Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

RNA-binding protein Syncrip regulates Starvation-Induced Hyperactivity in adult Drosophila

ABSTRACT: How to respond to starvation determines fitness. One prominent behavioral response is increased locomotor activities upon starvation, also known as Starvation-Induced Hyperactivity (SIH). SIH is paradoxical as it promotes food seeking but also increases energy expenditure. Despite its importance in regulating fitness, the genetic contributions to SIH as a behavioral trait remains unexplored. Here, we examined SIH in the Drosophila melanogaster Genetic Reference Panel (DGRP) and performed genome-wide association studies. We identified 27 significant loci, corresponding to 18 genes, significantly associated with SIH in adult Drosophila. Gene enrichment analyses indicated that genes encoding ion channels and mRNA binding proteins (RBPs) were most enriched in SIH. We are especially interested in RBPs because they provide a potential mechanism to quickly change protein expression in response to environmental challenges. Using RNA interference, we validated the role of Syp in regulating SIH. Syp encodes Syncrip, an RBP. While ubiquitous knockdown of Syp led to lethality during development, adult flies with neuron specific Syp knockdown were viable and exhibited decreased SIH. Using the Temporal and Regional Gene Expression Targeting (TARGET) system, we further confirmed the role of Syp in adult neurons in regulating SIH. Lastly, RNA-seq analyses revealed that Syp was alternatively spliced under starvation while its expression level was unchanged. Together, this study not only demonstrates genetic contributions to SIH as an important behavioral trait but also highlights the significance of RBPs and post-transcriptional processes in regulating SIH.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE149790 | GEO | 2020/07/20

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Adverse effects of SYP-3343 on zebrafish development via ROS-mediated mitochondrial dysfunction

Project description:As a newly-invented and highly-efficiency strobilurin fungicide, pyraoxystrobin (SYP-3343) has been recognized as a highly poisonous toxin for a variety of aquatic organisms. Nevertheless, the developmental toxicity and potential mechanism of SYP-3343 have not been well-documented. The results showed that SYP-3343 was relatively stable and maintained within the range of 20 % in 24 h, and the LC50 value to embryos at 72 hpf was 17.13 μg/L. The zebrafish embryotoxicity induced by 1, 2, 4, and 8 μg/L SYP-3343 is demonstrated by repressive embryo incubation, enhancive mortality rate, abnormal heart rate, malformed morphological characteristic, and impaired spontaneous coiling, indicating SYP-3343 mostly exerted its toxicity in a dose- and time-dependent manner. Besides SYP-3343 was critically involved in regulating cell cycle, mitochondrial membrane potential, and reactive oxygen species production as well as zebrafish primary cells apoptosis, which can be mitigated using antioxidant N-acetyl-L-cysteine. A significant change occurred in total protein content, the biochemical indices, and antioxidant capacities owing to SYP-3343 exposure. Additionally, SYP-3343 altered the mRNA levels of heart development-, mitochondrial function-, and apoptosis-related genes in zebrafish embryos. These results indicated that SYP-3343 induced apoptosis accompanying reactive oxygen species-initiated mitochondrial dysfunction in zebrafish embryos.

2023-02-02 | GSE224231 | GEO

A variant in the neuropeptide receptor npr-1 is a major determinant of Caenorhabditis elegans growth and physiology

Project description:The mechanistic basis for how genetic variants cause differences in phenotypic traits is often elusive. We identified a quantitative trait locus in C. elegans that affects three seemingly unrelated phenotypic traits: lifetime fecundity, adult body size, and susceptibility to the human pathogen Staphyloccus aureus. We found a QTL for all three traits arises from variation in the neuropeptide receptor gene npr-1. Moreover, we found that variation in npr-1 is also responsive for differences in 247 gene expression traits. Variation in npr-1 is known to determine whether animals disperse throughout a bacterial lawn or aggregate at the edges of the lawn. We found that the allele that leads to aggregation is associated with reduced growth and reproductive output. The altered gene expression pattern caused by this allele suggests that the aggregation behavior might cause a weak starvation state, which is known to reduce growth rate and fecundity. Importantly, we show that variation in npr-1 causes each of these phenotypic differences through behavioral avoidance of ambient oxygen concentrations. These results suggest that variation in npr-1 has broad pleiotropic effects mediated by altered exposure to bacterial food. Two-channel experiment comparing mixed stage sample to mixed stage mixed 50:50 N2,CB4856 common reference

2013-07-30 | E-GEOD-49307 | biostudies-arrayexpress

Influence of early life exposure, host genetics and diet on the mouse gut microbiome and metabolome

Project description:Although the gut microbiome plays important roles in host physiology, health and disease, we lack understanding of the complex interplay between host genetics and early life environment on the microbial and metabolic composition of the gut. We used the genetically diverse Collaborative Cross mouse system to discover that early life history impacts the microbiome composition, whereas dietary changes have only a moderate effect. By contrast, the gut metabolome was shaped mostly by diet, with specific non-dietary metabolites explained by microbial metabolism. Quantitative trait analysis identified mouse genetic trait loci (QTL) that impact the abundances of specific microbes. Human orthologues of genes in the mouse QTL are implicated in gastrointestinal cancer. Additionally, genes located in mouse QTL for Lactobacillales abundance are implicated in arthritis, rheumatic disease and diabetes. Furthermore, Lactobacillales abundance was predictive of higher host T-helper cell counts, suggesting an important link between Lactobacillales and host adaptive immunity. Correlations between specific operational taxonomic units (OTUs) and B-cell counts, body weight and neuromuscular function (rotarod performance) were also observed. This study is the first to determine and rank the complex contributions of built environment, host genetics and diet in shaping gut microbial and metabolite composition, host fitness and behavior.

