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Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice [mRNA-seq]

ABSTRACT: Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice [mRNA-seq]

PROVIDER: PRJNA1008728 | ENA |

REPOSITORIES: ENA

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Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice [mRNA-seq]

Project description:Nuclear envelope (NE) ruptures are emerging observations in Lamin-related dilated cardiomyopathy, an adult-onset disease caused by loss-of-function mutations in Lamin A/C, a nuclear lamina component. Here, we test a prevailing hypothesis that NE ruptures trigger the pathological cGAS-STING cytosolic DNA-sensing pathway using a mouse model of Lamin cardiomyopathy. The reduction of Lamin A/C in cardiomyocytes of adult mice causes pervasive NE ruptures in cardiomyocytes, preceding inflammatory transcription, fibrosis, and fatal dilated cardiomyopathy. NE ruptures are followed by DNA damage accumulation without causing immediate cardiomyocyte death. However, cGAS-STING-dependent inflammatory signaling remains inactive. Deleting cGas or Sting does not rescue cardiomyopathy. The lack of cGAS-STING activation is likely due to the near absence of cGAS expression in adult cardiomyocytes at baseline. Instead, extracellular matrix (ECM) signaling is activated and predicted to initiate pro-inflammatory communication from Lamin-reduced cardiomyocytes to fibroblasts. Our work nominates ECM signaling, not cGAS-STING, as a potential inflammatory contributor in Lamin cardiomyopathy.

2024-04-26 | GSE241577 | GEO

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [sci-RNA-seq]

2024-04-26 | GSE241587 | GEO

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [SLAM-IT-seq]

2024-04-26 | GSE241589 | GEO

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice

Project description:Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice

| PRJNA1008739 | ENA

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [sci-RNA-seq]

Project description:Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [sci-RNA-seq]

| PRJNA1008736 | ENA

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [SLAM-IT-seq]

Project description:Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin cardiomyopathy mice [SLAM-IT-seq]

| PRJNA1008740 | ENA

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice.

Project description:Nuclear envelope (NE) ruptures are emerging observations in Lamin-related dilated cardiomyopathy, an adult-onset disease caused by loss-of-function mutations in Lamin A/C, a nuclear lamina component. Here, we test a prevailing hypothesis that NE ruptures trigger the pathological cGAS-STING cytosolic DNA-sensing pathway using a mouse model of Lamin cardiomyopathy. The reduction of Lamin A/C in cardio-myocyte of adult mice causes pervasive NE ruptures in cardiomyocytes, preceding inflammatory transcription, fibrosis, and fatal dilated cardiomyopathy. NE ruptures are followed by DNA damage accumulation without causing immediate cardiomyocyte death. However, cGAS-STING-dependent inflammatory signaling remains inactive. Deleting cGas or Sting does not rescue cardiomyopathy in the mouse model. The lack of cGAS-STING activation is likely due to the near absence of cGAS expression in adult cardiomyocytes at baseline. Instead, extracellular matrix (ECM) signaling is activated and predicted to initiate pro-inflammatory communication from Lamin-reduced cardiomyocytes to fibroblasts. Our work nominates ECM signaling, not cGAS-STING, as a potential inflammatory contributor in Lamin cardiomyopathy.

| S-EPMC11290591 | biostudies-literature

Pervasive nuclear envelope ruptures precede ECM signaling and disease onset without activating cGAS-STING in Lamin-cardiomyopathy mice

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

2024-04-25 | GSE241590 | GEO

Lamin B2 controls nuclear envelope permeability and regulates cardiomyocyte regeneration

Project description:Lamin B2 controls nuclear envelope permeability and regulates cardiomyocyte regeneration

| PRJNA423262 | ENA

Gene induction in STAT1-/- fibroblasts transduced with lentiviruses expressing human cGAS

Project description:The hypothesis tested was that lentiviral driven cGAS expression activates antiviral gene expression. Cells were transduced with lentiviruses expressing cGAS or a control (firefly luciferase). Total RNA was harvested 48 h post-transduction and processed for Illumina BeadArray.

2013-12-01 | E-GEOD-52241 | biostudies-arrayexpress

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