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LSD1-RCOR2 binding and LSD1 and BRD9 transcriptome analysis in Merkel cell carcinoma cells

ABSTRACT: LSD1-RCOR2 binding and LSD1 and BRD9 transcriptome analysis in Merkel cell carcinoma cells

PROVIDER: PRJNA514030 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10480009_1.fastq.gz	Fastqsanger.gz
	SRR10480009_2.fastq.gz	Fastqsanger.gz
	SRR10480010_1.fastq.gz	Fastqsanger.gz
	SRR10480010_2.fastq.gz	Fastqsanger.gz
	SRR10480011_1.fastq.gz	Fastqsanger.gz

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LSD1 and BRD9 transcriptome analysis in the MKL-1 Merkel cell carcinoma (MCC) cell line

Project description:Merkel cell carcinoma (MCC) is an aggressive neuroendocrine cancer of the skin, caused by either excessive UV damage or integration of the Merkel cell polyomavirus (MCV) genome. Here, we report that virally encoded MCV small T antigen (ST) establishes dependence on the LSD1 transcriptional repressor. Inhibition of LSD1 reduces growth of MCV-positive MCC and suppresses ST’s transformation capacity in vitro and in vivo. To define the mechanism of LSD1 inhibition in MCC, we performed a CRISPR loss-of-function library screen. We found that deletion of components of the non-canonical (ncBAF) chromatin remodeler complex confers resistance to LSD1 inhibitors and that LSD1 and ncBAF antagonistically regulate an overlapping set of genes involved in neuron differentiation. Our work provides mechanistic insight into the dependence of MCC on LSD1 and the role of ncBAF as a tumor suppressor in cancer.

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Genome-wide maps of LSD1-RCOR2 binding in Merkel cell carcinoma cells

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LSD1 inhibition induces differentiation and cell death in Merkel cell carcinoma

Project description:Merkel cell carcinoma (MCC) is a highly aggressive, neuroendocrine skin cancer that lacks actionable mutations, which could be utilized for targeted therapies. Epigenetic regulators governing cell identity may represent unexplored therapeutic entry points. Here, we targeted epigenetic regulators in a pharmacological screen and discovered that the lysine-specific histone demethylase 1A (LSD1/KDM1A) is required for MCC growth in vitro and in vivo. We show that LSD1 inhibition in MCC disrupts the LSD1-CoREST complex leading to displacement and degradation of HMG20B (BRAF35), a poorly characterized complex member that is essential for MCC proliferation. Inhibition of LSD1 causes derepression of transcriptional master regulators of the neuronal lineage, activates a gene expression signature resembling normal Merkel cells, and induces cell cycle arrest and cell death. Our study unveils the importance of LSD1 for proliferation and maintaining cell identity in MCC. There is growing evidence that cancer cells exploit cellular plasticity and dedifferentiation programs to evade destruction by the immune system. The combination of LSD1 inhibitors with checkpoint inhibitors may thus represent a promising treatment strategy for MCC patients.

2020-11-03 | PXD020590 | Pride

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LSD1 and BRD9 transcriptome analysis in the MKL-1 Merkel cell carcinoma (MCC) cell line

Project description:LSD1 and BRD9 transcriptome analysis in the MKL-1 Merkel cell carcinoma (MCC) cell line

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Comparative Transcriptional Profiling of human Merkel cells and Merkel Cell Carcinoma

Project description:Merkel cell carcinoma is supposed to be derived from Merkel cells after infection by Merkel cell polyomavirus (MCV) and other poorly known events. A transcriptional profiling with cDNA microarrays was performed on cells from MCV+ Merkel cell carcinomas and isolated normal Merkel cells. This microarray revealed numerous significantly upregulated genes and down-regulated genes. The extensive list of genes identified in these experiments provides a large body of potentially valuable information of Merkel cell carcinoma carcinogenesis and could represent a source of potential targets for cancer therapy. Two-conditions experiment, MCV vs Normal Merkel Cell. Biological replicates : 4 MCV (Cy5), 1 control = pool of Normal Merkel cells from 3 liftings

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Project description:Merkel cell carcinoma is supposed to be derived from Merkel cells after infection by Merkel cell polyomavirus (MCPyV) and other poorly known events. A transcriptional profiling with cDNA microarrays was performed on cells from MCPyV(+) Merkel cell carcinomas and isolated normal Merkel cells. This microarray revealed numerous significantly upregulated genes and downregulated genes. The extensive list of genes identified in these experiments provides a large body of potentially valuable information of Merkel cell carcinoma carcinogenesis and could represent a source of potential targets for cancer therapy.

2014-01-01 | GSE50434 | GEO

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