activate the receptor, inducing enzymes that drive fatty acid oxidation for energy production. Keywords: expression profiling, HNF4, mutants, Affymetrix, Drosophila 2.0, starvation, TAG, fatty acid, beta-oxidation
2009-01-24 | GSE14531 | GEO
Project description:mRNA profiling by array of Drosophila azn127 homozygous mutant larvae
2014-05-14 | E-MTAB-2342 | biostudies-arrayexpress
Project description:the purpose of the study is to compare the gene expression profile of WT vs. XBP1 Mutant Drosophila Larvae Methods: RNA sequencing was performed from 2nd instar Larvae of WT and XBP1 Mutant flies Results: Across the 4 samples, there was an average of 51 million mapped reads per sample with an average unique mapping rate of 83%. Using an adjusted p-value cutoff of 0.05, 154 genes were calculated to be differentially expressed. Conclusions: XBP1 affects gene expression profiling in drosophila larvae
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Project description:Microarray profiling of GFP-marked epithelial cells isolated by FACS from 1st and 3rd instar wild type and mutant Drosophila larvae.
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Project description:ChIP-Seq peak calling of CP190 in wild-type and Ibf2 mutant Drosophila melanogaster third instar larvae Two wild-type and two Ibf2 mutant Drosophila melanogaster third instar larvae were sequenced.
2014-04-18 | E-GEOD-52240 | biostudies-arrayexpress
Project description:This study describes the epigenetic profiling of the H3K9me2 in wt Drosophila larvae, as well as in Drosophila larvae for which the euchromatic catalytic enzyme depositing H3K9me2 (EHMT) is knocked out. ChIP-Seq profiling of H3K9me2 in wt and EHMT KO third instar Drosophila larvae
2011-01-05 | E-GEOD-22447 | biostudies-arrayexpress
Project description:Transcriptional profiling of Drosophila third instar larvae comparing control (w1118) and DHR38 mutants (DHR38Y214/Df(2)KetelRX32) Two-condition experiment, control vs. DHR38 mutant larvae. Biological replicates: 3 replicates.
2010-12-01 | E-GEOD-23047 | biostudies-arrayexpress
Project description:This study describes the epigenetic profiling of the H3K9me2 in wt Drosophila larvae, as well as in Drosophila larvae for which the euchromatic catalytic enzyme depositing H3K9me2 (EHMT) is knocked out.
2011-01-05 | GSE22447 | GEO
Project description:Gene expression profiling of Drosophila melangoaster Myb mutant wing discs of 3rd instar larvae. [NimbleGen tiling array]
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Project description:Intracellular Ca2+ release through the Inositol 1,4,5-Triphosphate Receptor (InsP3R) is a feature of all multicellular organisms in which it shapes the temporal and spatial aspects of calcium signaling in cells, affecting several developmental and physiological processes. Mutants in the InsP3R gene of Drosophila (itpr) exhibit a range of defects which include growth defects and larval lethality.The Drosophila Insulin-like peptides (ILPs) are encoded by multigene families that are expressed in the brain and other tissues. Upon secretion, these peptides likely serve as hormones, neurotransmitters, and growth factors. In Drosophila melanogaster, molecular genetic studies have revealed Drosophila ILPs as elements of a conserved insulin signaling pathway, and as in other animal models, it appears to play a key role in metabolism, growth, reproduction, and aging. Previous work from our group has shown that InsP3R function can be rescued by ectopically expressing InsP3R in dilp cells or can be compensated by altering the activity of Sarco-Endoplasmic Reticulum Calcium-ATPase (SERCA). To understand the molecular basis of larval lethality and growth defect in Drosophila InsP3R mutants and to decipher possible cross talk of itpr gene with other signaling pathways we have carried out genome wide microarray experiments. We have compared the transcript profiles of i) itpr mutant larvae and wild type larvae, ii) dilp rescue larvae with itpr mutant larvae iii) itpr and SERCA double mutant larvae with itpr mutant larvae. By this we have identified genes whose levels are altered in itpr mutants and are restored towards wild type in dilp rescue larvae with itpr mutant larvae and itpr and SERCA double mutants. Our experiments help in identify genes that are regulated by changes in intracellular Ca2+ in the context of larval viability may contribute to the better understanding of the major human pathologies caused by calcium misbalance or by dysregulation of the insulin/IGF pathway. The 8x60k array AMADID: 27326 slide was scanned immediately by PerkinElmer Scan array Gx Microarray scanner. The Scan array software (PerkinElmer) was used for grid wise normalization of array images. Three were used with Mutant, three for Dilp Rescue and two for Kum Rescue experiments . The data was analysed by GeneSpring GX Agilent . The differential expression was considered if the Log 2 mean of at least -1 for the down regulated genes and +1 for the upregulated genes. We considered only the genes that were reproducible from biological triplicates for Mutant, biological treplicates for Dilp Rescue and biological duplicates for Kum Rescue.
2012-06-01 | E-GEOD-29736 | biostudies-arrayexpress