Browse
Submit Data
Databases
API
Help

Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

12 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

PiRNAs and transgenerational RNA interference protect essential genes from RNA silencing in C. elegans

ABSTRACT: This data series contains small RNA high-throughput sequencing data derived from cell lysates and FLAG::HRDE-1 immunoprecipitates (IP) after resetting RNAi in the presence or absence of piRNAs in C. elegans. Small RNAs were isolated from adult wild type and mutant or transgenic C. elegans and subjected to Illumina HiSeq sequencing. The series contains fastq and tab-separated files for 10 libraries.

ORGANISM(S): Caenorhabditis elegans

SUBMITTER: Taiowa Montgomery

PROVIDER: E-GEOD-63114 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

piRNAs and transgenerational RNA interference protect essential genes from RNA silencing in C. elegans

Project description:This data series contains small RNA high-throughput sequencing data derived from cell lysates and FLAG::HRDE-1 immunoprecipitates (IP) after resetting RNAi in the presence or absence of piRNAs in C. elegans.

2015-06-30 | GSE63114 | GEO

MUT-14 and SMUT-1 DEAD box RNA helicases have overlapping roles in germline RNAi and endogenous siRNA formation in C. elegans

Project description:This data series contains small RNA high-throughput sequencing data for each of the mutator class genes. Samples are from stage-matched adult C. elegans grown at 20˚C. Small RNAs were isolated from synchronized wild type and mutant C. elegans and subjected to Illumina HiSeq sequencing. The series contains fastq and tab-separated files for 19 libraries.

2014-01-23 | E-GEOD-54320 | biostudies-arrayexpress

P Granules Protect RNA Interference Genes from Silencing by piRNAs.

Project description: Not available

| S-EPMC6764750 | biostudies-literature

Stress Resets Transgenerational Small RNA Inheritance

Project description:Transgenerational inheritance is challenging basic concepts of heredity and achieving control over such responses is of great interest. In C. elegans nematodes, small RNAs are transmitted across generations to establish a transgenerational memory trace of ancestral environments. Inheritance of small RNAs is regulated by dedicated machinery and can be tuned by outside cues. Carryover of aberrant heritable small RNA responses was shown to be maladaptive and to induce sterility in certain cases. Here we show that various types of stress (starvation, high temperatures, and hyperosmotic conditions) but not non-stressful changes in cultivation, lead to resetting of small RNA inheritance. We found that stress leads to a genome-wide reduction in heritable small RNA levels and that mutants defective in different stress pathways exhibit irregular RNAi inheritance dynamics. Moreover, we discovered that resetting of heritable RNAi is orchestrated by MAPK pathway factors, the transcription factor SKN-1, and the MET-2 methyltransferase. Termination of small RNA inheritance, and the fact that this process depends on stress, could protect from run-on of environment-irrelevant heritable gene regulation.

2021-03-24 | GSE129988 | GEO

P granules protect RNA interference genes from silencing by piRNAs

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-07-23 | GSE134638 | GEO

Function, targets and evolution of Caenorhabditis elegans piRNAs

Project description:This SuperSeries is composed of the following subset Series: GSE28617: Function, targets and evolution of Caenorhabditis elegans piRNAs (small RNA-Seq) GSE37432: Function, targets and evolution of Caenorhabditis elegans piRNAs (mRNA) Refer to individual Series

2012-06-17 | E-GEOD-37433 | biostudies-arrayexpress

P granules protect RNA interference genes from silencing by piRNAs

Project description:P granules protect RNA interference genes from silencing by piRNAs

| PRJNA555898 | ENA

Small RNA pathways in the nematode Ascaris in the absence of piRNAs

Project description:Small RNA pathways play diverse regulatory roles in the nematode C. elegans. However, our understanding of small RNA pathways, their conservation, and their roles in other nematodes is limited. Here, we analyzed small RNA pathways in the parasitic nematode Ascaris. Ascaris has ten Argonautes with five worm-specific Argonautes (WAGOs) that are associated with secondary 5’-triphosphate small RNAs (22-24G-RNAs). These Ascaris WAGOs and their small RNAs target repetitive sequences (WAGO-1, WAGO-2, WAGO-3, and NRDE-3) or mature mRNAs (CSR-1, NRDE-3, and WAGO-3) and are similar to the C. elegans mutator, nuclear, and CSR-1 small RNA pathways. Ascaris CSR-1 likely functions to “license” gene expression in the absence of an Ascaris piRNA pathway. Ascaris ALG-4 and its associated 26G-RNAs target and appear to repress specific mRNAs during meiosis in the testes. Notably, Ascaris WAGOs (WAGO-3 and NRDE-3) small RNAs change their targets between repetitive sequences and mRNAs during spermatogenesis or in early embryos illustrating target plasticity of these WAGOs. We provide a unique and comprehensive view of mRNA and small RNA expression throughout nematode spermatogenesis that illustrates the dynamics and flexibility of small RNA pathways. Overall, our study provides key insights into the conservation and divergence of nematode small RNA pathways.

2021-12-15 | GSE189061 | GEO

Function, targets and evolution of Caenorhabditis elegans piRNAs (mRNA)

Project description:piRNAs are required to maintain germline integrity and fertility but their mechanism of action is poorly understood. Here we demonstrate that C. elegans piRNAs silence transcripts in trans through imperfectly complementary sites. We find that target silencing is independent of Piwi endonuclease activity or “slicing”. Instead, we show that piRNAs initiate a localized secondary endogenous small interfering RNA (endo-siRNA) response. Endogenous protein-coding gene, pseudogene and transposon transcripts exhibit Piwi-dependent endo-siRNAs at sites complementary to piRNAs and are derepressed in Piwi mutants. Genomic loci of piRNA biogenesis are depleted of protein-coding genes but not pseudogenes or transposons. Our data suggest that nematode piRNA clusters are evolving to generate piRNAs against active mobile elements. Thus, piRNAs provide heritable, sequence-specific triggers for RNAi in C. elegans. Affymetrix mRNA expression data from wild-type and two independent prg-1;prg-2 double mutant C. elegans strains (mRNA)

2012-06-17 | E-GEOD-37432 | biostudies-arrayexpress

MUT-14 and SMUT-1 DEAD box RNA helicases have overlapping roles in germline RNAi and endogenous siRNA formation in C. elegans

Project description:This data series contains small RNA high-throughput sequencing data for each of the mutator class genes. Samples are from stage-matched adult C. elegans grown at 20˚C.

2014-01-23 | GSE54320 | GEO

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