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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of Drosophila melanogaster germ line stem cells from bam mutant or Dpp overexpressing ovaries vs Kc cell controls

ABSTRACT: This series compares gene expression between germ line stem cells (GSCs) purified either from bam mutant or Dpp-overexpressing ovaries, with gene expression in Kc cells Experiment Overall Design: 3 replicates of GSCs from bam mutant ovaries Experiment Overall Design: 3 replicates of GSCs from Dpp overexpressing ovaries Experiment Overall Design: 3 replicates of Kc tissue culture cells

ORGANISM(S): Drosophila melanogaster

SUBMITTER: Allan Spradling

PROVIDER: E-GEOD-2783 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The expression profile of purified Drosophila germline stem cells.

Kai Toshie T Williams Dianne D Spradling Allan C AC

Developmental biology 20050701 2

We developed a method to highly purify germline stem cells (GSCs) from the Drosophila ovary, one of the best understood types of adult stem cell. GSCs express variant isoforms of general transcriptional components, translation initiation factors, and several variant ribosomal proteins, including RpL22, a protein enriched in several mammalian stem cells. These novel isoforms may help regulate stem cell gene expression because a reversion assay indicated that at least four were specific for GSCs. ...[more]

PMID: 15927177

Similar Datasets

GSC vs Kc

Project description:This series compares gene expression between germ line stem cells (GSCs) purified either from bam mutant or Dpp-overexpressing ovaries, with gene expression in Kc cells Keywords: bam mutant, Dpp overexpression

2005-06-15 | GSE2783 | GEO

Transcription profiling of Drosophila melanogaster BAM over expressing germline stem cells vs controls

Project description:Gene expression is tested for an association with GSCs by comparing expression levels in ovary tips of c587-GAL4; hs-bam UAS-dpp females at 0 hr, 20 hr and 50 hr after heat shock ; results of two independent experiments are given as expt 1 and expt 2 Experiment Overall Design: 0 hr ovary tips contain many GSCs Experiment Overall Design: 20 hr hs-bam has induced differentiation of all GSCs Experiment Overall Design: 50 hr Bam has turned over and cystocytes have reverted to become GSCs again Experiment Overall Design: see Kai et al. (2005) Dev. Biol, in press.

2007-11-02 | E-GEOD-2784 | biostudies-arrayexpress

GSC differentiation-reversion test

Project description:gene expression is tested for an association with GSCs by comparing expression levels in ovary tips of c587-GAL4; hs-bam UAS-dpp females at 0 hr, 20 hr and 50 hr after heat shock ; results of two independent experiments are given as expt 1 and expt 2 Keywords: time course, heat shock, bam overexpression

2005-06-15 | GSE2784 | GEO

Identification of Dpp target genes during the early embryo development

Project description:The dorsal patterning in Drosophila is controlled by an extracellular gradient of the morphogens Decapentlaplegic/Screw (Dpp/Scrw), which are members of BMP/TGF-β family. Dpp/Scrw signal is transduced to the nucleus by the transcription factors, Mad/Medea. The transcriptional effectors exert their regulation in a graded-manner eliciting at least three threshold responses: high, intermediate and low. However, the mechanism underlying differential response to Dpp is poorly understood, due in part to the insufficient number of well-studied target genes. Gene expression changes were analysed in ectopic overexpressing Dpp mutant embryos to identify new target genes of Dpp/Mad pathway.

