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

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

PROVIDER: PRJNA656718 | 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 (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)

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

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

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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.

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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.

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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.

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