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SRX26418798: GSM8579721: Zebrafish, RNAseq, Sibling-sphere-3; Danio rerio; RNA-Seq
1 ILLUMINA (Illumina HiSeq 2000) run: 23.7M spots, 7.1G bases, 2.1Gb downloads

External Id: GSM8579721_r1
Submitted by: Shandong University
Study: Rbm24 dictates mRNA recruitment for germ plasm assembly
show Abstracthide Abstract
Ribonucleoprotein (RNP) granules are the most common membrane-less biomolecular condensates. However, the mechanisms underlying their assembly are largely unknown. The aggregation of germ plasm determines the fate of primordial germ cells (PGCs) and serves as a model for RNP granule assembly. Here, we show that maternal RNA binding protein Rbm24a is the key factor governing specific sorting of mRNAs. Mechanistically, Rbm24a complexes with Buc and interacts to dictate the specific grasp of germ plasm mRNAs into phase-separated condensates. Germ plasm particles lacking Rbm24a and mRNAs fail to undergo kinesin-dependent transport towards the cleavage furrows where small granules fuse into large aggregates. Therefore, the loss of maternal Rbm24a causes a complete degradation of germ plasm and the disappearance of PGCs. These findings demonstrate that Rbm24a functions as a nucleating organizer of the germ plasm, highlighting an emerging mechanism for RNA-binding proteins in reading and recruiting RNA components into the phase-separated protein scaffold. Overall design: To examine the global transcriptome alterations following the loss of maternal Rbm24a, we conducted bulk RNA-seq analysis on Mrbm24a and their sibling embyos at 4-cell, sphere stage and 24 hpf.
Sample: Zebrafish, RNAseq, Sibling-sphere-3
SAMN44337411 • SRS22938429 • All experiments • All runs
Organism: Danio rerio
Library:
Name: GSM8579721
Instrument: Illumina HiSeq 2000
Strategy: RNA-Seq
Source: TRANSCRIPTOMIC
Selection: cDNA
Layout: PAIRED
Construction protocol: Total RNAs were extracted from WT and Mrbm24a embryos at 4-cell sphere 24-hpf stage, using TRIzol reagent (Invitrogen), and were precipitated by cold isopropanol (50%, v/v) in the presence of carrier glycogen (20 µg/each sample). 1 μg total RNA was used for following library preparation. The poly(A) mRNA isolation was performed using Oligo(dT) beads. The mRNA fragmentation was performed using divalent cations and high temperature. Priming was performed using Random Primers. First strand cDNA and the second-strand cDNA were synthesized. The purified double-stranded cDNA was then treated to repair both ends and add a dA-tailing in one reaction, followed by a T-A ligation to add adaptors to both ends. Size selection of Adaptor-ligated DNA was then performed using DNA Clean Beads. Each sample was then amplified by PCR using P5 and P7 primers and the PCR products were validated. Then libraries with different indexs were multiplexed and loaded on an Illumina HiSeq/ Illumina Novaseq/ MGI2000 instrument for sequencing using a 2x150 paired-end (PE) configuration according to manufacturer's instructions.
Runs: 1 run, 23.7M spots, 7.1G bases, 2.1Gb
Run# of Spots# of BasesSizePublished
SRR3103335423,673,5277.1G2.1Gb2024-10-27

ID:
35677650

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