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RNA-seq on MCF10A-YAP cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting TRAM2 gene

ABSTRACT: We performed a CRISPR-based functional genetic screen targeting TEAD4 binding motif located within the YAP-bound enhancers. The screen identified a novel enhancer regulating TRAM2. We observed TRAM2 overexpression can induce EMT as YAP does. Then, we performed the RNA-seq to measure the transcription changes upon TRAM2-KOs in MCF10A-YAP cells

ORGANISM(S): Homo sapiens

PROVIDER: GSE147556 | GEO | 2020/06/01

REPOSITORIES: GEO

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RNA-seq on MCF10A-YAP5SA cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting the TEAD4 binding motif within the identified enhancers

Project description:We performed a CRISPR-based functional genetic screen targeting TEAD4 binding motif located within the YAP-bound enhancers. The screen identified seven functional enhancers whose targeting resulted in a marked negative effect on the proliferation of MCF10A-YAP-5SA cells (overexpressed constrictively activated YAP) but no significant effect on MCF10A (parental control) cells. We then carried out RNA-seq analysis on MCF10A-YAP-5SA cells transduced with sgRNA vectors targeting these seven enhancers (enhancers A, B, C, D, E, F, G) as well as the non-targeting sgRNA as control (NT).

2021-01-01 | GSE137981 | GEO

RNA-seq on MCF10A cells overexpressed with empty control vectors, TRAM2 and activated-YAP

Project description:We performed a CRISPR-based functional genetic screen targeting TEAD4 binding motif located within the YAP-bound enhancers. The screen identified a novel enhancer regulating TRAM2. We observed TRAM2 overexpression can induce EMT as YAP does. Then, we performed the RNA-seq to measure the transcription changes upon TRAM2 and YAP overexpression

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RNA-seq on MCF10A-YAP cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting TRAM2 gene

Project description:RNA-seq on MCF10A-YAP cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting TRAM2 gene

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A splicing switch of TEAD4 regulates Hippo-YAP signaling pathway to inhibit tumor proliferation

Project description:Splicing dysregulations extensively occur in cancers, yet the biological consequences of such alterations are mostly undefined. Here we report that the Hippo-YAP signaling, a key pathway that regulates cell proliferation and organ size, is under control of a new splicing switch. We show that TEAD4, the transcription factor that mediates Hippo-YAP signaling, undergoes alternative splicing facilitated by the tumor suppressor RBM4, producing a truncated isoform, TEAD4-S, which lacks N-terminal DNA-binding domain but maintains YAP-interaction domain. TEAD4-S is located in both nucleus and cytoplasm, acting as a dominant negative isoform to YAP activity. Consistently, TEAD4-S is reduced in cancer cells, and its re-expression suppresses cancer cell proliferation and migration, inhibiting tumor growth in xenograft mouse model. Furthermore, TEAD4-S is reduced in human cancers, and patients with elevated TEAD4-S levels have improved survival. Altogether these data reveal a novel RBM4-mediated splicing switch that serves to fine-tune Hippo-YAP pathway. Cell lines stably expressing YAP, YAP/TEAD4-S, YAP/TEAD4-FL, YAP/RBM4 and control vector were created, and the total RNA was purified from the cells using TRIzol reagents. The polyadenylated RNAs were purified for construction of sequencing library using kapa TruSeq Total RNA Sample Prep kits (UNC High Throughput Sequencing Facility).

2016-06-16 | E-GEOD-80372 | biostudies-arrayexpress

RNA-seq on MCF10A-YAP5SA cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting the TEAD4 binding motif within the identified enhancers

Project description:RNA-seq on MCF10A-YAP5SA cells (overexpressed constrictively activated YAP in MCF10A cells) transduced with sgRNAs vectors targeting the TEAD4 binding motif within the identified enhancers

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A comprehensive enhancer screen identifies TRAM2 as a key mediator of YAP oncogenesis

