GEO DataSets

(Submitter supplied) Small RNAs have important functions. However, small RNAs in primate oocytes remain unexplored. Herein, we develop CAS-seq, a single-cell small RNA sequencing method, and profiled the small RNAs in human oocytes and embryos. We discover a class of ~20-nt small RNAs that are predominantly expressed in human and monkey oocytes, but not in mouse oocytes. They are specifically associated with HIWI3 (PIWIL3), whereas significantly shorter than the commonly known PIWI-interacting RNAs (piRNAs), designated as oocyte short piRNAs (os-piRNAs). more...

Organism:

Homo sapiens; Mus musculus; Macaca fascicularis

Type:

Non-coding RNA profiling by high throughput sequencing

7 related Platforms

111 Samples

Download data: TXT

(Submitter supplied) Germ cells of most animals critically depend on piRNAs and Piwi proteins. Surprisingly, piRNAs in mouse oocytes are relatively rare and dispensable. We present compelling evidence for strong Piwi-piRNA expression in oocytes of other mammals. Human fetal oocytes express PIWIL2 and transposon-enriched piRNAs. Oocytes in adult human ovary express PIWIL1 and PIWIL2, while those in bovine ovary just express PIWIL1. more...

Organism:

Bos taurus; Macaca fascicularis; Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing

Platforms:

GPL19647 GPL15520 GPL19646

41 Samples

Download data: FASTA

(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) We found piRNAs with different lengths represented the predominant small RNA species in oocytes from the 12 explored species, except mouse. We found endo-siRNAs resulted from the truncated Dicer isoform were mouse-specific, and os-piRNAs associating with PIWIL3 in human oocytes are widespread in mammals and are typically with low levels of the 2’-3’-O-methylation. The sequences of many highly expressed piRNA clusters are fast-evolving compared with their syntenic genomic locations, and the TE families distributing in the conserved piRNA clusters are various between species.

Organism:

Canis lupus familiaris

Type:

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

Platform:

GPL25760

8 Samples

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(Submitter supplied) We found piRNAs with different lengths represented the predominant small RNA species in oocytes from the 12 explored species, except mouse. We found endo-siRNAs resulted from the truncated Dicer isoform were mouse-specific, and os-piRNAs associating with PIWIL3 in human oocytes are widespread in mammals and are typically with low levels of the 2’-3’-O-methylation. The sequences of many highly expressed piRNA clusters are fast-evolving compared with their syntenic genomic locations, and the TE families distributing in the conserved piRNA clusters are various between species.

Organism:

Danio rerio; Homo sapiens; Canis lupus familiaris; Sus scrofa domesticus; Macaca fascicularis; Oryctolagus cuniculus; Cricetulus griseus; Mesocricetus auratus; Mus musculus; Capra hircus; Rattus norvegicus; Cavia porcellus

Type:

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

12 related Platforms

138 Samples

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(Submitter supplied) Small RNAs mediate gene silencing by binding Argonaute/Piwi proteins to regulate target RNAs. Here we describe small RNA profiling of the adult testes of Callithrix jacchus, the common marmoset. The most abundant class of small RNAs in the adult testis was piRNAs, while 353 novel miRNAs but few endo-siRNAs were also identified. MARWI, a marmoset homolog of mouse MIWI and a very abundant PIWI in adult testes, associates with piRNAs that show characteristics of mouse pachytene piRNAs. more...

Organism:

Callithrix jacchus

Type:

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

Platforms:

GPL18020 GPL17712

3 Samples

Download data: TXT

(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) Many animals have a conserved adaptive genome defense system known as the Piwi-interacting RNA (piRNA) pathway which is essential for germ cell development and function. Disruption of individual mouse Piwi genes results in male but not female sterility, leading to the assumption that PIWI genes do not play a role in mammalian oocytes. Contrary to this, PIWIL1- and PIWIL3-defective golden hamsters we have produced show defects in production of functional oocytes. more...

Organism:

Mesocricetus auratus

Type:

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

Platforms:

GPL28997 GPL29575

36 Samples

Download data: CSV, TSV, TXT

(Submitter supplied) PIWI-interacting RNAs (piRNAs) function in the nucleus and cytoplasm of animal germ cells to suppress mobile genetic elements. In the mouse male germline, biogenesis of MIWI2-bound nuclear piRNAs depends on endonuclease activity of cytosolic MILI, but the process is poorly understood. Here we use a mouse model expressing an artificial piRNA precursor to show that MILI slicing of the precursor generates a 16-nt by-product and a pre-piRNA intermediate that requires 3ʹ end processing to mature as a new piRNA. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL13112

40 Samples

Download data: CSV, TXT

(Submitter supplied) small RNA libraries from wild-type and Hen1 mutant testes were made with either polyA tailing (VASAGFPHen1minus/plus) or adapter ligation (Hen1Testis and WTTestis) and sequenced on an Illumina GAII platform.

Organism:

Danio rerio

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9319

4 Samples

Download data

(Submitter supplied) Piwi-interacting RNAs (piRNAs) are small RNAs predominantly expressed in germ cells that function in gametogenesis in various species. Notably, PIWI-deficient female mice are fertile and mouse oocytes express a panel of small RNAs that do not appear widely representative of mammals. Thus, the function of piRNAs in mammalian oogenesis remains largely elusive. Here, we generated PIWIL1- and MOV10L1-deficient golden hamsters and found that all female and male mutants were sterile, with severe defects in embryogenesis and spermatogenesis, respectively. more...

Organism:

Mesocricetus auratus

Type:

Other; Non-coding RNA profiling by high throughput sequencing

Platform:

GPL28882

128 Samples

Download data: TXT

(Submitter supplied) Small RNAs are now known to be major regulatory factors of gene expression. Emerging methods based on deep-sequencing have enabled the analysis of small RNA expression in a high-throughput manner, leading to the identification of large numbers of small RNAs in various species. Moreover, profiling small RNA data together with transcriptome data enables transcriptional and post-transcriptional regulation mediated by small RNAs to be hypothesized. more...

Organism:

Mus musculus

Type:

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

Platforms:

GPL16417 GPL17021

4 Samples

Download data: TXT

(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) Analysis of Piwi-piRNAs that assocaite with wild type Piwi and specificity loop (SL) mutants in ovarian somatic sheath cells (OSC) and Droosphila ovaries.

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL17275

39 Samples

Download data: XLSX

(Submitter supplied) Piwi-interacting RNAs (piRNAs) guide Piwi Argonautes to suppress transposon activity in animal gonads. Known piRNA populations are extremely complex, with millions of individual sequences present in a single organism. Despite this complexity, specific Piwi proteins incorporate piRNAs with distinct nucleotide- and transposon strand-biases (antisense or sense) of unknown origin. Here we examined the contribution of structural domains in Piwi proteins towards defining these biases. more...

Organism:

Bombyx mori

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL16216

7 Samples

Download data: FASTA, TXT

(Submitter supplied) Various small RNA libraries from purified microtubules or Xiwi immunoprecipitates or total extract from X.tropicalis or X.laevis egg extract. Various small RNA libraries from single X.tropicalis eggs. Analysis of this series of files is described in the manuscript "Systematic and single cell analysis of Xenopus Piwi-interacting RNAs and Xiwi".

Organism:

Xenopus laevis; Xenopus tropicalis

Type:

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

4 related Platforms

11 Samples

Download data: FA

(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