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Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (ChIP-seq)

ABSTRACT: Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (ChIP-seq)

PROVIDER: PRJNA656729 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12433420.fastq.gz	Fastqsanger.gz
	SRR12433421.fastq.gz	Fastqsanger.gz
	SRR12433422.fastq.gz	Fastqsanger.gz
	SRR12433423.fastq.gz	Fastqsanger.gz
	SRR12433424.fastq.gz	Fastqsanger.gz

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Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer

Project description:Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer

| PRJNA656718 | ENA

Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (RNA-seq)

Project description:To identify novel regulators and therapeutic targets of β-catenin-driven colorectal cancer development, genome-scale CRISPR-cas9 screens of Wnt/β-catenin were conducted and identified KMT2A as a key player of β-catenin-driven CRC progression. RNA-seq data was integrated with CHIP-seq and other experiments to assess the effect of KMT2A knockout on the transcriptomic profiling of CRC cells.

2021-05-26 | GSE156082 | GEO

Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (RNA-seq)

Project description:Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (RNA-seq)

| PRJNA656730 | ENA

Genome-scale CRISPR-Cas9 screen of Wnt/β-catenin signalling identifies therapeutic targets for Colorectal Cancer (ChIP-seq)

Project description:Using genome-scale CRISPR-Cas9 screening, our study revealed KMT2A as a critical regulator of β-catenin-driven CRC progression. To determine the role of KMT2A in β-catenin-mediated transcription, control and KMT2A-ablated DLD1 and SW480 colorectal cancer (CRC) cells were subjected to CHIP-seq analysis using anti-β-catenin and anti-H3K4me3 antibodies. Data obtained from the CHIP-seq experiments indicated a key role of KMT2A in β-catenin binding on active promoters.

2021-05-26 | GSE156081 | GEO

The oncogene FOXQ1 is a selective activator of Wnt/β-catenin signalling

Project description:The forkhead box transcription factor FOXQ1 is aberrantly induced in various cancers, and contributes to tumour growth and metastasis. It has been suggested that the oncogenic potential of FOXQ1 may be explained by its activation of the Wnt/β-catenin signalling pathway.However, the mode of action of FOXQ1 in the Wnt pathway remains to be resolved. Here we report that FOXQ1 is bimodal transcriptional activator of Wnt target gene expression in normal and cancer cells. Using co-immunoprecipitation, proximity proteomics, and reporter assays, we show that FOXQ1 engages the Wnt transcriptional complex to promote gene expressionvia TCF/LEF transcription factors.

2022-10-05 | PXD030464 | Pride

The Wnt/ß-catenin axis modulates early BBB development by fine-tuning TGFß signalling through ADAMTSL2

Project description:The Wnt/ß-catenin pathway is orchestrating the development of the blood-brain barrier (BBB), but its downstream mediators have remained elusive. To identify potential effectors, we generated an endothelial cell specific Axin1 over-expressing mouse model, AOEiEC. We found that in AOEiE mice Wnt/ß-catenin signalling was down regulated leading to premature regression and remodelling without directly compromising BBB integrity. Interestingly, by comparing transcriptomes of endothelial cells from control and AOEiEC mice, we identified Adamtsl2 as a novel Wnt/ß-catenin-induced, secreted factor, important for stabilizing the cerebral vasculature during development. Importantly, loss-of-function and gain-of-function experiments revealed that Adamtsl2 alone was sufficient to rescue CNS vascular defects seen upon Wnt-signalling inhibition. Furthermore, using various cell and animal models we demonstrate that Adamtsl2 exerts its function by fine-tuning the TGFβ signalling pathway in CNS vessels. In conclusion, this study implicates Adamtsl2 as a mediator of Wnt/ß-catenin signalling during BBB development by linking it to TGFβ signalling.

