Drosophila melanogaster
Ontology highlight
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REPOSITORIES: ENA
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Project description:Expression analysis of Drosophila melanogaster's primordial germ cells and somatic cells in wild type and smaug mutants
| PRJNA149579 | ENA
Project description:RNAs associated with LARK in Drosophila pharate adult brain
| PRJNA99485 | ENA
Project description:FLX sequencing of Piwi-associated small RNAs extracted from Drosophila ovarian somatic cells (OSC)
| PRJNA114895 | ENA
Project description:Effects of Sxl on gene expression in the male head of Drosophila
| PRJNA103397 | ENA
Project description:N6-methyladenosine (m6A) has recently emerged as a widespread and conserved RNA modification that modulates messenger RNA (mRNA) processing and activity. As most m6A studies have been conducted in cultured cells, we established Drosophila as a model system that combines molecular and genomic analyses of m6A with investigations of organismal biology. We first apply miCLIP sequencing to map m6A modifications at single-nucleotide resolution during Drosophila embryogenesis. We next characterize Drosophila components of the m6A "writer" methyltransferase complex [MTC factors, METTL3/IME4, METTL14, FL(2)D and Nito], and characterize m6A-binding properties of the YTH domain-containing proteins, YT521-B and CG6422. We complement this by generating a collection of mutants in m6A writer and reader components. While Drosophila orthologs of mammalian MTC factors that have additional roles in splicing are lethal, our mutants in METTL and YTH factors are viable but present specific developmental and behavioral defects. We note that several mammalian m6A factors were originally identified as Drosophila regulators of Sxl splicing, which generates the master determinant of female identity. While our mutants in dedicated writer and reader machinery are not required to accumulate Sxl protein in the ovary, maternal loss of m6A writers and readers collaborates with reduction of Sxl to induce female lethality. Our data indicate Sxl is directly regulated by the m6A pathway, since miCLIP data show Sxl is a substantial target of intronic m6A in early embryos, in addition to bearing exonic m6A. Consistent with this, female-specific Sxl splicing is defective in m6A pathway mutants. YT521-B appears to be the major effector of m6A for Sxl regulation, as it shows much stronger genetic interactions with Sxl than CG6422 and YT521-B overexpression can induce female-specific Sxl splicing. Overall, our transcriptomic and genetic toolkit for studying the m6A pathway in Drosophila reveals a major biological utilization in establishing sex-specific splicing.
2017-04-22 | GSE97004 | GEO
Project description:Compare the distribution of H3K4me3 between two experimental conditions (WT and Germ cell specific Lid KD) in Drosophila ovaries
2019-12-11 | GSE133202 | GEO
Project description:Heterochromatin, representing the silenced state of transcription, largely consists of transposon-enriched and highly repetitive sequences. Implicated in heterochromatin formation and transcriptional silencing in Drosophila are PIWI and repeat-associated small interfering RNAs (rasiRNAs). Despite this, the role of PIWI in rasiRNA expression and heterochromatic silencing remains unknown. Here we report the identification and characterization of 12,903 PIWI-interacting RNAs (piRNAs) in Drosophila, demonstrating that rasiRNAs represent a subset of piRNAs. Keywords: PIWI, piRNA, epigenetic regulation, heterochromatin
2007-10-25 | GSE9138 | GEO
Project description:Sex-lethal (Sxl), a feminizing switch gene in Drosophila, also generates male-specific proteins and non-sex-specific mRNAs, despite the fact that deleting the gene from males causes no obvious phenotypic abnormalities. We specifically investigate how Sxl may affect gene expression in the male head, where SXL isoforms have been detected. The information may help us understand how Sxl acquired its functional roles in sex determination during evolution in Drosophila Keywords: Comparative expression, genetic modification
2008-12-30 | GSE9571 | GEO
Project description:Heterochromatin-associated interactions of Drosophila HP1 with dADD1, HIPP1, and repetitive RNAs
| PRJNA243597 | ENA
Project description:To understand dynamics of embryonic transcriptome in a high resolution, whole bodies of embryos were collected at 12 time points during the embryogenesis and were subjected to microanalyses. These data were originally obtained aiming to compare to our other microarray data [GSE83460] of PGCs (primordial germ cells; pole cells).
2017-12-24 | GSE102307 | GEO