Expression profile of third instar larval fat body and midgut tissues
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ABSTRACT:
ORGANISM(S): Drosophila melanogaster
PROVIDER: GSE25025 | GEO | 2010/11/02
SECONDARY ACCESSION(S): PRJNA134399
REPOSITORIES: GEO
Similar Datasets
Project description:We use mRNA-seq to transcriptionally profile larval fat body and midgut tissues from Drosophila third instar larvae. These data provide insights into tissue physiology and can be used to identify tissue specific transcripts. Fat bodies from wandering third instar larvae were dissected from ~50 male larvae and gonads were removed to eliminate contaminating transctips from the gonads. Larval midguts were dissected from ~50 wandering third instar larvae. Larval tissues were removed to Graces unsupplemented medium on ice prior to RNA extraction with TRIzol reagent. mRNA-seq samples were prepared from 5ug of total RNA and subject to Illumina based sequencing.
2010-11-02 | E-GEOD-25025 | biostudies-arrayexpress
Project description:Survival of insects on a substrate containing toxic substances such as plant secondary metabolites or insecticides is dependent on the metabolism or excretion of those xenobiotics. The primary sites of xenobiotic metabolism are the midgut, Malpighian tubules and fat body. In general, these organs are treated as single tissues by online databases, but several studies have shown that gene expression within subsections of the midgut is compartmentalized. In this article, RNA sequencing analysis was used to investigate whole-genome expression in subsections of the third-instar larval midgut. The results support functional diversification in subsections of the midgut. Analysis of the expression of gene families that are implicated in the metabolism of xenobiotics suggests that metabolism may not be uniform along the midgut. These data provide a starting point for investigating gene expression and xenobiotic metabolism in the larval midgut.
2014-09-20 | GSE32329 | GEO
Project description:We use mRNA-seq to transcriptionally profile larval salivary gland tissue from Drosophila third instar larvae. These data provide insights into tissue physiology and can be used to identify tissue specific transcripts.
2011-10-18 | GSE33017 | GEO
Project description:Survival of insects on a substrate containing toxic substances such as plant secondary metabolites or insecticides is dependent on the metabolism or excretion of those xenobiotics. The primary sites of xenobiotic metabolism are the midgut, Malpighian tubules and fat body. In general, these organs are treated as single tissues by online databases, but several studies have shown that gene expression within subsections of the midgut is compartmentalized. In this article, RNA sequencing analysis was used to investigate whole-genome expression in subsections of the third-instar larval midgut. The results support functional diversification in subsections of the midgut. Analysis of the expression of gene families that are implicated in the metabolism of xenobiotics suggests that metabolism may not be uniform along the midgut. These data provide a starting point for investigating gene expression and xenobiotic metabolism in the larval midgut. Examination of expression in eight samples corresponding to compartments of gene expression in the midgut
2014-09-20 | E-GEOD-32329 | biostudies-arrayexpress
Project description:We use mRNA-seq to transcriptionally profile larval salivary gland tissue from Drosophila third instar larvae. These data provide insights into tissue physiology and can be used to identify tissue specific transcripts. Salivary glands were dissected from 200 wandering third instar larvae and the associated fat body was removed.Salivary glands were transferred to Graces unsupplemented medium on ice prior to RNA extraction with TRIzol reagent. mRNA-seq samples were prepared from 10 ug of total RNA and subject to Illumina based sequencing.
