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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [RNA-Seq]

ABSTRACT: HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [RNA-Seq]

PROVIDER: PRJNA1029989 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26441800_1.fastq.gz	Fastqsanger.gz
	SRR26441800_2.fastq.gz	Fastqsanger.gz
	SRR26441900.fastq.gz	Fastqsanger.gz
	SRR26441801_1.fastq.gz	Fastqsanger.gz
	SRR26441801_2.fastq.gz	Fastqsanger.gz

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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes

Project description:HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes

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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [ChIP-Seq]

Project description:HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [ChIP-Seq]

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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [scRNA-Seq]

Project description:HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [scRNA-Seq]

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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [Hi-C]

Project description:HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [Hi-C]

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HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [scRNA-Seq]

Project description:High Mobility Group A1 (HMGA1) is an architectural chromatin-binding protein that regulates gene expression in various biological contexts, including differentiation and cancer. While previous studies show that HMGA1 acts by binding specific gene promoters or by contributing to the enhanceosome, its global effect on transcription remains unclear. HMGA1 is also critical for the formation of senescence-associated heterochromatic foci (SAHF) in oncogene-induced senescence (OIS), a stable form of cell cycle arrest with a pro-inflammatory phenotype. This link between the two roles of HMGA1, gene regulation and chromatin organisation, has not been fully explained. Here, we used graph theory and data integration from high-throughput assays to investigate how HMGA1 binding impacts the chromatin interactions network. Our results demonstrate that HMGA1 profoundly remodels the global chromatin network during OIS and contributes to stronger compartmentalization. This remodelling goes beyond SAHF, leading to substantial gene repositioning and differential gene expression, highlighting a novel role for HMGA1 in altering chromatin environments. The HMGA1 effects of gene expression go beyond senescence and appear to be relevant in other contexts, such as lung cancer.

2024-07-08 | GSE245807 | GEO

HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [Hi-C]

2024-07-08 | GSE245804 | GEO

HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [ChIP-Seq]

2024-07-08 | GSE245802 | GEO

HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes [RNA-Seq]

2024-07-08 | GSE245801 | GEO

HMGA1 causes a global shift in chromatin architecture linked to transcriptional changes

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-07-08 | GSE245808 | GEO

Proteomic analysis of HMGA1-silencing

Project description:HMGA1 is a well-established oncogene and is a master regulator in breast cancer cells controlling the shift from a non-tumorigenic epithelial-like phenotype towards a highly aggressive mesenchymal-like one. In this work we compared HMGA1-silenced versus control MDA-MB-231 by means of a label free shotgun proteomics approach and crossed these data with DNA microarray expression profile obtained on the same cells. Resulting data were then filtered for genes linked to poor prognosis in breast cancer gene expression meta-datasets. This workflow allows us to establish a small molecular signature composed by 21 members with a prognostic value as regards overall-, recurrence free-, and distant metastasis free-survival in breast cancer.

2018-10-17 | PXD002032 | Pride

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