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ABSTRACT: Imaginal discs produce neuropeptide-like precursor 1 to alleviate ER stress in response to warm temperatures.

PROVIDER: PRJNA1262550 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR33554934.fastq.gz	Fastqsanger.gz
	SRR33554935.fastq.gz	Fastqsanger.gz
	SRR33554936.fastq.gz	Fastqsanger.gz
	SRR33554937.fastq.gz	Fastqsanger.gz
	SRR33554938.fastq.gz	Fastqsanger.gz

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Imaginal discs produce neuropeptide-like precursor 1 to alleviate ER stress in response to warm temperatures

Project description:In mammals, prolonged heat stress induces an endoplasmic reticulum (ER) stress response that can damage internal organs. In Drosophila, larvae grow and develop into adults faster at warmer temperatures (e.g., 30°C) than at lower temperatures, but with reduced body size and fertility. In this study, we show that the neuropeptide gene neuropeptide-like precursor 1 (Nplp1) alleviates temperature-induced ER stress in imaginal discs. Warm temperatures increase production of a specific Nplp1 splice variant that inhibits PKR-like endoplasmic reticulum kinase (PERK) activation and cell death. Nplp1 inhibits Dilp8 expression through the PERK/ATF4/Yki pathway, thereby enabling imaginal disc growth and ecdysone homeostasis under warm temperature conditions. These findings provide valuable insights into how animals cope with elevated temperatures.

2025-10-29 | GSE297273 | GEO

Transcriptome analysis of N2 and flp-6 Caenorhabditis elegans at 25 °C

Project description:Temperature is a prominent environmental stimulus that influences life span. Previous studies indicate that in Caenorhabditis elegans, thermosensory perception in the AFD neuron maintains life span at warm temperatures. How thermosensation is translated into neuronal signals that shape aging remains elusive. We found that the Caenorhabditis elegans CREB crh-1, as well as several key genes in AFD thermosensory transduction, were specifically required for normal life span at warm temperatures. crh-1 acted in the AFD to increase transcription of the CRE-containing neuropeptide gene flp-6 in a temperature-dependent manner. Both crh-1 and flp-6 were necessary and sufficient for longevity at warm temperatures, and their effects depended on the AIY interneuron. Moreover, flp-6 signaling downregulated ins-7/insulin and several insulin pathway genes, whose activity compromised life span. We postulate that temperature experience is integrated in the thermosensory neurons to generate CREB-dependent neuropeptide signals that antagonize insulin signaling and promote temperature-specific longevity.

2018-05-01 | GSE68464 | GEO

Analysis of H3K9ac in fly imaginal discs [ChIP-seq]

Project description:We have analyzed ChIP-Seq of H3K9ac and H3K27me3 in wing imaginal discs and eye imaginal discs from Drosophila melanogaster.

2015-07-23 | GSE56550 | GEO

Transcriptional activation without chromatin marking in developmentally regulated genes [ChIP-seq]

Project description:We have conducted ChIP-Seq of H3K4me1/H3K27ac in order to perform a comparative study between wing imaginal discs and eye imaginal discs from Drosophila melanogaster.

2015-07-23 | GSE48621 | GEO

Hippo signaling instructs ectopic but not normal organ growth [Drosophila NonPupatingLarvae]

Project description:We fed wildtype larvae a special diet that lacks precursor molecules necessary for the synthesis of the molting hormone ecdysone required for pupation, thus keeping animals in the larval stage. Importantly, in these larvae, the imaginal discs grow until their terminal size is reached but they do not proceed with differentiation as this requires a pulse of ecdysone. This method thus allowed us to directly compare actively growing discs with discs at the same developmental stage that terminated proliferation after reaching their proper size.

2022-11-19 | GSE211457 | GEO

Chromatin marking is associated to transcriptional stability during fly development

Project description:We have conducted ChIP-Seq and RNA-Seq analyses in order to perform a comparative study between wing imaginal discs and eye imaginal discs from Drosophila melanogaster.

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Gene expression profile of Drosophila third instar larval wing imaginal discs overexpressing netrinA (netA) and frazzled (fra).

2013-05-21 | GSE47113 | GEO

Single-cell transcriptomic analysis of the scrib mutant wing imaginal discs

Project description:Investigation of intratumor heterogeneity in the scrib¹ mutant wing imaginal discs. Method: Staged scrib¹ wing imaginal discs were dissected and transferred to DPBS. The wing imaginal discs were dissociated in 0.25% Trypsin-EDTA solution at 37 ℃ for 10 min. Cells were then washed in DPBS and passed through 35μm filter before library preparation. Construction of 10x single cell libraries and sequencing on Illumina platform were performed by Novogene.

2019-08-27 | GSE130566 | GEO

SmD3 protein interactome in Drosophila melanogaster wing imaginal discs

Project description:Screening for binding partners of the splicing factor SmD3 and changes in interaction upon depletion of the protein Ecdysoneless (Ecd) in the nubbin domain of third-instar larval wing imaginal discs.

2021-09-09 | PXD019761 | Pride

Gene expression profile of Drosophila third instar larval wing imaginal discs overexpressing netrinA (netA) and frazzled (fra).

Project description:In order to analyze the global changes in gene expression resulting from induction of NetA-Fra signaling, we carried out a microarray experiment comparing Drosophila third instar wing imaginal discs in which Net+Fra had been overexpressed to age matched wild type wing imaginal discs. RNA extracted from both +NetA-Fra overexpression and wildtype third instar imaginal discs were hybridized to the Affymetrix GeneChip Drosophila Genome 2.0 . Heat shock induced GFP-marked clones ectopically expressing NetA+Fra in larvae were generated. Controls for this study included age matched wildtype third instar wing imaginal discs bearing GFP clones which were prepared in the same manner. Total RNA was extracted from dissected +NetA-Fra vs. control third instar wing imaginal discs and hybridized to the Affymetrix GeneChip Drosophila Genome 2.0.

2013-05-21 | E-GEOD-47113 | biostudies-arrayexpress

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