Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

SRNA profiles of control adults, postdauer adults, larva L3, and dauer stages of C. elegans

ABSTRACT: Early environmental experiences and life histories profoundly influence adult phenotypes via as yet poorly understood mechanisms. We previously showed that wild-type adult C. elegans that transiently passed through the stress-induced dauer larval stage (post-dauers) exhibit different gene expression patterns, genome-wide chromatin structure, and life history traits when compared to adults that bypassed the dauer stage (controls). Here we show that endogenous small inhibitory RNAs (endo-siRNAs) and siRNA pathways may mediate developmental history-dependent phenotypic diversity. Deep sequencing of small RNA libraries show changes in endo-siRNA levels in post-dauer as compared to control animals, and meta analyses indicate that specific endo-siRNA pathways are targets of developmental history-dependent reprogramming. We demonstrate that mutations in specific endo-siRNA pathways affect the expected gene expression and chromatin state changes in post-dauer animals, and also disrupt their increased brood size phenotype. We find that the chromatin state and endo-siRNA distribution in dauers is also distinct and suggest that this remodeling in dauers provides a template for the subsequent establishment of adult post-dauer profiles. Together, our results imply a critical mechanistic role for endo-siRNA pathways in mediating early experience-dependent phenotypic divergence in adults, and suggest that regulation of these pathways contribute to increased fitness via non-genetic mechanisms.

ORGANISM(S): Caenorhabditis elegans

PROVIDER: GSE33313 | GEO | 2013/04/05

SECONDARY ACCESSION(S): PRJNA149307

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

sRNA profiles of control adults, postdauer adults, larva L3, and dauer stages of C. elegans

Project description:Early environmental experiences and life histories profoundly influence adult phenotypes via as yet poorly understood mechanisms. We previously showed that wild-type adult C. elegans that transiently passed through the stress-induced dauer larval stage (post-dauers) exhibit different gene expression patterns, genome-wide chromatin structure, and life history traits when compared to adults that bypassed the dauer stage (controls). Here we show that endogenous small inhibitory RNAs (endo-siRNAs) and siRNA pathways may mediate developmental history-dependent phenotypic diversity. Deep sequencing of small RNA libraries show changes in endo-siRNA levels in post-dauer as compared to control animals, and meta analyses indicate that specific endo-siRNA pathways are targets of developmental history-dependent reprogramming. We demonstrate that mutations in specific endo-siRNA pathways affect the expected gene expression and chromatin state changes in post-dauer animals, and also disrupt their increased brood size phenotype. We find that the chromatin state and endo-siRNA distribution in dauers is also distinct and suggest that this remodeling in dauers provides a template for the subsequent establishment of adult post-dauer profiles. Together, our results imply a critical mechanistic role for endo-siRNA pathways in mediating early experience-dependent phenotypic divergence in adults, and suggest that regulation of these pathways contribute to increased fitness via non-genetic mechanisms. We deep-sequenced small RNA libraries from 2 biological replicates each of control and postdauer adults, and one biological each of larval L3 and dauer stages.

2013-04-05 | E-GEOD-33313 | biostudies-arrayexpress

Pristionchus pacificus and Caenorhabditis elegans: Dauer and Dauer exit versus mix-stage comparisons

Project description:This SuperSeries is composed of the following subset Series: GSE30977: C. elegans: Dauers and Dauer-Exit at 12 hour time-point vs. Mix-stage worms GSE31861: P. pacificus : Dauers and Dauer-Exit at 12 hour time-point vs. Mix-stage worms Refer to individual Series

2012-03-22 | E-GEOD-36644 | biostudies-arrayexpress

RNA-seq of whole animal tissue and AWA olfactory neurons isolated by FACS from control and post-dauer L4 larval stage C. elegans

Project description:Developmental experiences play critical roles in shaping adult physiology and behavior. We and others previously showed that adult C. elegans which transiently experienced dauer arrest during development (PD: post-dauer) exhibit distinct gene expression profiles as compared to control adults which bypassed the dauer stage. In particular, the expression patterns of subsets of chemoreceptor genes are markedly altered in PD adults. Whether altered chemoreceptor levels drive plasticity in chemosensory behaviors in PD adults is unknown. Via transcriptional profiling of sorted populations of AWA neurons from control and PD adults, we further show that the expression of a subset of chemoreceptor genes in AWA are differentially regulated in PD animals. Our results suggest that developmental experiences may be encoded at the level of olfactory receptor regulation, and provide an elegant mechanism by which C. elegans is able to precisely modulate its behavioral preferences as a function of its current and past experiences.

2022-09-07 | E-MTAB-11823 | biostudies-arrayexpress

P. pacificus : Dauers and Dauer-Exit at 12 hour time-point vs. Mix-stage worms

Project description:Transcriptional profiling of P. pacificus worms from (1) dauer stage, or (2) dauer-exit at 12 hours stage, compared to mix-stage worms as a common reference. The goal was to determine genes regulated during dauer development and recovery or exit from dauer stage. This data was then compared to data generated for corresponding developmental stages in the C. elegans (see NCBI GEO series GSE30977) , to study evolution of developmental pathways regulating dauer development. Two-condition experiments. Experiment 1 = Dauers vs. Mix-stage worms. 4 biological replicates for each condition, including 2 dye-swaps. Experiment 2 = Dauer-Exit at 12 hour time-point s vs. Mix-stage worms. 3 biological replicates for each condition, including 1 dye-swaps. Total samples from both experiments 1 and 2 = 7.

