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Son KD in mouse embryonic stem cells

ABSTRACT: Gene-expression noise can influence cell-fate choices across pathology and physiology. However, a crucial question persists: do regulatory proteins or pathways exist that control noise independently of mean expression levels? Resulting from a previous screen, the protein SON was identified as a potential noise regulator. We perform Son KD and utilize single-cell RNA sequencing (scRNA-seq) to quantify the changes in mean/noise of all transcripts. This dataset corresponds to the aforementioned scRNA-seq experiment upon Son KD.

ORGANISM(S): Mus musculus

PROVIDER: GSE270846 | GEO | 2024/08/05

REPOSITORIES: GEO

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Total RNA-seq and long-read RNAseq (Nanopore) upon Son KD in mouse embryonic stem cells

Project description:Gene-expression noise can influence cell-fate choices across pathology and physiology. However, a crucial question persists: do regulatory proteins or pathways exist that control noise independently of mean expression levels? Resulting from a previous screen, the protein SON was identified as a potential noise regulator. We perform Son KD and utilize (1) total RNA sequencing (RNA-seq) to analyze differences in splicing efficiency of introns upon Son KD; and (2) Nanopore sequencing to analyze changes in isoform usage. These datasets correspond to the aforementioned total RNA-seq and long-read polyA+ cDNA Nanopore sequencing upon Son KD.

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Son KD in mouse embryonic stem cells

Project description:Son KD in mouse embryonic stem cells

| PRJNA1128624 | ENA

Son Maintains Accurate Splicing of Pre-mRNAs Encoding Chromatin Modifiers

Project description:Exon and expression analysis of HeLa cells after knockdown of SON Serine-arginine-rich (SR) proteins play a key role in alternative pre-mRNA splicing in eukaryotes. Our laboratory recently showed that a large SR protein called Son has unique repeat motifs that are essential for maintaining the subnuclear organization of pre-mRNA processing factors in nuclear speckles. Motif analysis of Son highlights putative RNA interaction domains that suggest a direct role for Son in pre-mRNA splicing. A genome-wide screen was performed to identify putative human transcription and splicing targets of Son.

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Expression data from HeLa cells transiently transfected with control siRNA or SON siRNA

Project description:SON is a large Ser/Arg (SR)-related protein localized in nuclear speckles. SON siRNA causes defects in mitotic progression and genome instability. We used microarrays to detail the pattern of gene expression after SON knockdown.

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RNA-Seq after knockdown of SON in human embryonic stem cells

Project description:Human embryonic stem cells (hESCs) harbor the ability to undergo lineage-specific differentiation into clinically relevant cell types. Transcription factors and epigenetic modifiers are known to play important roles in the maintenance of pluripotency of hESCs. However, little is known about regulation of pluripotency through splicing. In this study, we identify the spliceosome-associated factor SON as a novel factor essential for the maintenance of hESCs. Depletion of SON in hESCs results in the loss of pluripotency and cell death. Using genome-wide RNA profiling, we identified transcripts that are regulated by SON. Importantly, we confirmed that SON regulates the proper splicing of transcripts encoding for pluripotency regulators such as PRDM14, OCT4, E4F1 and MED24. Furthermore, we show that SON is bound to these transcripts in vivo. In summary, we connect a splicing-regulatory network for accurate transcription production to the maintenance of pluripotency and self-renewal of hESCs.

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