2016-02-24 | GSE78226 | GEO

Transcription profiling of Drosophila ovaries from bam mutant and stwl bam double mutant females

Project description:Abstract: During Drosophila oogenesis, germline stem cell (GSC) identity is maintained largely by preventing the expression of factors that promote differentiation. This is accomplished via the activity of several genes acting either in the GSC or its niche. The translational repressors, Nanos and Pumilio, act in GSCs to prevent differentiation, likely by inhibiting translation of early differentiation factors, while niche signals prevent differentiation by silencing transcription of the differentiation factor Bam. We have found that the DNA-associated protein Stonewall (Stwl) is also required for GSC maintenance. stwl is required cell-autonomously; clones of stwl- germ cells were lost by differentiation, and ectopic Stwl caused an expansion of GSCs. stwl mutants acted as Suppressors of Variegation, indicating stwl normally acts in chromatin-dependent gene repression. In contrast to several previously described GSC maintenance factors, Stwl likely functions epigenetically to prevent GSC differentiation. Stwl-dependent transcriptional repression does not target bam, but rather Stwl represses the expression of many genes, including those that may be targeted by Nanos/Pumilio translational inhibition. Experiment Overall Design: Genetic variation comparison between germ cells of Drosophila ovaries from bam mutant and stwl bam double mutant females. Six total samples were analyzed, with each genotype performed in triplicates.

2008-03-13 | E-GEOD-6928 | biostudies-arrayexpress

Transcription profiling of mouse gonocytes isolated from 2 dpp mouse testes by THY1+ MACS sorting and treated with retinoic acid

Project description:to investigate the RA regulated genes in 2 dpp thy1+ gonocytes Experiment Overall Design: gonocytes were isolated from 2 dpp mouse testes by THY1+ MACS sorting and cultured without serum, growth factors and feeder cells for 8hr, with either vehicle ethanol or RA (100 nM). Two control and two RA treated samples were included.

2008-06-16 | E-GEOD-9521 | biostudies-arrayexpress

Diabetes Prevention Program (DPP)

Project description:Diabetes Prevention Program (DPP)

| PRJNA227394 | ENA

Muscle-derived Dpp regulates feeding initiation via endocrine modulation of brain dopamine biosynthesis

Project description:In animals, the brain regulates feeding behavior in response to local energy demands of peripheral tissues, which secrete orexigenic and anorexigenic hormones. Although skeletal muscle is a key peripheral tissue, it remains unknown whether muscle-secreted hormones regulate feeding. In Drosophila , we find that decapentaplegic (dpp), the homolog of human bone morphogenetic proteins BMP2 and BMP4, is a muscle-secreted factor (a myokine) that is induced by nutrient sensing and that circulates and signals to the brain. Muscle-restricted dpp RNAi promotes foraging and feeding initiation whereas dpp overexpression reduces it. This regulation of feeding by muscle-derived Dpp stems from modulation of brain tyrosine hydroxylase (TH) expression and dopamine biosynthesis. Consistently, Dpp receptor signaling in dopaminergic neurons regulates TH expression and feeding initiation via the downstream transcriptional repressor Schnurri. Moreover, pharmacologic modulation of TH activity rescues the changes in feeding initiation due to modulation of dpp expression in muscle. These findings indicate that muscle-to-brain endocrine signaling mediated by the myokine Dpp regulates feeding behavior.

2019-11-15 | GSE140391 | GEO

CTCF and Smad signaling proteins and response to DPP

Project description:ChIP-seq profiles for CTCF and TGF-beta signaling factors before and after treatment with DPP

2015-05-08 | GSE68654 | GEO

Identification of genes whose expression is affected by ptc + dpp double RNAi in spider embryos

Project description:In the spider Parasteatoda tepidariorum, Hedgehog (Hh) and Decapentaplegic (Dpp) signaling play key roles in the formation of the two major embryonic axes (Akiyama-Oda and Oda, 2010, Development 137, 1263-1273; Akiyama-Oda and Oda, 2006, Development 133, 2347-2357). Patched (Ptc), a receptor for Hh,functions as a negative regulator of Hh signaling. Double parental RNA interference (pRNAi) against spider homologs of ptc and dpp, Pt-ptc and Pt-dpp, respectively, results in severe defects in axis formation. In this microarray experiment, we attempted to identify candidate genes whose expressions are regulated by Hh and Dpp signaling during axis formation.

2019-03-15 | GSE112435 | GEO

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