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ProteomicsThe ribonuclease DISL-2 mediates piRNA degradation
The PIWI/piRNA pathway acts as a conserved RNA-directed immune mechanism that suppresses transposons and promotes fertility. The biogenesis of piRNAs has been extensively investigated since their discovery, yet the mechanisms governing piRNA degradation remain poorly understood. Here, we systematica...
ORGANISM(S): Caenorhabditis elegans 
2025-09-07 | PXD060979 | Pride
Pirna degradation Ribonuclease Piwi 
TranscriptomicsConserved generation of short products at piRNA loci
We analyzed small RNAs from three mammalian species, and found that in all these species piRNA-directed targeting is accompanied by the generation of short sequences that have a very precisely defined length and a specific spatial relationship with the guide piRNAs. small RNA-seq of testes lysate (b...
ORGANISM(S): Mus musculus 
2011-03-07 | E-GEOD-26160 | biostudies-arrayexpress
TranscriptomicspiRNA-guided slicing of transposon transcripts enforces their transcriptional silencing via specifying the nuclear piRNA repertoire
PIWI-clade Argonaute proteins silence transposon expression in animal gonads. Their target specificity is defined by bound ~23-30nt piRNAs that are processed from single-stranded precursor transcripts via two distinct pathways. Primary piRNAs are defined by the endo-nuclease Zucchini, while biogenes...
ORGANISM(S): Drosophila melanogaster 
2015-08-31 | E-GEOD-71775 | biostudies-arrayexpress
TranscriptomicsAnalysis of small RNAs in piRNA pathway mutant mouse testes
Piwi-interacting RNAs are 25-32 nt small RNAs bound to Piwi proteins. To know the steps where factors involved in the piRNA biogenesis (MILI, MIWI2, ZUC (MitoPLD), MVH) work, we sequenced small RNAs from mutant mouse testes and analyzed piRNAs. Examination of small RNAs in testes of mutant mouse
ORGANISM(S): Mus musculus 
2010-05-27 | E-GEOD-20327 | biostudies-arrayexpress
TranscriptomicsA role for Fkbp6 and the chaperone machinery in piRNA amplification and transposon silencing
Epigenetic silencing of transposons by Piwi-interacting RNAs (piRNAs) constitutes an RNA-based genome defense mechanism. Piwi endonuclease action amplifies the piRNA pool by generating new piRNAs from target transcripts by a poorly understood mechanism. Here, we identified mouse Fkbp6 as a factor in...
ORGANISM(S): Bombyx mori 
2012-09-04 | E-GEOD-39203 | biostudies-arrayexpress
TranscriptomicsThe genetic framework of the Drosophila piRNA pathway
The animal piRNA pathway is a small RNA silencing system that acts in gonads and protects the genome against the deleterious influence of transposons. A major bottleneck in the field is the lack of comprehensive knowledge of the factors and molecular processes that constitute this pathway. We conduc...
ORGANISM(S): Drosophila melanogaster 
2013-05-10 | E-GEOD-45894 | biostudies-arrayexpress
GenomicsThe ribonuclease DISL-2 mediates piRNA degradation in C. elegans
The ribonuclease DISL-2 mediates piRNA degradation in C. elegans
PRJNA1225186 | ENA
TranscriptomicsRicochet transcription of pachytene piRNA promoters in mammals
The origin and stability of germline noncoding RNAs remain largely uncharacterized in mammals. Here, we demonstrate that the vast majority of pachytene piRNAs originate from less than 100 bi- and unidirectionally transcribed loci in the mouse genome. These loci show features characteristic of trans...
ORGANISM(S): Mus musculus 
2015-09-01 | E-MTAB-1265 | biostudies-arrayexpress
TranscriptomicsThe Rhino-Deadlock-Cutoff complex licenses non-canonical transcription of dual-strand piRNA clusters in Drosophila
Argonaute proteins of the PIWI clade are central to transposon silencing in animal gonads. Their target specificity is defined by 22-30nt PIWI interacting RNAs (piRNAs), which mostly originate from discrete genomic loci termed piRNA clusters. Here we show that the RDC complex composed of Rhino, Dead...
ORGANISM(S): Drosophila melanogaster 
2014-06-08 | E-GEOD-55824 | biostudies-arrayexpress
TranscriptomicsCharacterization of the piRNA Complex from Rat Testes
This data series contains the sequences and read counts of Piwi-interacting RNAs and other small RNAs from mouse and rat testes extracts. In a search for different classes of small RNAs that might be involved in transcriptional gene silencing, we encountered a novel class of small RNAs within mamma...
ORGANISM(S): Mus musculus 
2006-07-02 | E-GEOD-5026 | biostudies-arrayexpress
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