Effect of overexpression of ESRP1 on gene expression of SGC7901 gastric cancer cells
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE233685 | GEO | 2023/12/27
REPOSITORIES: GEO
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Project description:RNA-binding proteins and their mediated alternative splicing play important roles in tumor cell invasion and migration. Here, we report that ESRP1 is a key regulator of gastric cancer cell metastasis. Overexpression of ESRP1 inhibits the invasion and migration of gastric cancer cells, in vivo and in vitro. Through crosslinking-immunoprecipitation and high-throughput sequencing (CLIP seq), we revealed that ESRP1 binding to the CLSTN1 mRNA and mediated its exon skipping, which may be a key mechanism for its inhibition of gastric cancer cell invasion and metastasis. Taken together, our data provide a molecular framework for the role of ESRP1 in gastric cancer development.
2023-12-27 | GSE233931 | GEO
Project description:ESRP1 is an epithelial-specific splicing factor. It mainly regulates expressions of genes related to intercellular adhesion, actin cytoskeleton, cell polarity and cell migration at the post-transcriptional level by alternative splicing. It also plays an important role in the development and progression of cancers. This study analyzed the transcriptome changes of ESRP1 stably overexpression SKOV3 cells by high-throughput sequencing, discovered and validated the functional effects of ESRP1 on ovarian cancer cells
2020-05-21 | GSE133841 | GEO
Project description:The epithelial-mesenchymal transition (EMT) is a fundamental developmental process that is abnormally activated in cancer metastasis. Dynamic changes in alternative splicing occur during EMT. ESRP1 and hnRNPM are splicing regulators that promote an epithelial splicing program and a mesenchymal splicing program, respectively. The functional relationships between these splicing factors in the genome-scale remain elusive. Comparing alternative splicing targets of hnRNPM and ESRP1 revealed that they co-regulate a set of cassette exon events, with the majority showing discordant splicing regulation. hnRNPM discordantly regulated splicing events show a positive correlation with splicing during EMT while concordant splicing events do not, highlighting the antagonistic role of hnRNPM and ESRP1 during EMT. Motif enrichment analysis near co-regulated exons identifies guanine-uridine rich motifs downstream of hnRNPM-repressed and ESRP1-enhanced exons, supporting a model of competitive binding to these cis-elements to antagonize alternative splicing. The set of co-regulated exons are enriched in genes associated with cell-migration and cytoskeletal reorganization, which are pathways associated with EMT. Splicing levels of co-regulated exons are associated with breast cancer patient survival and correlate with gene sets involved in EMT and breast cancer subtypes. In conclusion, hnRNPM and ESRP1 co-regulate antagonistically a set of alternative splicing events that occur during EMT. This regulation is likely mediated through competition for the same intronic binding sites downstream of variable exons. hnRNPM and ESRP1 regulated splicing events are associated with breast cancer survival.
2018-08-01 | GSE112516 | GEO
Project description:Pnn depletion in developing mouse corneal epithelium led to disrupted alternative splicing of multiple ESRP-regulated epithelial-type exons. In human corneal epithelial cells (HCET), ESRP1 and PNN displayed close localization in and around nuclear speckles and their physical association in protein complexes was identified. In this study, gene expression profiling was performed to identify PNN- and ESRP1-regulated alternative pre-mRNA splicing in human corneal epithelial cells. Immortalized human corneal epithelial cells harboring doxycycline-inducible shRNA against PNN or ESRP1 were created. Whole transcriptome array analysis on ESRP1 or PNN knockdown HCET cells revealed clear alterations in transcript level and splicing pattern of specific subsets of genes with significant overlaps in their candidate targets. Our data suggest that ESRP1 and PNN modulate alternative splicing of a specific subset of exons, but not general splicing events. ESRP1 and PNN may together participate in the regulation of epithelial-specific splicing program in a genome-wide fashion. Parental HCET, shRNA-PNN HCET, and shRNA-ESRP1 HCET cells were cultured for 3 days with/without doxycycline. Total RNA was isolated from four biological replicates of each sample group and then subjected to hGlue3_0 transcriptome array analysis.
2013-01-24 | E-GEOD-41996 | biostudies-arrayexpress
Project description:Epithelial Splicing Regulatory Proteins 1 and 2 (ESRP1 and ESRP2) are recently discovered epithelial-specific RNA-binding proteins that promote splicing of the epithelial variant of the FGFR2, ENAH, CD44, and CTNND1 transcripts. To catalogue a larger set of splicing events under the regulation of the ESRPs, we profiled splicing changes induced by RNA interference-mediated knockdown of ESRP1 and ESRP2 expression in a human epithelial cell line using the splicing-sensitive Affymetrix Exon ST1.0 Arrays. Analysis of the microarray data using the previously described MADS tool resulted in the identification of over a hundred candidate ESRP-regulated splicing events. We were able to independently validate 37 of these targets by RT-PCR. The ESRP-regulated events encompass all known types of alternative splicing events. Importantly, a number of these regulated splicing events occur in gene transcripts that encode proteins with well-described roles in the regulation of actin cytoskeleton organization, cell-cell adhesion, cell polarity, and cell migration. In sum, this work reveals a novel list of transcripts differentially spliced in epithelial and mesenchymal cells, implying that coordinated alternative splicing plays a critical role in determination of cell type identity. Keywords: control / knockdown comparison Short interfering knockdown of ESRP1 and ESRP2 in human PNT2 prostatic epithelium cells was performed as described before (Warzecha et al., 2009, Molecular Cell 33:591-601). The efficiency of ESRP1 and ESRP2 knockdown was monitored by quantitative RT-PCR as described before (Warzecha et al., 2009, Molecular Cell 33:591-601). In all cases the efficiency of the knockdown was close to 80%. We conducted Exon array profiling on RNAs from four siESRP1/2-treated samples and four siGFP controls.
