GEO DataSets

(Submitter supplied) We deep-sequenced small RNAs after immunoprecipitation of Mili or Miwi, as well as total small RNA from adult mouse testis. The goal of this experiment is to more deeply characterize the piRNA pool from adult mouse testes, using the Illumina platform.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9250

3 Samples

Download data

(Submitter supplied) We examined in Xenopus tropicalis eggs piRNAs that are associated with Y12 antibody, which binds symmetrically methylated arginines that are present on diverse Piwi proteins. The goal of this experiment is to more deeply characterize the piRNA pool from adult Xenopus extracts, using the Illumina platform.

Organism:

Xenopus tropicalis

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9320

1 Sample

Download data

(Submitter supplied) Piwi-interacting RNAs (piRNAs) are ~24-30 nucleotide regulatory RNAs that are abundantly expressed in gonads. The most well-understood piRNAs mediate post-transcriptional defense against transposable elements (TEs), and derive from sense or antisense strands as a consequence of "ping-pong" amplification of complementary sequences of active TEs and piRNA master control transcripts. Another class of piRNAs, such as those expressed in pachytene testis, derive from large intergenic clusters that are strictly single-stranded. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by array; Non-coding RNA profiling by array

Platform:

GPL1322

3 Samples

Download data: CEL

(Submitter supplied) High-throughput sequencing of Drosophila melanogaster small RNAs from OSS cells. total RNA, ~18-26nt RNAs isolated using PAGE, ligation to adapters requires 5' monophosphate and 3' OH For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

4 Samples

Download data

(Submitter supplied) Small RNAs were deep sequenced from the liver and spleen of adult mice in an effort to identify somatic piRNAs. Following sequencing of all small RNAs, known non-coding RNAs were computationally removed from the dataset. The remaining RNAs were then mapped to the genome and analyzed for sequence characteristics (5' base, length) typical of known piRNAs. To determine if any of the identified small RNAs were MIWI2 dependent, we deep sequenced small RNAs from liver and spleen of MIWI2 KO mice and analyzed them as above.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

4 Samples

Download data: BED, TXT

(Submitter supplied) piRNAs function in silencing retrotransposons by associating with the PIWI proteins, AGO3, Aub, and Piwi, in Drosophila germlines. Bioinformatics analyses of piRNAs in Drosophila ovaries suggested that piRNAs are produced by two systems, the primary processing pathway and the amplification loop, from repetitive genes and piRNA clusters in the genome. The amplification loop occurs in a Dicer-independent, PIWI-Slicer-dependent manner. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9333

1 Sample

Download data

(Submitter supplied) The piRNA pathway is studied in great detail in Drosophila female germline. In this study we show that unlike the female germline where all Piwi proteins are expressed throughout oogenesis, Ago3 - a Piwi family protein shows a spatial expression male germline. To understand dynamics of piRNA pathway during spermatogonia and primary spermatocyte stages of male germline development, we used arrest mutants. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13304

9 Samples

Download data: XLSX

(Submitter supplied) Murine Adult Stomach Small RNA

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL16331

2 Samples

Download data: TXT

(Submitter supplied) This study annotates the NGS reads in ICC and Sm Int sncRNA libraries. In addition to known sncRNAs, we identified numerous somatic piRNA-like RNAs. This study confirms the expression of pilRNAs in somatic tissues and outlines their major characteristics.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9522

2 Samples

Download data: GFF

(Submitter supplied) This study annotates the NGS reads in a Sertoli cell sncRNA library. In addition to known sncRNAs, we also identified numerous novel sncRNAs expressed by Sertoli cells. Our data suggest that the Sertoli cell sncRNA transcriptome predominantly consists of miRNAs, piRNA-like RNAs, tRNAs and snoRNAs. This study reports the first comprehensive annotation of the Sertoli cell sncRNA transcriptome.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9522

1 Sample

Download data: GFF

(Submitter supplied) The piRNA machinery is known for its role in mediating epigenetic silencing of transposons. Recent studies suggest that this function also involves piRNA-guided cleavage of transposon-derived transcripts. As many piRNAs also appear to have the capacity to target diverse mRNAs, this raises the intriguing possibility that piRNAs may act extensively as siRNAs to degrade specific mRNAs. To directly test this hypothesis, we compared mouse PIWI (MIWI)-associated piRNAs with experimentally identified cleaved mRNA fragments from mouse testes, and observed cleavage sites that predominantly occur at position 10 from the 5' end of putative targeting piRNAs. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL9185

2 Samples

Download data: FA

(Submitter supplied) This study examines the population of transcripts associated with the Xenopus Piwi proteins, Xiwi and Xili, from X.laevis and X.tropicalis. RIP-seq, CLIP-seq, piRNA-seq, and mRNA-seq datasets were integrated to determine how the Xenopus Piwi proteins where using piRNAs and binding interactions to associate with transcripts in gonadal cells.

