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Expression data from L3 Drosophila antennal-eyediscs

ABSTRACT: Growth of the drosophila eye imaginal discs is controlled by the activation of Notch in the dorsal-ventral boundary. Overexpression in the eye disc of the Notch ligand Delta together with lola and pipsqueak from the GS(2)88A8 line induces tumoral growth. We used microarray to analyze the expression profile of tumoral discs. Antennal-eye discs of Drosophila L3 larvae were selected for RNA extraction and hybridization on Affymetrix microarrayas. Two genetic conditions were analyzed: tumoral eye discs (ey-Gal4 GS(2)88A8 UAS-Dl) and control eye discs (GS(2)88A8 UAS-Dl). Three different biological replicates of each condition, each one consisting on 300 hundred pairs of eye discs, were analyzed.

ORGANISM(S): Drosophila melanogaster

SUBMITTER: andres garelli

PROVIDER: E-GEOD-35471 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Imaginal discs secrete insulin-like peptide 8 to mediate plasticity of growth and maturation.

Garelli Andres A Gontijo Alisson M AM Miguela Veronica V Caparros Esther E Dominguez Maria M

Science (New York, N.Y.) 20120501 6081

Developing animals frequently adjust their growth programs and/or their maturation or metamorphosis to compensate for growth disturbances (such as injury or tumor) and ensure normal adult size. Such plasticity entails tissue and organ communication to preserve their proportions and symmetry. Here, we show that imaginal discs autonomously activate DILP8, a Drosophila insulin-like peptide, to communicate abnormal growth and postpone maturation. DILP8 delays metamorphosis by inhibiting ecdysone bio ...[more]

PMID: 22556250

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E-GEOD-35471

Project description:Gene expression profile of Drosophila tumoral eye discs (ey-Gal4 GS(2)88A8 UAS-Dl)

2015-09-22 | E-GEOD-35471 | ExpressionAtlas

Expression data from L3 Drosophila antennal-eyediscs

Project description:Growth of the drosophila eye imaginal discs is controlled by the activation of Notch in the dorsal-ventral boundary. Overexpression in the eye disc of the Notch ligand Delta together with lola and pipsqueak from the GS(2)88A8 line induces tumoral growth. We used microarray to analyze the expression profile of tumoral discs.

2012-02-20 | GSE35471 | GEO

Transcription profiling of Drosophila eye antennal imaginal disc expressing either activated Ras or secreted Spitz

Project description:We have used microarrays to identify genes expressed and required for the second mitotic wave (SMW) during eye development. Eye discs expressing Spitz under the control of GMR Gal4 have no SMW as Spitz promotes G1 arrest, ectopic differentiation also occures. To control for the ectopic differentiation, Spi expressing eye antennal discs were compared to eye antennal discs expressing activated RasV12. In discs expresseding RasV12 under the control of GMRGal4 the SMW takes place normally prior to any ectopic differentiation. We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated genes during this process. Experiment Overall Design: Drosophila eye antennal imaginal discs expressing either UAS RasV12 or UAS Spi under the control of GMRGal4 were dissected from 3rd instar larvae for RNA extraction and hybridization on Affymetrix microarrays.

2008-06-14 | E-GEOD-6300 | biostudies-arrayexpress

Eye-antenna early L3 disc expression profiling in COX7a-LoF and Notch-GoF

Project description:Gene expression in larval, early third instar eye-antenna discs was assesed in genotypes with Notch Gain-of-Function (UAS-Delta or UAS-Notch[intra2]) over-expression or mitochondrial COX7a Loss-of-function (UAS-COX7a-RNAi) or a combination of both (UAS-Delta, UAS-COX7a-RNAi). The analysis revealed that, despite a strong genetic interaction between Notch pathway activation and knockdown of COX7a, no transcriptional cooperation or synergy was detectable in early L3 eye-antenna discs. Rather, COX7a knockdown induced a unique transcriptional signature, which further experiments revealed to be mediated by the transcription factor ATF4.

