Drosophila melanogaster
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA169901 | ENA |
REPOSITORIES: ENA
Similar Datasets
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
Project description:In order to test the hypothesis that adult hybrid misexpression results from the cascading effect of earlier-expressed developmentally important improperly regulated genes, as well as address whether Von Baer’s 3rd law (suggesting that earlier stages of development should be more similar between species than later stages) holds at the level of gene expression, we conducted whole-transcriptome Drosophila melanogaster cDNA microarray-based expression profiling of males of D. melanogaster, D. sechellia, and D. simulans, at four synchronized developmental time-points (3rd instar larval [larval], early pupal, late pupal, and newly-emerged adult [adult]). D. simulans and D. sechellia shared a most recent common ancestor (MRCA) ~0.5 to 1.0 million years ago (MYA) and form a clade that shared an MRCA with D. melanogaster approximately 5.4 MYA. In addition, we also performed the same analysis on the male interspecific F1 hybrids of the D. simulans (♀) × D. sechellia (♂) cross.
2010-08-03 | GSE17535 | GEO
Project description:Hox genes regionalize the animal body axis by modifying complex morphogenetic and differentiation processes during development. The transformation of wings into halteres by the Hox gene Ultrabithorax (Ubx) in Drosophila melanogaster presents an excellent model system to study the transcriptional networks that control such complex developmental programmes. We have employed an inducible misexpression system to switch on Ubx in the wing epithelium at successive larval, prepupal and pupal stages, and have used microarray expression profiling to identify the primary transcriptional responses to Ubx. We find that Ubx regulates hundreds of downstream genes, mostly in a subtle manner. These targets are largely distinct at the different stages of appendage development and diversification.
2010-12-31 | GSE22354 | GEO
Project description:The goal of this gene expression profiling experiment was to identify the entire set of transcription factors expressed during late pupal wing development (~80h APF) when pigmentation genes are expressed We used Affymetrix microarrays to profile the expression of the transcription factors in late pupal wings of Oregon R flies. The staging of the flies was made by eye, based on the extent of wing pigmentation. RNA was extracted from batches of 40 flies and three biological replicates were analyzed.
2013-02-01 | E-GEOD-43673 | biostudies-arrayexpress
Project description:The goal of this gene expression profiling experiment was to identify the entire set of transcription factors expressed during late pupal wing development (~80h APF) when pigmentation genes are expressed
2013-02-01 | GSE43673 | GEO
Project description:Spermiogenesis in Drosophila melanogaster is a highly conserved process and essential for male fertility. In this haploid phase of spermatogenesis, motile sperm are assembled from round cells, flagella are assembled, and needle-shaped nuclei with highly compacted genomes are formed. We aimed at identifying proteins relevant for the maturation phase from spermatids to sperm. As transcription takes place mainly in spermatocytes, and transcripts with relevance for post-meiotic sperm development are translationally repressed for days, we comparatively analysed the prote-ome of larval testes (stages before meiotic divisions), of testes of 1–2-day-old pupae (meiotic and early spermatid stages) and adult flies (late spermatids and sperm). We identified 6677 pro-teins, with 422 solely detected in larval testes, 623 in pupal testes and 634 in adult testes. We analysed a few so far uncharacterized proteins with repect to stage specific expression and im-portance for male fertility. For example, Mst84B (gene CG1988), a very basic cysteine- and lysine-rich nuclear protein, was present in the phase of transition from a histone-based to a pro-tamine-based chromatin structure. CG6332 encodes d-Theg, which is related to the mouse tHEG and human THEG proteins. Mutants of d-Theg lacked sperm in the seminal vesicles and were sterile. The identification of numerous predicted proteins underscores the high potential of pro-teome analysis for future analyses of spermatogenesis.
2019-02-01 | PXD010627 | Pride
Project description:Hox genes regionalize the animal body axis by modifying complex morphogenetic and differentiation processes during development. The transformation of wings into halteres by the Hox gene Ultrabithorax (Ubx) in Drosophila melanogaster presents an excellent model system to study the transcriptional networks that control such complex developmental programmes. We have employed an inducible misexpression system to switch on Ubx in the wing epithelium at successive larval, prepupal and pupal stages, and have used microarray expression profiling to identify the primary transcriptional responses to Ubx. We find that Ubx regulates hundreds of downstream genes, mostly in a subtle manner. These targets are largely distinct at the different stages of appendage development and diversification. We have generated an experimental fly line combining the nabGal4NP3537-driver, a tub-GAL80ts transgene, and a UAS-UbxIa transgene (the control line was carrying a UAS-eGFP transgene instead). Our core microarray analysis has involved comparison of the transcriptional profile of experimental wings carrying the UAS-UbxIa transgene with that of control wings carrying the UAS-eGFP transgene. Pairwise comparisons have been carried out at three successive developmental stages, in particular at (i) the third instar larval wandering stage, about 4hrs before puparium formation at 29˚C, (ii) the prepupal stage, 6hrs after puparium formation (APF) at 29˚C, and (iii) the early pupal stage, 16hrs APF at 29˚C. Moreover, pairwise comparisons have been carried out with samples developed exclusively at 19˚C (UbxIa or eGFP expression OFF), as well as with samples collected at 16hrs after the temperature shift from 19 to 29˚C (UbxIa or eGFP expression ON). This has allowed us to distinguish the Ubx-dependent effects from the intrinsic expression differences between the fly lines used, and from the temperature-induced responses. We have carried out 4 biological replicates for each condition making a total of 48 hybridizations to Affymetrix Drosophila Genome 2.0 arrays.
2010-12-31 | E-GEOD-22354 | biostudies-arrayexpress
Project description:Comparative analysis of gene expression changes upon Cabut or dE2F1/dDP overexpression in the Drosophila wing
| PRJNA143475 | ENA
Project description:Aim: mRNA profile of larval wing imaginal discs of Drosophila melanogaster to study the cooperation between Notch activation and loss of epithelial polarity (scrib mutation) during neoplastic growth. Results: The combination of Notch activation and scribble mutation (NS) results in mRNA expression changes that, while partly overlapping with Notch only (N), and with scrib mutation only (S), are unique to the combination
2021-10-07 | GSE185339 | GEO
Project description:Genes with sex-biased expression in adults experience unique evolutionary dynamics. It is unclear, however, whether the selection pressures responsible for these well documented patterns also act upon genes with sex-biased expression in other developmental stages. To examine this, we measured expression in male and female Drosophila melanogaster larvae. Drosophila melanogaster wandering third instar larvae were sexed using the visible gonad. RNA was isolated from three replicate samples of male and female larvae and one sample each of adult males and females. RNA was prepared following the manufacturer's instructions, using single color labelling. Each sample/replicate was hybridized to one sector of the Agilent 4 sector array (a total of two arrays were used), with the following design: Array 1 had one larval male sample, one larval female sample, one adult male sample, and one adult female sample; Array 2 had two larval male samples and two larval female samples.
2012-04-07 | E-GEOD-31722 | biostudies-arrayexpress