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Adult functions for the Drosophila DHR78 nuclear receptor

ABSTRACT: Adult functions for the Drosophila DHR78 nuclear receptor

PROVIDER: PRJNA418283 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6288270.fastq.gz	Fastqsanger.gz
	SRR6288271.fastq.gz	Fastqsanger.gz
	SRR6288272.fastq.gz	Fastqsanger.gz
	SRR6288273.fastq.gz	Fastqsanger.gz
	SRR6288274.fastq.gz	Fastqsanger.gz

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Adult functions for the Drosophila DHR78 nuclear receptor

Project description:Here we study the adult functions of the single Drosophila member of this subfamily, DHR78, with the goal of defining its ancestral functions in the absence of genetic redundancy. We show that DHR78 mutants have a shortened lifespan and reduced motility. Mated DHR78 mutant females display reduced triglycerides along with a reduced feeding rate. Transcriptional profiling reveals a major role for DHR78 in promoting the expression of genes that are abundantly expressed in the midgut, suggesting that it contributes to nutrient uptake. We also identify roles for DHR78 in maintaining the expression of genes in the ecdysone and Notch signaling pathways.

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Project description:DHR96 is a Drosophila member of the CAR/PXR/LXR family of Nuclear receptors. To Identify potential target genes for the DHR96 nuclear receptor we used microarray analysis to identify genes that were mis-regulated relative to control animals in the DHR96 mutant. Experiment Overall Design: Total RNA was isolated from mature adult DHR96 mutant and genetically matched Canton S controls and subjected to affymetrix microarray analysis.

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Adult functions for the Drosophila DHR78 nuclear receptor.

Project description:BackgroundThe Testicular Receptors 2 and 4 (TR2, TR4) comprise a small subfamily of orphan nuclear receptors. Genetic studies in mouse models have identified roles for TR4 in developmental progression, fertility, brain development, and metabolism, as well as genetic redundancy with TR2. Here we study the adult functions of the single Drosophila member of this subfamily, DHR78, with the goal of defining its ancestral functions in the absence of genetic redundancy.ResultsWe show that DHR78 mutants have a shortened lifespan, reduced motility, and mated DHR78 mutant females display a reduced feeding rate. Transcriptional profiling reveals a major role for DHR78 in promoting the expression of genes that are expressed in the midgut, suggesting that it contributes to nutrient uptake. We also identify roles for DHR78 in maintaining the expression of genes in the ecdysone and Notch signaling pathways.ConclusionsThis study provides a new context for linking the molecular activity of the TR orphan nuclear receptors with their complex roles in adult physiology and lifespan. Developmental Dynamics 247:315-322, 2018. © 2017 Wiley Periodicals, Inc.

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Project description:The main objective of the sudy was to characterize the functions of Drosophila Hepatocyte Nuclear Factor 4 (dHNF4) in midgut enterocytes. For this, we expressed a UAS-dHNF4 RNAi transgene under the control of mex-GAL4, which is active specifically in midgut enterocytes. We then collected adult male midguts, extracted total RNA and performed mRNA-seq. Our data demonstrate that dHNF4 acts as a master regulator of intestinal lipid metabolism in Drosophila.

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Project description:The vertebrate nuclear hormone receptor steroidogenic factor 1 (SF1; NR5A1) controls reproductive development and regulates the transcription of steroid-modifying cytochrome P450 genes. We find that the SF1-related Drosophila nuclear hormone receptor HR39 is also essential for sexual development. In Hr39 mutant females, the sperm-storing spermathecae and glandular parovaria are absent or defective, causing sterility. Our results indicate that spermathecae and parovaria secrete reproductive tract proteins required for sperm maturation and function, like the mammalian epididymis and female reproductive tract. Hr39 controls the expression of specific cytochrome P450 genes and is required in females both to activate spermathecal secretion and repress male-specific courtship genes such as takeout. Thus, a pathway that, in vertebrates, controls sex-specific steroid hormone production, also mediates reproductive functions in an invertebrate. Our findings suggest that Drosophila can be used to model more aspects of mammalian reproductive biology than previously believed. Experiment Overall Design: Wild type and Hr39(04443) Spermathecae, Wild type and Hr39(04443) Reproductive Tract

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