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A super-enhancer actuated by heterodimerization of a specific YAP1 splicing variant, YAP1-2α, with TAZ endows cancer stemness and drug resistance

ABSTRACT: A super-enhancer actuated by heterodimerization of a specific YAP1 splicing variant, YAP1-2α, with TAZ endows cancer stemness and drug resistance

PROVIDER: PRJNA1212009 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR32033018_1.fastq.gz	Fastqsanger.gz
	SRR32033018_2.fastq.gz	Fastqsanger.gz
	SRR32033019_1.fastq.gz	Fastqsanger.gz
	SRR32033019_2.fastq.gz	Fastqsanger.gz
	SRR32033020_1.fastq.gz	Fastqsanger.gz

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A super-enhancer actuated by heterodimerization of a specific YAP1 splicing variant, YAP1-2α, with TAZ endows cancer stemness and drug resistance

Project description:Cancer cells with homologous recombination defects are particularly susceptible to PARP inhibitors (PARPi) and experience synthetic lethality. We found that the development of PARPi resistance in these cancer cells is associated with the formation of nuclear membrane-less condensates containing a specific YAP1 variant termed YAP1-2α, TAZ, TEAD, and BRD4. These nuclear condensates are generated through liquid-liquid phase separation (LLPS), initiated by the heterodimerization of YAP1-2α with TAZ, followed by multivalent interactions with mediator proteins to activate a super-enhancer. This super-enhancer facilitates the robustness of cancer cells by increasing cancer stemness, contributing to anti-cancer drug resistance not limited to PARPi. Our study underscores the unexpected connection between RNA splicing and the malignant grade of cancer. Targeting YAP1-2α/TAZ/TEAD-driven super-enhancers is a promising approach for overcoming resistance to cancer treatment.

2025-01-28 | GSE287274 | GEO

Effect of YAP1/TAZ on rumen epithelial cell proliferation

Project description:Promoting rumen development is closely related to the health and efficient growth of ruminants. In the present study, we aimed to assess the impact of YAP1/TAZ on RE proliferation. The transcriptomic expression was analyzed to investigate the potential regulatory networks. The results indicated that GA promoted RE cell proliferation, while VP disrupted RE cell proliferation. The Hippo, Wnt, and calcium signaling pathways were altered in cells following the regulation of YAP1/TAZ. Upon YAP1/TAZ activation through GA, the CCN1/2 increased to promote RE cell proliferation. While when the YAP1/TAZ was inhibited by VP, the BIRC3 decreased to suppress RE cell proliferation. Thus, YAP1/TAZ may be potential targets for regulating RE cell proliferation. These findings broaden our understanding of the role of YAP1/TAZ and their regulators in RE and offer a potential target for promoting rumen development.

2024-04-03 | GSE252747 | GEO

Gene espression Profile by YAP1 and TAZ

Project description:The Hippo signaling pathway is evolutionarily well conserved, and all core components have one or more mammalian orthologs, including MST1/2 (Hippo), SAV1 (Salvador), LATS1/2 (Warts), MOB1 (Mats), YAP1/TAZ (Yorkie), and TEAD1/2/3/4 (Scalloped) (Halder and Johnson, 2011; Pan, 2007; Dong et al., 2007; Saucedo and Edgar, 2007). When Hippo signaling is active, YAP1/TAZ is phosphorylated by LATS1/2 and sequestered by 14-3-3 proteins in cytoplasm. When Hippo signaling is absent, unphosphorylated YAP1/TAZ enters the nucleus and increases transcriptional activation of genes involved in cell proliferation and survival. The indispensability of the Hippo pathway in restricting cell growth and proliferation has prompted speculation that many members of the pathway might be involved in tumorigenesis. To see the effect of YAP1 and TAZ in HCC cell, we generated gene expression profile.

2014-12-31 | GSE54617 | GEO

YAP1/TAZ knockdown in melanoma

Project description:YAP1/TAZ knockdown in melanoma

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YAP1 and TAZ knockdown in human keratinocytes

Project description:RNA sequencing (RNAseq) of N/TERT2G keratinocytes transduced with pooled siRNAs targeting YAP1 and TAZ (WWTR1), or non-targeting control siRNA (siCon)

2020-02-24 | GSE137531 | GEO

RNA-Sequencing analysis of liver tissue from female Foxa3-Cre YAP1 knockout mice, Foxa3-Cre YAP1 KO TAZ heterozygous mice, and WT littermate controls, at 3-4 months of age

