Sequencing of RNA and footprints of wildtype and RpS5b mutant Drosophila ovaries [RIBO-seq]
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ABSTRACT:
PROVIDER: PRJNA714407 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13961020.fastq.gz | Fastqsanger.gz | |||
| SRR13961021.fastq.gz | Fastqsanger.gz | |||
| SRR13961022.fastq.gz | Fastqsanger.gz | |||
| SRR13961023.fastq.gz | Fastqsanger.gz |
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Project description:Sequencing of RNA and footprints of wildtype and RpS5b mutant Drosophila ovaries
| PRJNA714404 | ENA
Project description:Sequencing of RNA and footprints of wildtype and RpS5b mutant Drosophila ovaries [RNA-seq]
| PRJNA714408 | ENA
Project description:Emerging evidence suggests that ribosome heterogeneity may have important functional consequences in the translation of specific mRNAs within different cell types and under various conditions. Ribosome heterogeneity comes in many forms including post-translational modification of ribosome proteins (RPs), lack of specific RPs, and different RP paralogs incorporation. The Drosophila genome encodes for two RPS5 paralogs, RpS5a and RpS5b. While RpS5a is expressed ubiquitously, RpS5b exhibits enriched expression in the reproductive system. Deletion of RpS5b results in female sterility marked by developmental arrest of egg chambers at stages 7-8 and posterior follicle cell (PFC) hyperplasia. Both phenotypes are caused by defects in the germline and over-expression of RpS5a can compensate it. RpS5b mutant display increased rRNA transcription and RP production, accompanied by increased protein synthesis. Loss of RpS5b leads to microtubule-based defects and mislocalization of several factors, leading failure of Notch pathway activation in PFCs. Together, our results indicate that germ cell specific expression of RpS5b promotes proper egg chamber development by regulating both ribosome homeostasis and protein trafficking during mid-oogenesis.
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Project description:Purpose: To identify significantly different individual mRNA species or genetic pathways in the GCNAKO mutant sample when compared to the wildtype sample. GCNA is encoded by CG14814 (Flybase ID: FBgn0023515). Method: Total RNA was extracted using the Qiagen miRNEasy kit, followed by on column DNAse digest using the Qiagen DNAse digest kit. We used the miRNEasy kit to ensure collection of small RNA species as well as total RNA. RNA was collected from three independent bological replicates of freshly dissected Drosophila ovaries ( 100 ovaries per replicate), collected from 1-3 day old female Drosophila. Ovaries were flash frozen in liquid nitrogen after dissection to preserve the RNA species and prevent degradation. RNAse free conditions were maintained throughout the extraction protocol. RNA quality was tested by the sequencing core before sequencing the RNA.
2019-10-22 | GSE127220 | GEO
Project description:Developmental gene expression results from the orchestrated interplay between genetic and epigenetic mechanisms. Here, we describe upSET, a transcriptional regulator encoding a SET domaincontaining protein recruited to active and inducible genes in Drosophila. However, unlike other Drosophila SET proteins associated with gene transcription, UpSET is part of an Rpd3/Sin3-containing complex that restricts chromatin accessibility and histone acetylation to promoter regions. In the absence of UpSET, active chromatin marks and chromatin accessibility increase and spread to genic and flanking regions due to destabilization of the histone deacetylase complex. Consistent with this, transcriptional noise increases, as manifest by activation of repetitive elements and off-target genes. Interestingly, upSET mutant flies are female sterile due to upregulation of key components of Notch signaling during oogenesis. Thus UpSET defines a class of metazoan transcriptional regulators required to fine tune transcription by preventing the spread of active chromatin. A six chip study using total RNA recovered from three separate dissections wild-type ovaries and three separate dissections of epic mutant ovaries. Each chip measures the expression level of 15,473 genes from Drosophila melanogaster with four 60-mer probes per target gene. Investigation of whole genome gene expression level changes in epic(e00365) mutants, compared to the wild-type strain (OregonG). The mutation was generated by the insertion of the PBac{WH}CG9007e000365 transposon. The mutants analyzed in this study are further described in Rincon-Arano H., et al 2012. in Press.
