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Post-transcriptional regulation of human endogenous retroviruses by RNA-Binding Motif Protein 4, RBM4

ABSTRACT: Post-transcriptional regulation of human endogenous retroviruses by RNA-Binding Motif Protein 4, RBM4

PROVIDER: PRJNA622495 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11465180_1.fastq.gz	Fastqsanger.gz
	SRR11465180_2.fastq.gz	Fastqsanger.gz
	SRR11465181_1.fastq.gz	Fastqsanger.gz
	SRR11465181_2.fastq.gz	Fastqsanger.gz
	SRR11465182_1.fastq.gz	Fastqsanger.gz

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Posttranscriptional regulation of human endogenous retroviruses by RNA-binding motif protein 4, RBM4.

Project description:The human genome encodes for over 1,500 RNA-binding proteins (RBPs), which coordinate regulatory events on RNA transcripts. Most studies of RBPs have concentrated on their action on host protein-encoding mRNAs, which constitute a minority of the transcriptome. A widely neglected subset of our transcriptome derives from integrated retroviral elements, termed endogenous retroviruses (ERVs), that comprise ∼8% of the human genome. Some ERVs have been shown to be transcribed under physiological and pathological conditions, suggesting that sophisticated regulatory mechanisms to coordinate and prevent their ectopic expression exist. However, it is unknown how broadly RBPs and ERV transcripts directly interact to provide a posttranscriptional layer of regulation. Here, we implemented a computational pipeline to determine the correlation of expression between individual RBPs and ERVs from single-cell or bulk RNA-sequencing data. One of our top candidates for an RBP negatively regulating ERV expression was RNA-binding motif protein 4 (RBM4). We used photoactivatable ribonucleoside-enhanced cross-linking and immunoprecipitation to demonstrate that RBM4 indeed bound ERV transcripts at CGG consensus elements. Loss of RBM4 resulted in an elevated transcript level of bound ERVs of the HERV-K and -H families, as well as increased expression of HERV-K envelope protein. We pinpointed RBM4 regulation of HERV-K to a CGG-containing element that is conserved in the LTRs of HERV-K-10, -K-11, and -K-20, and validated the functionality of this site using reporter assays. In summary, we systematically identified RBPs that may regulate ERV function and demonstrate a role for RBM4 in controlling ERV expression.

| S-EPMC7585035 | biostudies-literature

Post-transcriptional regulation of human endogenous retroviruses by RNA-Binding Motif Protein 4, RBM4

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

2020-09-03 | GSE147897 | GEO

Endogenous retroviruses promote prion-like spreading of proteopathic seeds

Project description:Prion-like spreading of protein misfolding is characteristic for neurodegenerative diseases, but the exact mechanisms of intercellular protein aggregate dissemination remain unresolved. Evidence accumulates that endogenous retroviruses, remnants of viral germline infections that are normally epigenetically silenced, become upregulated in neurodegenerative diseases such as amyotrophic lateral sclerosis and tauopathies. Here we uncover that activation of endogenous retroviruses affects prion-like spreading of proteopathic seeds. To identify changes in the proteome of donor cells that might contribute to protein aggregate spreading, we performed mass spectrometry analyses of total cell lysates and donor EV fractions using N2a cells expressing HA epitope-tagged Sup35 NM prion protein at early (P07) and late passages (P16) post cryopreservation. Among the proteins increased in donor cells and EVs upon prolonged culture, we identified mouse endogenous MLV retrovirus proteins to be highly increased.

2023-10-18 | PXD043201 | Pride

Hijacking of transcriptional condensates by endogenous retroviruses

Project description:Hijacking of transcriptional condensates by endogenous retroviruses

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H3.3 deposition at endogenous retroviruses in embryonic stem cells

Project description:We report DAXX-dependent deposition of histone H3.3 at at endogenous retroviruses in embryonic stem cells.

2015-07-16 | GSE70966 | GEO

Exon arrays from HeLa cells transfected with RBM4-specific siRNA

Project description:RBM4 is a RNA-binding protein (RBP) able to modulate splicing by promoting exon inclusion and shares an import pathway with other splicing factors in the nucleus. In earlier studies we found that RBM4 interacts and colocalizes with WT1, which has been implicated in 10M-bM-^@M-^S15% of WilmsM-bM-^@M-^Y tumours and more recently in leukemya, is considered to be a tumour suppressor. RBM4, a RBP whose splicing effect is inhibited by the +KTS isoform of the tumour-suppressor/activator WT1, exhibits altered expression in different tumours, and may be essential for proliferation. Moreover, RBM4 binds to a number of RNAs of genes involved in acute myeloid leukaemia and cell cycle control. These results suggest that RBM4 may be involved in alternative splicing, tumorigenesis and particularly leukaemogenesis. To determine the endogenous transcripts that are targeted by RBM4 at the genome-wide level, we decided to perform exon microarray studies. RBM4-specific siRNA has been used for knockdown of RBM4 in HeLa cells. RNA was extracted using a Qiagen RNA extraction kit from untransfected, mock and siRNA-transfected HeLa cells and quality of RNA for microarray analysis was checked using a Bioanalyzer 2100 (Agilent Technologies). Experiments were run in triplicates.

2012-07-14 | E-GEOD-32933 | biostudies-arrayexpress

TRIM28 silences endogenous retroviruses in neural progenitor cells

Project description:Here we show that in neural progenitor cells (NPCs) TRIM28 silences transcription of two groups of endogenous retroviruses (ERVs): IAP1 and MMERVK10C. Derepression of ERVs in Trim28-deficient NPCs was associated with a loss of H3K9me3 and resulted in transcriptional upregulation and reverse transcription. These findings demonstrate a unique dynamic transcriptional regulation of ERVs in NPCs. Analysis of upregulation of ERVs in Trim28-deficient NPCs

2015-01-07 | E-GEOD-45930 | biostudies-arrayexpress

Exon arrays from HeLa cells transfected with RBM4-specific siRNA

Project description:RBM4 is a RNA-binding protein (RBP) able to modulate splicing by promoting exon inclusion and shares an import pathway with other splicing factors in the nucleus. In earlier studies we found that RBM4 interacts and colocalizes with WT1, which has been implicated in 10–15% of Wilms’ tumours and more recently in leukemya, is considered to be a tumour suppressor. RBM4, a RBP whose splicing effect is inhibited by the +KTS isoform of the tumour-suppressor/activator WT1, exhibits altered expression in different tumours, and may be essential for proliferation. Moreover, RBM4 binds to a number of RNAs of genes involved in acute myeloid leukaemia and cell cycle control. These results suggest that RBM4 may be involved in alternative splicing, tumorigenesis and particularly leukaemogenesis. To determine the endogenous transcripts that are targeted by RBM4 at the genome-wide level, we decided to perform exon microarray studies.

2012-07-15 | GSE32933 | GEO

RBM4 regulates senescence

Project description:RNA-seq was performed on A549 and H1299 cells that stably knocking down RBM4 or control, in order to profile the gene expression change that were regulated by RBM4

2023-02-01 | GSE111051 | GEO

PAR-CLIP of RBM4 and HIF-2a

Project description:To identify which mRNAs bind to RBM4/HIF-2a Two PAR-CLIPs were performed: One of an RBM4 immunoprecipitation, and the other of a HIF-2a immunoprecipitation and excising the associated RBM4 band.

2012-05-06 | E-GEOD-36247 | biostudies-arrayexpress

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