Project description:We developed a mouse model of bile duct paucity by deleting Yes-associated protein 1 (YAP1) in foregut endoderm progenitors, using the Foxa3 promoter to drive Cre expression. YAP1 KO mice are viable postnatally and survive long-term despite a complete failure of intrahepatic bile duct development, resembling the liver phenotype of Alagille syndrome. Adult YAP1 KO mice suffer from severe chronic cholestasis, but show minimal hepatocellular injury, suggesting that the hepatocytes have adapted to preserve liver function and reduce damage from the toxicity of bile acids and bilirubin. We next bred Foxa3-Cre YAP1 KO TAZ heterozygote and Foxa3-Cre YAP1 KO TAZ KO (DKO) mice to assess the role of TAZ in this model. DKO mice and male YAP KO TAZ heterozygotes died around time of birth. The survivors, YAP1 KO TAZ heterozygote females, were overall phenotypically similar to YAP1 KO mice, with absence of intrahepatic bile ducts and long-term survival. We used RNA-seq to analyze the gene expression patterns of whole liver tissue of female adult YAP1 KO mice compared to WT controls (C57BL/6 background), and female adult YAP1 KO TAZ heterozygote (YKTH) mice compared to WT controls (mixed C57BL/6 - FVB background). We found that both YAP1 KO and YAP1 KO TAZ heterozygote female mice were overall very similar and showed similar alterations in gene expression compared to WT. There were a few differences in pathways involved in cell cycling and monocyte recruitment.

2023-07-20 | GSE213815 | GEO

YAP1 and TAZ knockdown in human keratinocytes

Project description:YAP1 and TAZ knockdown in human keratinocytes

| PRJNA565787 | ENA

Transcriptome modulation by loss-of-YAP1/TAZ in SK-N-MC Ewing Sarcoma cells

Project description:YAP1 (Yes-associated protein 1) and TAZ (transcriptional coactivator with PDZ-binding motif, or WWTR1) are nucleo-cytoplasmic shuttling proteins that can function in the nucleus as transcriptional coactivators. Here we sought to evaluate which genes are regulated by endogenous levels of YAP/TAZ. We compared SK-N-MC cells transfected with a control non-targeting siRNA with cells transfected with a mix of siRNA targeting both YAP and TAZ.

2018-09-27 | GSE120512 | GEO

YAP/TAZ drives ependymoma-like tumour formation in mice

Project description:YAP1 gene fusions have been observed in a subset of paediatric ependymomas. Here we show that, ectopic expression of active nuclear YAP1 (nlsYAP5SA) in ventricular zone neural progenitor cells using conditionally-induced NEX/NeuroD6-Cre is sufficient to drive brain tumour formation in mice. Neuronal differentiation is inhibited in the hippocampus. Deletion of YAP1’s negative regulators LATS1 and LATS2 kinases in NEX-Cre lineage in double conditional knockout mice also generates similar tumours, which are rescued by deletion of YAP1 and its paralog TAZ. YAP1/TAZ-induced mouse tumours display molecular and ultrastructural characteristics of human ependymoma. RNA sequencing and quantitative proteomics of mouse tumours demonstrate similarities to YAP1-fusion induced supratentorial ependymoma. Finally, we find that transcriptional cofactor HOPX is upregulated in mouse models and in human YAP1-fusion induced ependymoma, supporting their similarity. Our results show that uncontrolled YAP1/TAZ activity in neuronal precursor cells leads to ependymoma-like tumours in mice.

2020-05-26 | PXD018131 | Pride

Inhibition of ERK 1/2 pathway downregulates YAP1/TAZ signaling in human cardiomyocytes exposed to hyperglycemic conditions

Project description:Hyperglycemia-mediated cardiac dysfunction is an acute initiator in the development of vascular complications, leading to cardiac fibrosis. To investigate the effects of hyperglycemia-mediated changes in cardiomyocytes, cells were cultured in-vitro under normoglycemic (5 mM or 25 mM D-glucose) and hyperglycemic (5 → 50 mM or 25 → 50 mM D-glucose) conditions, respectively. After 24-hours of hyperglycemic exposure, cells were collected for RNA-sequencing (RNA-seq) studies to further investigate the differentially expressed genes (DEG) related to inflammation and fibrosis in samples cultured under hyperglycemic-in comparison with normoglycemic-conditions. Western Blotting was done to evaluate the protein expression of YAP1/TAZ under hyperglycemia induced stress conditions, as it is known to be involved in fibrotic and vascular inflammatory-mediated conditions. RNA-seq revealed the DEG of multiple targets including matrix metalloproteinases and inflammatory mediators, whose expression was significantly altered in the 5 → 50 mM in comparison with the 25 → 50 mM condition. Western Blotting showed a significant upregulation of the protein expression of the YAP1/TAZ pathway under these conditions as well (5 → 50 mM). To further probe the relationship between the inflammatory extracellular-signal-regulated kinase (ERK 1/2) and its downstream effects on YAP1/TAZ expression we studied the effect of inhibition of the ERK 1/2 signaling cascade in the 5 → 50 mM condition. The application of an ERK 1/2 inhibitor inhibited the expression of the YAP1/TAZ protein in the 5 → 50 mM condition, and this strategy may be useful in preventing and improving hyperglycemia associated cardiovascular damage and inflammation.

2024-02-23 | GSE223586 | GEO

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