2010-08-18 | E-GEOD-17468 | biostudies-arrayexpress
Project description:The epithelial splicing regulatory proteins, ESRP1 and ESRP2 are essential for mammalian development through regulation of a global program of alternative splicing of genes involved in maintenance of epithelial cell function. To further inform our understanding of the molecular functions of ESRP1 we performed enhanced crosslinking immunoprecipitation coupled with high throughput sequencing (eCLIP) in epithelial cells of mouse epidermis. The genome-wide binding sites of ESRP1 were integrated with RNA-Seq analysis of alterations in splicing and total gene expression that result from epidermal ablation of Esrp1 and Esrp2. These studies demonstrated that ESRP1 functions in splicing regulation occur primarily through direct binding in a position-dependent manner to either promote exon inclusion or skipping. In addition, we also identified widespread binding of ESRP1 in 3’ and 5’ untranslated regions (UTRs) of genes involved in epithelial cell function, suggesting that its post-transcriptional functions extend beyond splicing regulation.
2022-09-12 | GSE212304 | GEO
Project description:Effect of overexpression of ESRP1 on gene expression of SGC7901 gastric cancer cells
| PRJNA977602 | ENA
Project description:Pnn depletion in developing mouse corneal epithelium led to disrupted alternative splicing of multiple ESRP-regulated epithelial-type exons. In human corneal epithelial cells (HCET), ESRP1 and PNN displayed close localization in and around nuclear speckles and their physical association in protein complexes was identified. In this study, gene expression profiling was performed to identify PNN- and ESRP1-regulated alternative pre-mRNA splicing in human corneal epithelial cells. Immortalized human corneal epithelial cells harboring doxycycline-inducible shRNA against PNN or ESRP1 were created. Whole transcriptome array analysis on ESRP1 or PNN knockdown HCET cells revealed clear alterations in transcript level and splicing pattern of specific subsets of genes with significant overlaps in their candidate targets. Our data suggest that ESRP1 and PNN modulate alternative splicing of a specific subset of exons, but not general splicing events. ESRP1 and PNN may together participate in the regulation of epithelial-specific splicing program in a genome-wide fashion.
2013-01-24 | GSE41996 | GEO
Project description:Dysregulation of mRNA alternative splicing (AS) has been implicated in development and progression of hematological malignancies. How the global AS dysregulation contributes to the development and progression of solid tumors remains generally unclear. Recently, we show that many splicing factors (such as ESRP1 and KHDRBS3) are overexpressed in human primary prostate cancer (PCa) versus normal tissues. To further determine the biological impact of splicing factors on PCa aggressiveness, we treated AR- PC3 cells with siRNAs against either ESRP1 or KHDRBS3 and both. RNA-seq analysis was done in triplicates of rRNA-depleted total RNAs isolated from PC3 cells 48-72hr after siRNA infection. rMATS and DEseq2 were used to reveal the effect of knocking down ESRP1 and/or KHDRBS3 individually or in combination on mRNA splicing landscape and gene expression change.
2020-03-04 | GSE139962 | GEO
Project description:Colorectal cancer (CRC) ranks third for incidence and second for number of deaths among cancer types worldwide. Poor patient survival, due to inadequate response to currently available treatment regimens, points out to the urgent requirement for personalized therapy in CRC patients. Our aim was to provide mechanistic insights into the pro-tumorigenic role of the RNA-binding protein ESRP1, which is highly expressed in a subset of CRC patients. We show that, in CRC cells, ESRP1 binds to and has the same trend in expression as RAC1b, a well-known tumor promoter. Thus, RAC1b may be a potential therapeutic target in ESRP1-overexpressing CRC. RNA binding proteins are well recognized as critical regulators of tumorigenic processes through their capacity to modulate RNA biogenesis, including alternative splicing, RNA stability and mRNA translation. The RNA binding protein Epithelial Splicing Regulatory Protein 1 (ESRP1) can act as tumor suppressor or promoter in a cell type- and disease context-dependent manner. We have previously shown that elevated expression of ESRP1 in colorectal cancer cells can drive tumor progression. To gain further insights into the pro-tumorigenic mechanism of action of ESRP1, we performed cDNA microarray analysis on two colorectal cells lines modulated for ESRP1 expression. Intriguingly, RAC1b was highly expressed, both at mRNA and protein levels, in ESRP1-overexpressing cells, while the opposite trend was observed in ESRP1-silenced CRC cells. Moreover, RAC1 and RAC1b mRNA co-immunoprecipitate with ESRP1 protein. Silencing of RAC1b expression significantly reduced the number of soft agar colonies formed by ESRP1-overexpressing cells, suggesting that ESRP1 acted, at least partially, through RAC1b in its tumor-promoting activities in CRC cells. Thus, our data provide molecular cues on targetable candidates in CRC cases with high ESRP1 expression.
2021-08-31 | GSE180126 | GEO