2011-10-18 | E-GEOD-33017 | biostudies-arrayexpress
Project description:One function of plant lectins is to serve as defenses against herbivorous insects. The midgut is the critical site affected by dietary lectins such as wheat germ agglutinin (WGA). We observed marked cellular structural and gene expression changes in Drosophila melanogaster third-instar larval midguts from insects WGA-fed or starved. Dietary WGA caused shortening, branching, swelling, distortion and in some cases disintegration of the midgut microvilli (Mv). Starvation was accompanied by shortening of the Mv. Microarray analyses revealed that dietary WGA evolved differential expression of 62 transcripts; seven of which were also differentially expressed in starved insects. The differentially regulated gene cluster in WGA-fed larvae were associated with (i) cytoskeletal organization, (ii) immune responses, (iii) detoxification reactions, and (iv) energy metabolism. Four putative transcription factor binding motifs (TFBMs) were associated with the differentially-expressed genes. At least one of these putative TFBMs exhibited substantial similarity to MyoD, a TFBM associated with cellular structures in mammals. These results are in keeping with the hypothesis that WGA causes a starvation-like effect as well as structural changes of midgut cells of Drosophila third-instar larvae. Keywords: stress response
2008-10-03 | GSE11047 | GEO
Project description:One function of plant lectins is to serve as defenses against herbivorous insects. The midgut is the critical site affected by dietary lectins such as wheat germ agglutinin (WGA). We observed marked cellular structural and gene expression changes in Drosophila melanogaster third-instar larval midguts from insects WGA-fed or starved. Dietary WGA caused shortening, branching, swelling, distortion and in some cases disintegration of the midgut microvilli (Mv). Starvation was accompanied by shortening of the Mv. Microarray analyses revealed that dietary WGA evolved differential expression of 62 transcripts; seven of which were also differentially expressed in starved insects. The differentially regulated gene cluster in WGA-fed larvae were associated with (i) cytoskeletal organization, (ii) immune responses, (iii) detoxification reactions, and (iv) energy metabolism. Four putative transcription factor binding motifs (TFBMs) were associated with the differentially-expressed genes. At least one of these putative TFBMs exhibited substantial similarity to MyoD, a TFBM associated with cellular structures in mammals. These results are in keeping with the hypothesis that WGA causes a starvation-like effect as well as structural changes of midgut cells of Drosophila third-instar larvae. Experiment Overall Design: Three treatments (control, WGA, and Starvation), and three replicates for each treatment. So there are total nine samples. no dye-swap.
2008-10-26 | E-GEOD-11047 | biostudies-arrayexpress
Project description:The male larval gonad is a complex tissue made up of multiple cell types including germ cells and somatic cells. It is also a key developmental stage with the germline undergoing spermatogenesis. The diversity of cell types and transcriptional regulation of the developing gonad has only been broadly described. In order to get single cell resolution, we profiled late third instar larval testes of a reference Drosophila melanogaster genotype, w[1118] using single-cell RNA-Seq (scRNA-Seq). We identified and annotated 9 cell types including 4 stages of the germ cell lineage, and provide transcriptional profiles for each cell type.
2019-02-01 | GSE125947 | GEO
Project description:We report the genome-wide RNA profiling of third instar larval wing imaginal discs upon Paip1 mutation
2023-07-31 | GSE146531 | GEO
Project description:Organisms need to co-ordinate growth with development particularly in the context of nutrient availability. Thus, multiple ways have evolved to survive extrinsic nutrient deprivation during development. In the holometabolous insect Drosophila, growth occurs during larval development. Larvae are therefore critically dependent on nutritional inputs for pupariation. Post critical weight however, they pupariate even when starved. How nutrient availability is coupled to the internal metabolic state for the decision to pupariate in not well understood and needs better understanding. Wild type larvae, when subjected to nutrient deprivation as mid-third instar larvae, pupariate and also emerge as adults, even though smaller than normally fed ones (Jayakumar et al., 2016; Megha and Hasan, 2017). A recent study (Jayakumar et al., 2016) identified a neuronal circuit that enables wild-type larvae to survive protein deprivation and pupariate. IP3R function in a subset of glutamatergic neurons is a crucial part of the circuit. However, the cellular role of IP3R in these neurons is not understood. In Drosophila neurons, the IP3R causes and facilitates store-operated calcium entry (Chakraborty et al., 2016; Venkiteswaran and Hasan, 2009). Thus it is likely, that the IP3R also regulates expression of genes that regulate this phenomenon. In this study, we have compared the gene expression profiles of control and itpr knockdown larval brains to identify genes that act downstream of the IP3R to regulate pupariation under nutrition stress.
2019-03-01 | GSE109637 | GEO