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The nuclear envelope protein Net39 is essential for muscle nuclear integrity and chromatin organization

ABSTRACT: The nuclear envelope protein Net39 is essential for muscle nuclear integrity and chromatin organization

PROVIDER: PRJNA647764 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12281700.fastq.gz	Fastqsanger.gz
	SRR12281701.fastq.gz	Fastqsanger.gz
	SRR12281702.fastq.gz	Fastqsanger.gz
	SRR12281703.fastq.gz	Fastqsanger.gz
	SRR12281704.fastq.gz	Fastqsanger.gz

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The nuclear envelope protein Net39 is essential for muscle nuclear integrity and chromatin organization

Project description:Lamins and transmembrane proteins within the nuclear envelope regulate nuclear structure and chromatin organization. Nuclear Envelope Transmembrane Protein 39 (Net39) is muscle nuclear envelope protein whose functions in vivo have not been explored. We show that mice lacking Net39 succumb to severe myopathy and juvenile lethality, with concomitant disruption in nuclear integrity, chromatin accessibility, gene expression and metabolism. These abnormalities resemble those of Emery-Dreifuss muscular dystrophy (EDMD), caused by mutations in A-type Lamins (LMNA) and other genes, like Emerin (EMD). We observe that Net39 is downregulated in EDMD patients, implicating Net39 in the pathogenesis of this disorder. Our findings highlight the role of Net39 at the nuclear envelope in maintaining muscle chromatin organization, gene expression and function, and its potential contribution to the molecular etiology of EDMD.

2020-11-23 | GSE154850 | GEO

The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (RNA-Seq)

Project description:Lamins and transmembrane proteins within the nuclear envelope are regulators of nuclear structure and chromatin organization. Nuclear Envelope Transmembrane Protein 39 (Net39) is a muscle-restricted nuclear envelope protein. We show that mice lacking Net39 succumb to severe myopathy and neonatal lethality, with concomitant disruption in nuclear integrity, chromatin accessibility, gene expression and metabolism. These abnormalities resemble those of Emery-Dreifuss muscular dystrophy (EDMD), caused by mutations in A-type Lamins (LMNA) and other genes, like Emerin (EMD). We observe that Net39 is downregulated in EDMD patients, implicating Net39 in the pathogenesis of this disorder. Our findings reveal an intimate role for the nuclear envelope in maintaining muscle chromatin organization, gene expression and function, and highlight the importance of Net39 in these processes and in the molecular etiology of EDMD.

2020-11-24 | GSE154849 | GEO

The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ChIP-Seq)

2020-11-24 | GSE154848 | GEO

The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ATAC-Seq)

2020-11-24 | GSE154847 | GEO

The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ChIP-Seq)

Project description:The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ChIP-Seq)

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The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ATAC-Seq)

Project description:The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (ATAC-Seq)

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The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (RNA-Seq)

Project description:The nuclear envelope protein Net39 is essential for nuclear integrity, chromatin organization, and muscle growth (RNA-Seq)

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The nuclear envelope protein Net39 is essential for muscle nuclear integrity and chromatin organization.

Project description:Lamins and transmembrane proteins within the nuclear envelope regulate nuclear structure and chromatin organization. Nuclear envelope transmembrane protein 39 (Net39) is a muscle nuclear envelope protein whose functions in vivo have not been explored. We show that mice lacking Net39 succumb to severe myopathy and juvenile lethality, with concomitant disruption in nuclear integrity, chromatin accessibility, gene expression, and metabolism. These abnormalities resemble those of Emery-Dreifuss muscular dystrophy (EDMD), caused by mutations in A-type lamins (LMNA) and other genes, like Emerin (EMD). We observe that Net39 is downregulated in EDMD patients, implicating Net39 in the pathogenesis of this disorder. Our findings highlight the role of Net39 at the nuclear envelope in maintaining muscle chromatin organization, gene expression and function, and its potential contribution to the molecular etiology of EDMD.

| S-EPMC7846557 | biostudies-literature

Net39 protects muscle nuclei from mechanical stress during the pathogenesis of Emery-Dreifuss muscular dystrophy [snRNA-seq]

Project description:Mutations in genes encoding nuclear envelope proteins lead to diseases known as nuclear envelopathies, characterized by skeletal muscle and heart abnormalities, such as Emery-Dreifuss Muscular Dystrophy (EDMD). The tissue-specific role of the nuclear envelope in the etiology of these diseases has not been extensively explored. We previously showed that global deletion of the muscle-specific nuclear envelope protein NET39 in mice leads to neonatal lethality due to skeletal muscle dysfunction. To study the potential role of the Net39 gene in adulthood, we generated a muscle-specific conditional knockout (cKO) of Net39 in mice. cKO mice recapitulated key skeletal muscle features of EDMD, including muscle wasting, impaired muscle contractility, abnormal myonuclear morphology, and DNA damage. The loss of Net39 rendered myoblasts hypersensitive to mechanical stretch, resulting in stretch-induced DNA damage. Net39 was downregulated in a mouse model of congenital myopathy, and restoration of Net39 expression through AAV gene delivery extended lifespan and ameliorated the muscle abnormalities. These findings establish NET39 as a direct contributor to the pathogenesis of EDMD by protecting against mechanical stress and DNA damage.

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Net39 protects muscle nuclei from mechanical stress during the pathogenesis of Emery-Dreifuss muscular dystrophy [RNA-seq]

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