Organism:

Xenopus laevis; Xenopus tropicalis

Type:

Expression profiling by high throughput sequencing; Other; Non-coding RNA profiling by high throughput sequencing

Platforms:

GPL15472 GPL17682

11 Samples

Download data: TXT

(Submitter supplied) PIWI proteins and their associated piRNAs protect germ cells from the activity of mobile genetic elements. Two classes of piRNAs—primary and secondary—are defined by their mechanisms of biogenesis. Primary piRNAs are processed directly from transcripts of piRNA cluster loci, whereas secondary piRNAs are generated in an adaptive amplification loop, termed the ping-pong cycle. In mammals, piRNA populations are dynamic, shifting as male germ cells develop. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing; Other

Platforms:

GPL16417 GPL9250 GPL13112

38 Samples

Download data: TXT

(Submitter supplied) PIWI proteins and their associated piRNAs protect germ cells from the activity of mobile genetic elements. Two classes of piRNAs—primary and secondary—are defined by their mechanisms of biogenesis. Primary piRNAs are processed directly from transcripts of piRNA cluster loci, whereas secondary piRNAs are generated in an adaptive amplification loop, termed the ping-pong cycle. In mammals, piRNA populations are dynamic, shifting as male germ cells develop. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL16417 GPL9250

6 Samples

Download data: TXT

(Submitter supplied) In germ cells, Piwi proteins interact with a specific class of small non-coding RNAs, piwi-interacting RNAs (piRNAs). Together, these form a pathway that represses transposable elements, thus safeguarding germ cell genomes. While basic models describe the operation of piRNA pathways, neither the protein compositions of Piwi complexes, the critical protein-protein interactions that drive small RNA production and target recognition, or the precise molecular consequences of conserved localization to germline structures, call nuage, is well understood. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9185

8 Samples

Download data: TXT

(Submitter supplied) In order to monitor the changes in small RNAs expression during mouse spermatogenesis. Type A spermatogonia, pachytene spermatocytes and round spermatids were isolated following collagenase treatment of testes and trypsin digestion of isolated seminiferous tubules using unit gravity sedimentation in a bovine serum albumin gradient. The small RNA fraction (18-36nt) was cloned and sequenced from total RNA of each cell type.

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9185

3 Samples

Download data

(Submitter supplied) 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 biogenesis of secondary piRNAs depends on piRNA-guided transcript cleavage and results in piRNA amplification. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13304

46 Samples

Download data: BW, TXT

(Submitter supplied) The eukaryotic genome has vast intergenic regions containing transposons, pseudogenes and other repetitive sequences. They produce numerous long non-coding RNAs (lncRNAs) and PIWI-interacting RNAs (piRNAs), yet the functions of the vast intergenic regions remain largely unknown. Mammalian piRNAs are abundantly expressed in late spermatocytes and round spermatids. Their expression coincides with the widespread expression of lncRNAs from the genome of these cells. more...

Organism:

Mus musculus

Type:

Other

Platform:

GPL13112

12 Samples

Download data: TXT

(Submitter supplied) In animal germline cells, Piwi-interacting RNAs (piRNAs) silence retrotransposons through post-transcriptional and transcriptional mechanisms. However, little is known, especially in mammals, about the functions of piRNAs beyond retrotransposon suppression1-5. In mammalian spermatocytes, piRNAs are known to be abundantly expressed6-10. Here, we show that a subset of coding and noncoding RNAs in mouse spermatocytes is degraded by the piRNA pathway. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

6 Samples

Download data: TXT

(Submitter supplied) In animal germline cells, Piwi-interacting RNAs (piRNAs) silence retrotransposons through post-transcriptional and transcriptional mechanisms. However, little is known, especially in mammals, about the functions of piRNAs beyond retrotransposon suppression1-5. In mammalian spermatocytes, piRNAs are known to be abundantly expressed6-10. Here, we show that a subset of coding and noncoding RNAs in mouse spermatocytes is degraded by the piRNA pathway. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing; Other

Platform:

GPL13112

44 Samples

Download data: TXT