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Drosophila melanogaster

ABSTRACT: Genomic occupancy profile of Rbf and Dp in flight muscles of WT Drosophila pharate

PROVIDER: PRJNA396483 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5883310.fastq.gz	Fastqsanger.gz
	SRR5883311.fastq.gz	Fastqsanger.gz
	SRR5883312.fastq.gz	Fastqsanger.gz
	SRR5883313.fastq.gz	Fastqsanger.gz
	SRR8424027.fastq.gz	Fastqsanger.gz

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Genomic occupancy profile of Rbf and Dp in flight muscles of WT Drosophila pharate

Project description:Our study focuses on understanding the genomic occupancy profile of Rbf and Dp in flight muscles of D. melanogaster. We analyzed Rbf and Dp occupancy by ChIP-seq using Rbf and Dp antibodies in dissected flight muscles of pharate flies (WT)

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Project description:Our study focuses on understanding the changes in chromatin accessibility in the Pgk-DeltaE2F mutant that takes place during flight muscles development in Drosophila. E2F binding sites were mutated upstream Pgk gene. E2F/Dp/Rbf were no longer recruited to this regulatory region. As a result of this, the expression of Pgk mRNA was downregulated, which led to reduced levels in many metabolites that are glycolytic and TCA intermediates. Using ATAC-seq we determined that there was a global reduction in chromatin accessibility in the mutant compared to control, and it was accompagnied by a widespread reduction in gene expression, including metabolic genes. In addition we identified a broad range of phenotypes when analyzing the functional relevance of E2F regulation on Pgk gene. These phenotypes range from low ATP content, abnormal mitochondrial morphology, shortened life span to embrionic lethality. Furthermore, defects in high-energy consuming organs, such as ovaries and muscles, were found. In sum, our results illustrate the pleiotropic effects on metabolism, gene expression and development in the Pgk-deltaE2F animals, which underlies the importance of E2F regulation on a single E2F target, Pgk.

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The RNA binding protein Arrest (Aret) regulates myofibril maturation in Drosophila flight muscle

Project description:In Drosophila, fibrillar flight muscles (IFMs) enable flight, while tubular muscles mediate other body movements. Here, we use RNA-sequencing and isoform-specific reporters to show that spalt major (salm) determines fibrillar muscle physiology by regulating transcription and alternative splicing of a large set of sarcomeric proteins. We identify the RNA binding protein Arrest (Aret, Bruno) as downstream of salm. Aret shuttles between cytoplasm and nuclei, and is essential for myofibril maturation and sarcomere growth of IFMs. Molecularly, Aret regulates IFM-specific transcription and splicing of various sarcomeric targets, including Stretchin and wupA (TnI), and thus maintains muscle fiber integrity. As Aret and its sarcomeric targets are evolutionarily conserved, similar principles may regulate mammalian muscle morphogenesis. 9 samples from Drosophila melanogaster were analyzed in duplicate: control dissected wildtype flight muscle at 30h APF, 72h APF and 0 day adult, jump muscle and whole leg from 1d adult and RNAi/mutant conditions for salm (1d flight muscle) and aret (30h, 72h and 1d flight muscle)

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