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Homo sapiens

ABSTRACT: Low H3K27me3 define poorly prognostic pediatric posterior fossa ependymomas

PROVIDER: PRJNA352239 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR4841750_1.fastq.gz	Fastqsanger.gz
	SRR4841750_2.fastq.gz	Fastqsanger.gz
	SRR4841751_1.fastq.gz	Fastqsanger.gz
	SRR4841751_2.fastq.gz	Fastqsanger.gz
	SRR4841752_1.fastq.gz	Fastqsanger.gz

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Project description:Low H3K27me3 and DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

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Lowered H3K27me3 and DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

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Homo sapiens

Project description:Global reduction in H3K27me3 and DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

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Low H3K27me3 define poorly prognostic pediatric posterior fossa ependymomas

Project description:A subgroup of Posterior fossa ependymomas show reduced H3K27me3 are more invasive, exhibit poor prognosis and epigenetically deregulated genes converge on radial glial factors, suggesting developing cerebellar radial glia as candidate cells-of-origin.

2016-11-23 | GSE89451 | GEO

Global reduction in H3K27me3 and DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

Project description:A subgroup of Posterior fossa ependymomas show reduced H3K27me3, global DNA hypomethylation, are more invasive, exhibit poor prognosis and epigenetically deregulated genes converge on radial glial factors, suggesting developing cerebellar radial glia as candidate cells-of-origin.

2016-11-23 | GSE89448 | GEO

Low H3K27me3 and DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

2016-11-23 | GSE89446 | GEO

Targeting integrated metabolic and epigenetic pathways in lethal childhood ependymomas

Project description:Childhood Posterior Fossa-A ependymomas (PFAs) have limited treatment options. Integrated metabolic/epigenetic analyses performed to discover therapeutic targets in PFAs demonstrated enhanced glycolysis and TCA-cycle metabolism. PFAs exhibit low H3K27me3, as in H3K27M gliomas. Therefore, we subjected them to panobinostat which kills H3K27M cells, along with the metabolic inhibitor metformin. Combined treatment increased H3K27me3, suppressed metabolism and demonstrated potent therapeutic efficacy in vitro and in vivo, suggesting promising therapeutic strategies.

2022-07-01 | GSE134572 | GEO

DNA hypomethylation define poorly prognostic pediatric posterior fossa ependymomas

Project description:A subset of genomically silent childhood posterior fossa ependymomas show reduced H3K27me3, global DNA hypomethylation, are more invasive, exhibit poor prognosis and epigenetically deregulated genes converge on radial glial factors, suggesting developing cerebellar radial glia as candidate cells-of-origin.

2016-11-28 | GSE87779 | GEO

Multi-omic analysis of cell-of-origin and epigenomic state in pediatric H3K27M gliomas

Project description:It is not known whether midline pediatric gliomas driven by Histone 3 K27M mutations (oncohistones) or EZHIP expression (oncohistone-mimics) share a common cell-of-origin, or arise from distinct cell types with unique vulnerabilities to PRC2 inhibition and partner alterations. Here, we define the etiological and oncogenic relationship between pediatric midline gliomas characterized by inhibition of K27M and K27M-like oncohistones. We assemble an extensive reference for gliogenesis from the developing mouse and human fetal brain. With bulk and single-cell transcriptomics and epigenomics, we profiled a large cohort of primary tumors comprising H3.1K27M and H3.3K27M pontine gliomas, H3.3K27M thalamic gliomas, and EZHIP+ posterior fossa ependymomas. We focus on differences across axes of location (thalamus vs. pons vs. posterior fossa), tumor type (diffuse midline gliomas vs. ependymomas), and oncohistone (H3.1/2K27M vs. H3.3K27M vs. EZHIP). We use tumor molecular features to delineate transcriptional states and cell-of-origin in each entity. Finally, we use culture models in isogenic contexts to interrogate the effect of each oncohistone or mimic.

2022-06-27 | GSE188625 | GEO

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