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Drosophila melanogaster

ABSTRACT: Transcriptome analysis of Drosophila Kr-h1 mutants

PROVIDER: PRJNA339575 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR4045130_1.fastq.gz	Fastqsanger.gz
	SRR4045130_2.fastq.gz	Fastqsanger.gz
	SRR4045131_1.fastq.gz	Fastqsanger.gz
	SRR4045131_2.fastq.gz	Fastqsanger.gz
	SRR4045132_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis of Drosophila Kr-h1 mutants

Project description:Transcriptome analysis (RNA-Seq) was performed to identify Kr-h1 target genes. Message RNAs were extracted from wildtype and kr-h1[7] homozygous 3rd instar larvae at 100 hr after egg laying (two biological replicates for each genotype).

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Chronic sleep loss sensitizes Drosophila melanogaster to nitrogen stress

Project description:<p>Chronic sleep loss profoundly impacts metabolic health and shortens lifespan, but studies of the mechanisms involved have focused largely on acute sleep deprivation. To identify metabolic consequences of chronically reduced sleep, we conducted unbiased metabolomics on heads of three adult Drosophila short-sleeping mutants with very different mechanisms of sleep loss: fumin (fmn), redeye (rye), and sleepless (sss). Common features included elevated ornithine and polyamines, with lipid, acyl-carnitine, and TCA cycle changes suggesting mitochondrial dysfunction. Studies of excretion demonstrate inefficient nitrogen elimination in adult sleep mutants, likely contributing to their polyamine accumulation. Increasing levels of polyamines, particularly putrescine, promote sleep in control flies but poison sleep mutants. This parallels the broadly enhanced toxicity of high dietary nitrogen load from protein in chronically sleep-restricted Drosophila, including both sleep mutants and flies with hyper-activated wake-promoting neurons. Together, our results implicate nitrogen stress as a novel mechanism linking chronic sleep loss to adverse health outcomes-and perhaps for linking food and sleep homeostasis at the cellular level in healthy organisms.</p>

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