2019-01-31 | GSE77874 | GEO

Wnt signalling in colon cancer

Project description:Hypothesis and proof of concept: Our hypothesis is that increase in cellular iron import proteins (TfR1, DMT1) occur early in the adenoma-carcinoma sequence through mutations in APC and lead to cellular iron loading. As demonstrated in our previous work the effects of this iron loading is to mediate increased Wnt signalling resulting in c-myc induction. This in turn serves to increase the expression of iron import proteins (TfR1, DMT1) and decrease the expression of iron export (ferroportin [FPN]) and storage (ferritin) proteins. Such a hypothesis explains how Wnt signalling controls iron metabolism and ensures that there is adequate cellular iron for ATP generation and cellular proliferation. Experimental design: To test such a hypothesis we aim to prospectively collect the following colorectal tissue from patients attending for colonoscopy: 1. Normal colonic mucosa in patients with no colorectal pathology (n = 30) 2. Polyps and matched normal colon (n = 30) 3. Colorectal cancers and matched normal colon (n = 30) We also intend to collect serum and urine from the following patient groups: 4. Normal colonoscopy (n = 30) 5. Colorectal adenomas (n = 30) 6. Colorectal cancers (n = 30) Primary outcome(s): Measured at baseline, using the expression of proteins in the tissue and serum to detect the cellular and systemic iron transport proteins. The techniques used will include mass spectrometry, western blotting, real time PCR and immunohistochemistry.

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Stabilisation of b-Catenin-WNT signalling by USP10 in APC-truncated colorectal cancer drives cancer stemness and enables super-competitor signalling

Project description:The contribution of deubiquitylating enzymes to b-Catenin stabilisation in intestinal stem cells and colorectal cancer (CRC) is poorly understood. Here, we report the deubiquitylase USP10 as APC-truncation- specific regulator enhancer of b-Catenin stability, potentiating WNT signalling pathway in CRC and cancer stem cells. Mechanistically, interaction studies in various CRC cell lines and in vitro binding studies, together with computational modelling, revealed that USP10 binding to b-Catenin is mediated via its USP10 unstructured N-terminus and requires truncated in the absence of full-length APC. Notably, loss of USP10 in CRISPR engineered intestinal organoids reduces tumorigenic properties of CRC cells and organoids, and blocks the super competitor-properties of APC-mutated intestinal cells, elicits induces the expression of differentiation genes, and opposes the APC-truncated phenotype in an intestinal hyperplasia model of D.melanogaster. Taken together, our findings reveal USP10s role in intestinal tumourigenesis by stabilising b-Catenin, leading to aberrant WNT signalling, enhancing cancer cell stemness and implicate the DUB USP10 as a cancer specific therapeutic vulnerability in Apc truncated CRC.

2024-01-01 | GSE226364 | GEO

The differential expression of lncRNAs in wnt/β-catenin pathway activation or inactivation of triple-negative breast cancer.

Project description:To screen the associated lncRNAs with wnt/β-catenin pathway activation of TNBC,through lncRNA microarray profiling between activated and inactivated wnt/β-catenin pathway of TNBC tissues, lnc-WAL (wnt/β-catenin associated lncRNA; WAL) was selected as the top upregulated lncRNA in wnt/β-catenin pathway activation compared with the inactivation group.

2024-07-05 | GSE270306 | GEO

FOX transcription factors are common regulators of Wnt/β-catenin signaling

Project description:The Wnt/β-catenin signaling pathway is a critical regulator of development and stem cell maintenance. Mounting evidence suggests that the context-specific outcome of Wnt signaling is determined by the collaborative action of multiple transcription factors, including members of the highly conserved forkhead box (FOX) protein family. The contribution of FOX transcription factors to Wnt signaling has not been investigated in a systemic manner. Here, by combining β-catenin reporter assays with Wnt pathway-focused qPCR arrays and proximity proteomics of selected FOX family members, we determine that most FOX proteins are involved in the regulation of Wnt pathway activity and the expression of Wnt ligands and target genes. We conclude that FOX proteins are common regulators of the Wnt/β-catenin pathway that may control the outcome of Wnt signaling in a tissue-specific manner.

2023-04-19 | PXD038811 | Pride

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