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Project description:H3K27me3 profiles using Cleavage under targets and Release using nuclease (Cut&Run) in control and KD Drosophila melanogaster ovaries. We examined the impact on chromatin profiles in Drosophila melanogaster ovaries in which the lid, the Sin3a, the Snr1 or the mod(mdg4) gene have been selectively knocked down by tissue-specific shRNA expression. We additionally explored H3K27me3 and H3K9me3 in control and dhd mutant ovaries either carrying or not a transgene.
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Project description:Single cell RNA-seq (scRNA-seq) from Trim28 ovary knockout and wildtype mice ovaries and testis to help elucidate the function of Trim28 in the adult mouse ovaries. The analysis revealed that loss of Trim28 in the adult mouse ovaries lead to a transcriptional repogramming of the Granulosa cells towards the Sertoli cell fate. Therefore, Trim28 has a function to maintain the adult ovarian cell identity
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Project description:Emerging evidence suggests that ribosome heterogeneity may have important functional consequences in the translation of specific mRNAs within different cell types and under various conditions. Ribosome heterogeneity comes in many forms including post-translational modification of ribosome proteins (RPs), lack of specific RPs, and different RP paralogs incorporation. The Drosophila genome encodes for two RPS5 paralogs, RpS5a and RpS5b. While RpS5a is expressed ubiquitously, RpS5b exhibits enriched expression in the reproductive system. Deletion of RpS5b results in female sterility marked by developmental arrest of egg chambers at stages 7-8 and posterior follicle cell (PFC) hyperplasia. Both phenotypes are caused by defects in the germline and over-expression of RpS5a can compensate it. RpS5b mutant display increased rRNA transcription and RP production, accompanied by increased protein synthesis. Loss of RpS5b leads to microtubule-based defects and mislocalization of several factors, leading failure of Notch pathway activation in PFCs. Together, our results indicate that germ cell specific expression of RpS5b promotes proper egg chamber development by regulating both ribosome homeostasis and protein trafficking during mid-oogenesis.
2021-09-17 | GSE168877 | GEO
Project description:Foxl2 is a forkhead transcription factor expressed only in the female, but not in the male gonad. We have created mice homozygous mutant for the Foxl2 gene (KO) as well as mice carrying a conditional mutant Foxl2 allele (floxed). The expression profiles of conventional Foxl2 knockout and wildtype ovaries were compared at P3, using the Affy Mouse Genome 430 2.0 Array. Adult wildtype and conditional mutant (Foxl2 floxed x RosaCre-EBD treated with tamoxifen) ovaries were compared to adult wildtype testes using the Affymetrix Mouse Gene 1.0 ST Array. Both experiments (KO/WT P3 and Mutant/WT/Testis Adult were also compared to each other.)
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Project description:Developmental gene expression results from the orchestrated interplay between genetic and epigenetic mechanisms. Here, we describe upSET, a transcriptional regulator encoding a SET domaincontaining protein recruited to active and inducible genes in Drosophila. However, unlike other Drosophila SET proteins associated with gene transcription, UpSET is part of an Rpd3/Sin3-containing complex that restricts chromatin accessibility and histone acetylation to promoter regions. In the absence of UpSET, active chromatin marks and chromatin accessibility increase and spread to genic and flanking regions due to destabilization of the histone deacetylase complex. Consistent with this, transcriptional noise increases, as manifest by activation of repetitive elements and off-target genes. Interestingly, upSET mutant flies are female sterile due to upregulation of key components of Notch signaling during oogenesis. Thus UpSET defines a class of metazoan transcriptional regulators required to fine tune transcription by preventing the spread of active chromatin. Total mRNA from wildtype and epic mutant ovaries was extracted, labeled and hyb on a custom tiling arrays. Two biological replicates were performed.
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