2016-10-05 | MTBLS345 | MetaboLights

Trait tacking for predictive evolution of metabolic pheotypes

Project description:Adaptive laboratory evolution is highly effective for improving desired traits through natural selection. However, its applicability is inherently constrained to growth-correlated traits precluding traits of interest that incur a fitness cost, such as metabolite secretion. Here, we introduce the concept of tacking trait enabling naturalÂ selection of fitness-costly metabolic traits. The concept is inspired from the tacking maneuver used in sailing for traversing upwind.Â We use first-principle metabolic models to design an evolution niche wherein the tacking trait and fitness become correlated. Adaptive evolution in this niche, when followed by the reversal to the original niche, manifests in the improvement of the desired trait due to biochemical coupling between the tacking and the desired trait. We experimentally demonstrate this strategy, termed EvolveX, by evolving wine yeasts for increased aroma production. Our results pave the way for precision laboratory evolution for biotechnological and ecological applications.

2022-07-12 | PXD023171 | Pride

RNA-seq of wine yeast strains, parental and adaptively evolved for selective increase in aroma compounds originating in branched-chain or aromatic amino acid pathway

Project description:Adaptive laboratory evolution is highly effective for improving desired traits through natural selection. However, its applicability is inherently constrained to growth-correlated traits precluding traits of interest that incur a fitness cost, such as metabolite secretion. Here, we introduce the concept of tacking trait enabling natural selection of fitness-costly metabolic traits. The concept is inspired from the tacking maneuver used in sailing for traversing upwind. We use first-principle metabolic models to design an evolution niche wherein the tacking trait and fitness become correlated. Adaptive evolution in this niche, when followed by the reversal to the original niche, manifests in the improvement of the desired trait due to biochemical coupling between the tacking and the desired trait. We experimentally demonstrated this strategy, termed EvolveX, by evolving wine yeasts for increased aroma production. RNA-sequencing was performed for parental and evolved strains in the respective evolution niche and in natural grape must.

2021-12-30 | E-MTAB-10019 | biostudies-arrayexpress

A variant in the neuropeptide receptor npr-1 is a major determinant of Caenorhabditis elegans growth and physiology

2013-07-30 | GSE49307 | GEO

mRNA-seq analysis of early adult C. elegans fatty acid synthesis mutant following extended L1 arrest

Project description:Early-life malnutrition increases adult disease risk in humans, but the causal changes in gene regulation, signaling, and metabolism are unclear. In the roundworm Caenorhabditis elegans, early-life starvation causes well-fed larvae to develop germline tumors and other gonad abnormalities as adults. Furthermore, reduced insulin/IGF signaling (IIS) during larval development suppresses these starvation-induced abnormalities. How early-life starvation and IIS affect adult pathology is unknown. We show that early-life starvation has pervasive effects on adult gene expression that are largely reversed by reduced IIS following recovery from starvation. Early-life starvation increases adult fatty-acid synthetase fasn-1 expression in daf-2 IIS receptor-dependent fashion, and fasn-1/FASN promotes starvation-induced abnormalities. Lipidomic analysis reveals increased levels of phosphatidylcholine in adults subjected to early-life starvation, and supplementation with unsaturated phosphatidylcholine during development suppresses starvation-induced abnormalities. Genetic analysis of fatty-acid desaturases reveals positive and negative effects of desaturation on development of starvation-induced abnormalities. In particular, the delta 3 fatty-acid desaturase fat-1 and the delta 5 fatty-acid desaturase fat-4 inhibit and promote development of abnormalities, respectively. fat-4 is epistatic to fat-1, suggesting that arachidonic acid, or lipids that contain it, promotes development of starvation-induced abnormalities. This work shows that early-life starvation and IIS converge on regulation of adult lipid metabolism, affecting stem-cell proliferation, tumor formation, and additional adult pathologies.

2022-11-08 | GSE178171 | GEO

Mapping genotype-expression associations in Heterogeneous Stock rat brains to advance behavioral genetics research [Orbitofrontal cortex]

Project description:Research into the genetic influences of impulsivity and reward motivated behavior relies heavily on outbred animal populations, including Heterogeneous Stock (HS) rats, for the genetic diversity necessary to identify genotype-trait associations. Many such associations have been detected, but it is not always clear which gene or other feature near the identified genomic location is functionally responsible for the association. Since these traits are in part mediated by gene expression, mapping the associations between genotype and gene expression in these animals will enable the discovery and deeper understanding of these trait associations. We therefore obtained genotypes and RNA-Seq gene expression for five brain regions from 88 HS rats and mapped expression quantitative trait loci (eQTLs) for each region. We identified cis-eQTLs in over 3,000 genes per brain region and validated their effect sizes using allele specific expression. This resource will enable new discoveries of the genetic influences of complex behavioral traits.

2021-04-23 | GSE173140 | GEO

Mapping genotype-expression associations in Heterogeneous Stock rat brains to advance behavioral genetics research [Prelimbic cortex]

2021-04-23 | GSE173139 | GEO

Mapping genotype-expression associations in Heterogeneous Stock rat brains to advance behavioral genetics research [Lateral habenula]

2021-04-23 | GSE173138 | GEO