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Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [small RNA]

ABSTRACT: Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [small RNA]

PROVIDER: PRJNA421016 | ENA |

REPOSITORIES: ENA

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Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells

Project description:Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells

| PRJNA315403 | ENA

Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [small RNA]

Project description:Germ plasm, the Balbiani body and nuage are evolutionary conserved structures essential for germ cell specification and maintenance. We describe Tdrd6a as a component of these structures with two distinct molecular functions. First, Tdrd6a facilitates the accumulation of the typical antisense-bias of piRNAs, without having effects on piRNA biogenesis signatures. Second, we show that Tdrd6a is required for Balbiani body and germ plasm integrity, and associates with RNA-binding proteins and germ plasm mRNAs. On the cell-biological level, maternally contributed Tdrd6a strongly impacts germ cell formation, but is dispensable for fertility. Using single-cell RNA-sequencing we demonstrate that Tdrd6a promotes early germ cell development and regulates the stoichiometry of germ plasm mRNAs. We propose that Tdrd6a functions as a scaffold to recruit correct ratios of germ plasm transcripts and to accumulate antisense piRNA complexes in order to ensure both specification and maintenance of germ cells.

2018-07-24 | GSE107682 | GEO

Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [scRNA-Seq]

2018-07-24 | GSE79283 | GEO

Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [RIP-Seq]

2018-07-24 | GSE79161 | GEO

Danio rerio

Project description:Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [scRNA-Seq]

| PRJNA315399 | ENA

Danio rerio

Project description:Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells [RIP-Seq]

| PRJNA315400 | ENA

Modulation of Aub–Tdrd interactions elucidates piRNA amplification and germ plasm formation

Project description:Aub protein guided by piRNAs ensures genome integrity by cleaving retrotransposons and genome propagation by trapping mRNAs to form the germ plasm that instructs germ cell formation. The amino terminus of Aub (Aub-NT) is rich in arginines (Aub-NTRs), which are symmetrically dimethylated (sDMAs), and interacts with Tudor protein and other Tudor domain containing proteins (Tdrds). Aub-Tdrd interactions play critical roles in suppressing active retrotransposons via piRNA amplification and in germ plasm formation via generation of Aub-Tudor ribonucleoproteins. Here we show that Aub-NTRs are dispensable for primary piRNA biogenesis but essential for piRNA amplification and transposon control and that sDMAs in Aub-NT are essential for germ plasm formation and germ cell specification, but largely dispensable for piRNA amplification and transposon control.

2020-12-14 | GSE155874 | GEO

Tdrd6a recruits Ziwi-bound piRNAs and coordinates deposition of germ plasm mRNAs into primordial germ cells

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

2018-07-24 | GSE79285 | GEO

ATAC-seq of zebrafish primordial germ cells and somatic cells during early embryogenesis

Project description:Zebrafish Primordial Germ Cells (PGCs) were tracked in the Tg(Buc-GFP) line where the germ plasm protein Buc is fused to GFP. GFP-positive cells were isolated via FACS and RNA-seq was performed on polyadenylated transcripts for PGCs and somatic cells at 256-cell, high, dome, 10 somites and prim-5 stages. Two hundred cells were used for each biological replicate.

2020-12-24 | E-MTAB-8741 | biostudies-arrayexpress

The Xenopus Primordial Germ Cell Transcriptome: Unexpected Role for sox7 in Early PGC Development

Project description:Xenopus primordial germ cells (PGCs) are determined by the presence of maternally derived germ plasm. Germ plasm components both protect PGCs from somatic differentiation and begin a unique gene expression program. Segregation of the germline from the endodermal lineage occurs during gastrulation and PGCs subsequently initiate zygotic transcription. However, the gene-networks that operate to both preserve the potential for totipotency and promote germline differentiation are poorly understood. Here, we utilized RNA-sequencing analysis to comprehensively interrogate PGC and neighboring endoderm cell RNAs after lineage segregation. We identified 1,865 transcripts enriched in PGCs compared to endoderm cells. Over 50% of maternal, vegetally-enriched transcripts were enriched in the PGC transcriptome, including sox7. PGC-directed sox7 knockdown and over-expression studies revealed an early requirement for sox7 in proper germ plasm localization, zygotic transcription, and PGC number. We identified oct60 as the most highly expressed and enriched OCT3/4 homologue in PGCs. Lastly, we compared the Xenopus PGC transcriptome with human PGC transcripts and showed that 80% of transcripts are conserved, identifying Xenopus as a relevant model system for understanding the gene-networks necessary for human germline development.

2017-08-01 | GSE102047 | GEO

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