2020-04-10 | GSE148407 | GEO

Expression profiling in the Drosophila eye reveals unexpected repression of Notch signaling by the JAK/STAT pathway

Project description:Although the JAK/STAT pathway regulates numerous processes in vertebrates and invertebrates through modulating transcription, its functionally-relevant transcriptional targets remain largely unknown. With one jak and one stat (stat92E), Drosophila provides a powerful system for finding new JAK/STAT target genes. Genome-wide expression profiling on eye discs in which Stat92E is hyperactivated, revealed 584 differentially-regulated genes, including known targets domeless, socs36E and wingless. Other differentially-regulated genes (chinmo, lama, Mo25, Imp-L2, Serrate, Delta) were validated and may represent new Stat92E targets. Genetic experiments revealed that Stat92E cell-autonomously represses Serrate, which encodes a Notch ligand. Loss of Stat92E led to de-repression of Serrate in the dorsal eye, resulting in ectopic Notch signaling and aberrant eye growth there. Thus, our micro-array documents a new Stat92E target gene and a previously-unidentified inhibitory action of Stat92E on Notch signaling. These data suggest that this study will be a useful resource for the identification of additional Stat92E targets. Identification of the JAK/STAT pathway target genes in the Drosophila eye disc Keywords: Genotype comparison Gene expression profiles from five biological replicates of eye discs with yw (control) and GMR-upd (overexpressing JAK/STAT ligand unpaired) were compared using genome wide mRNA expression profiling by Affymetrix genechip arrays (Drosophila 2.0) and key targets were validated by clonal analysis, in situ hybridization, immunohistochemical staining and quantitative real-time PCR.

2009-08-01 | E-GEOD-15868 | biostudies-arrayexpress

Expression data from Control and Yorkie overexpression pupal eye discs

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2011-12-20 | E-GEOD-26700 | biostudies-arrayexpress

Gene expression changes in Nicd induced wing disc hyperplasia

Project description:The outcome of Notch proliferation on proliferation depends on the context. In Drosophila wing imaginal discs Notch activation causes hyperplasia despite having localized inhibitory effects on proliferation. To understand te underlying mechanisms we have used genomic strategies to identify the Notch-Su(H) target genes during wing discs hyperplasis. these data are the results from expression profiling the RNAs from hyperplastic wing discs overexpressing Nicd. Direct comparison of third instar lavae wing imaginal disc Nicd (abxUbxFLPase; Act>y>Gal4, UAS GFP; FRT82B tubGal80 with UAS-Nicd; FRT82B) vs control (abxUbxFLPase; Act>y>Gal4, UAS GFP; FRT82B tubGal80 with FRT82B ). 4 Biological replicates, the 2nd replicate was performed as a dye-swap.

2013-12-31 | E-GEOD-41428 | biostudies-arrayexpress

Su(H) bound regions in Nicd induced wing-disc hyperplasia

Project description:The outcome of Notch activation on proliferation depends on cellular context. In Drosophila wing discs Notch activation causes hyperplasia despite having localized inhibitory effects on proliferation. To understand the underlying mechanisms we have used genomic strategies to identify the Notch-Su(H) target genes directly activated during wing disc hyperplasia. These data are the results from ChIP-Chip experiments to identify genomic regions occupied by Su(H) in hyperplastic Nicd-expressing Drosophila wing discs. 2 independent replicates; Immunoprecipitation perfomed with Su(H) antibody on chromatin isolated from wing discs overexpressing Nicd (abxUbxFLPase; Act>y>Gal4, UAS GFP; FRT82B tubGal80 with UAS-Nicd; FRT82B) and compared to the total input DNA.

2013-12-31 | E-GEOD-41426 | biostudies-arrayexpress

Myc-dependent transcriptome of Drosophila L3 larval wing imaginal discs, and its dependency on Max and/or the PAF1 complex component Atu/Leo1

Project description:A 2-hour heat-shock at 37C was used to activate hs-FLP and an actin5C-FRT-stop-FRT-GAL4 transgene in larvae carrying any possible combination of the genetic elements UAS-Myc, UAS-Atu-IR, Max-/-. 48 hours later 16-27 wing imaginal discs were isolated from wandering L3 larvae and polyA-RNA was processed for sequencing.

2017-10-02 | E-MTAB-5470 | biostudies-arrayexpress

Gene expression changes in Su(H) induced wing disc hyperplasia

Project description:The outcome of Notch activation of proliferation depends on cellular context. In Drosophila wing discs Notch pathway overactivation results in hyperplasia. To understand the mechanisms we have used genomic strategies to indetify the Notch-S(H) target genes directly regulated in wing disc hyperplasia. These data are the results from expression profiling the RNAs from hyperplastic wing discs overexpressing Su(H). Direct comparison of Giant third instar lavae wing imaginal disc (UAS-GFP:Su(H) expressed by the patched[559.1]-Gal4 driver) vs control (UAS-NLS-GFP expressed by the patched[559.1]-Gal4 driver). 3 Biological replicates, the 3rd replicate was performed as a dye-swap.

2013-12-31 | E-GEOD-41427 | biostudies-arrayexpress

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