Project description:Frequent activation of the co-transcriptional factor YAP is observed in a large number of solid tumors. Activated-YAP associates with enhancer loci via TEAD4-DNA-binding protein, and stimulates cancer aggressiveness. Although thousands of YAP/TEAD4 binding-sites were annotated, their functional importance is unknow. Here, we implemented a genetic approach to uncover functions of YAP/TEAD4-associated enhancers, demonstrated its robustness, and used it to reveal a network of enhancers required for YAP-mediated proliferation. We focused on Enhancer TRAM2, as its target gene TRAM2 showed the strongest expression-correlation with YAP in nearly all tumor types. Interestingly, TRAM2 phenocopied YAP-induced cell proliferation, migration and invasion phenotypes, and correlated with poor patient survival. Mechanistically, we identified FSTL-1 as a major direct client of TRAM2 that is involved in these phenotypes. Thus, TRAM2 is a key novel mediator of YAP-induced oncogenic proliferation and cellular invasiveness.

2021-01-14 | PXD018559 | Pride

YAP Inhibition in HCC cells (Hep3B)

Project description:siRNA-mediated inhibition compared to untreated cells and cells transfected with nonsense siRNA. Loss of contact inhibition and anchorage-independent growth are hallmarks of cancer cells. In this context, frequent inactivation of the Hippo pathway and subsequent nuclear enrichment of the transcriptional coactivator yes-associated protein (YAP) uncouple cell proliferation and anti-apoptosis from contact inhibition, associated with uncontrolled tumor growth and tumor cell dissemination. However, general molecular mechanisms of tumor-supporting YAP activity remain unclear. In this study, we show that overexpression and nuclear accumulation of YAP in hepatocytes and hepatocellular carcinoma (HCC) cells leads to an induction of the Notch pathways through transcriptional activation of the Notch ligand jagged-1 (Jag-1). This induction of Jag-1 strictly depends on binding of YAP to TEAD4 and does not rely on WNT/β-catenin pathway activity. Co-activation of YAP, TEAD4, Jag-1, and the Notch target gene Hes-1 was significantly higher in HCC from patients with poor prognosis. High-level expression and nuclear accumulation of YAP correlates with Jag-1/Notch activation not only in human HCC tissues, but also in colon and pancreatic cancer tissues. Thus, our data demonstrate that YAP-driven co-activation of the Jag-1/Notch pathway in part facilitates oncogenic properties of the oncogene YAP not only in HCC but also in different gastrointestinal malignancies. Expression profiling of untreated HCC cell lines (control 1), cells transfected with scrambled/nonsense siRNA (control 2), and after siRNA-mediated YAP inhibition.

2012-11-01 | E-GEOD-35004 | biostudies-arrayexpress

Widespread association between YAP/TAZ/TEAD and AP-1 at enhancers drives oncogenic growth [ChIP-Seq]

Project description:The goal of this study was to identify YAP/TAZ direct transcriptional targets and transcriptional partners, through ChIP-sequencing and gene expression profiling. ChIP-seq analysis of YAP, TAZ, TEAD4 and JUN in MDA-MB-231 cells. Two independent replicates were analysed for each TF, as well as for negative controls.

2015-08-03 | E-GEOD-66081 | biostudies-arrayexpress

A splicing switch of TEAD4 regulates Hippo-YAP signaling pathway to inhibit tumor proliferation

2016-06-16 | GSE80372 | GEO

Transcription profiling of human YAP wild-type or mutants overexpressing MCF10A cells

Project description:This study compares gene expression change upon expression of Yes-associated protein (YAP) wild-type or mutants in order to establish the importance of TEAD binding and WW domains in the gene-induction function of YAP. The results indicate that gene-induction is seriously comprised in YAP-S94A (TEAD binding domain mutant) expressing cells. And mutantion of WW domains (YAP-W1W2) also affect a fraction of YAP induced genes. Therefore both TEAD binding domain and WW domains are required for the full function of YAP in gene-induction. Experiment Overall Design: Four samples are included: 1. pQCXIH vector control; 2 YAP-WT expression; 3. YAP-S94A expression; 4. YAP-W1W2 expression. Gene expression profiles of YAP wild-type or mutants expressing cells were compared to that of vector control. Experiments were done in MCF10A mammary epithelial cells.

2010-01-19 | E-GEOD-13218 | biostudies-arrayexpress

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