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RBM4 modulate apoptosis and expression of inflammatory factors via alternative splicing in HeLa cells

ABSTRACT: We overexpressed RBM4 in HeLa cells to study RBM4-regulated genes using RNA-seq technology, followed by bioinformatic analysis of target genes of RBM4-regulated transcriptional factors (TFs)

ORGANISM(S): Homo sapiens

PROVIDER: GSE134402 | GEO | 2025/07/08

REPOSITORIES: GEO

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RBM4 modulate apoptosis and expression of inflammatory factors via alternative splicing in HeLa cells

Project description:RBM4 modulate apoptosis and expression of inflammatory factors via alternative splicing in HeLa cells

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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

The splicing factor RBM4 controls apoptosis, proliferation, and migration to suppress tumor progression

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The splicing factor RBM4 controls apoptosis, proliferation, and migration to suppress tumor progression

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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.

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RBM4 regulates senescence

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RBM6 promotes tumor cell apoptosis and disrupts the alternative splicing of related genes in HeLa cells

Project description:RNA binding proteins have important functions in tumorigenesis; therefore, their regulatory mechanisms should be further explored. The present study aimed to determine the regulatory roles of RNA binding motif protein 6 (RBM6) in transcription and alternative splicing in Hela cells. RBM6 expression levels and its effect on the prognosis of different tumors in The Cancer Genome Atlas database were analyzed using TIMER2.0. Short hairpin RNA was used to ablate RBM6 expression in HeLa cells. Differentially expressed genes and alternative splicing events in Hela cells were assessed using RNA sequencing and quantitative real-time reverse transcription polymerase chain reaction. RBM6 was identified as a prognostic marker for bladder urothelial carcinoma, kidney renal clear cell carcinoma, mesothelioma, and pancreatic adenocarcinoma. Knockdown of RBM6 promoted cell proliferation. In Hela cells, RMB6 regulated the expression and alternative splicing of many genes involved in tumorigenesis_x001E_related pathways, including ‘apoptotic process’, ‘mitotic cell cycle’, and ‘RNA splicing’. RBM6-regulated alternatively spliced genes (DIABLO (Diablo IAP-binding mitochondrial protein), PAK4 (P21 (RAC1) activated kinase 4) and ERCC2 (ERCC excision repair 2, TFIIH core complex helicase subunit)) were subjected to quantitative real-time reverse transcription polymerase chain reaction validation, which demonstrated the same expression trends as the RNA sequencing results. Our findings showed that RBM6 affects tumorigenesis and cancer progression by disrupting alternative splicing in HeLa cells.

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PAR-CLIP of RBM4 and HIF-2a

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