2011-09-02 | E-GEOD-31861 | biostudies-arrayexpress

C. elegans: Dauers and Dauer-Exit at 12 hour time-point vs. Mix-stage worms

Project description:Transcriptional profiling of C. elegans worms from (1) dauer stage, or (2) dauer-exit at 12 hours stage, compared to mix-stage worms as a common reference. The goal was to determine genes regulated during dauer development and recovery or exit from dauer stage. This data was then compared to data generated for corresponding developmental stages in the nematode Pristionchus pacificus (separate data-sets on a custom microarray platform designed by us and manufactured by Agilent) , to study evolution of developmental pathways regulating dauer development. Two-condition experiments. Experiment 1 = Dauers vs. Mix-stage worms. 4 biological replicates for each condition, including 2 dye-swaps. Experiment 2 = Dauer-Exit at 12 hour time-point s vs. Mix-stage worms. 4 biological replicates for each condition, including 2 dye-swaps. Total samples from both experiments 1 and 2 = 8.

2011-07-27 | E-GEOD-30977 | biostudies-arrayexpress

Comparative Transcriptomics of heads and tails between Steinernema carpocapsae and Caenorhabditis elegans

Project description:we used short-reads to perform a comparative analysis S. carpocapsae ALL strain IJs and young adults and C.elegans dauer strain N2 and young adult strain him-8.

2020-08-18 | GSE156356 | GEO

RNAseq of dauer-forming C. elegans L2d in daf-2 and daf-2;daf-42

Project description:Under adverse environmental conditions, nematodes arrest into dauer, an alternative developmental stage for diapause. Dauers endure unfavorable environment and interact with host animals to access favorable environments, thus playing a critical role in the survival of both free-living and parasitic nematodes. Here, we discovered that in Caenorhabditis elegans, daf-42 is essential for development into dauer stage, as the null mutant shows lethal phenotype during dauer entry. To examine the transcriptional changes accompanied by the absence of DAF-42 during dauer entry, we performed RNA-sequencing on daf-2 and daf-2; daf-42 worms at 52 hours after egg laying (HAE) and 60 HAE, the time at which 0% and about 40% of daf-2; daf-42 mutants form dead dauer at 25 degrees Celcius, respectively. daf-2 control worms develop into dauer stage after 60 HAE, and half of its population develop into dauer by 72 HAE, when raised at 25 degrees Celcius.

2023-04-23 | GSE230353 | GEO

Transcription profiling of C. elegans wild type L2 or L3 larvae (non-dauer) vs TGFbeta mutants at similar developmental stages undergoing dauer formation

Project description:BACKGROUND: When resources are scant, C. elegans larvae arrest as long-lived dauers under the control of insulin/IGF- and TGFbeta-related signaling pathways. RESULTS: We have identified genes that show different levels of expression in a comparison of wild-type L2 or L3 larvae (non-dauer) to TGFbeta mutants at similar developmental stages undergoing dauer formation. Many insulin/IGF pathway and other known dauer regulatory genes have changes in expression that suggest strong positive feedback by the TGFbeta pathway. In addition, many insulin-like ligand and novel genes with similarity to the extracellular domain of insulin/IGF receptors have altered expression. We have identified a large group of regulated genes with putative binding sites for the FOXO transcription factor, DAF-16. Genes with DAF-16 sites upstream of the transcription start site tend to be upregulated, whereas genes with DAF-16 sites downstream of the coding region tend to be downregulated. Finally, we also see strong regulation of many novel hedgehog- and patched-related genes, hormone biosynthetic genes, cell cycle genes, and other regulatory genes.

2006-01-06 | E-SMDB-3596 | biostudies-arrayexpress

The C. elegans transcriptome is regulated by environmental and developmental history

Project description:We show that C. elegans adults that passed through the stress-resistant dauer stage due to starvation exhibit opposite transcriptional profiles compared to adults that entered dauer due to crowding, and are distinct from animals that bypassed dauer. These “seesaw” trends in gene expression extend to a majority of genes in the genome and, based upon the direction of change, are enriched on different chromosomes.

2017-12-27 | GSE92954 | GEO

Transcription profiling of dauer gene expression in Caenorhabditis elegans

Project description:These are the 94 microarray experiments that are published in the paper: John Wang and Stuart K. Kim. Global analysis of dauer gene expression in Caenorhabditis elegans, Development 2003 130: 1621-1634. There are 94 individual microarray experiments divided into 3 broad experiments. The first experiment is a time course of dauer exit; each time course is labeled as "Dauer MTC#". The second experiment is a time course of L1 development after starvation arrest; each time couse is labeled "L1 MTC#". The final experiment is a comparison of pure dauers (0 hours) versus 12 hours after dauer exit and are labeled "Dauer Adjust". Every time course was repeated 4 times (#N)however for the dauer 4 and 7 hour time points there are only 3 replicates. For instance, all the time points labeled as "Dauer MTC#1" are from the same starting pool of dauer worms that were aliquoted into 10 fractions and analyzed at the time indicated. Every sample is compared to a common reference RNA that is used throughout all the hybridizations. In some cases there is a "-2" after the hour designation; this means the first hybridization failed for some technical reason and thus the second hybridization (same RNA) is reported.

2005-07-13 | E-SMDB-1964 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data