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Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism

ABSTRACT: Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism

PROVIDER: PRJNA860613 | ENA |

REPOSITORIES: ENA

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Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (RNA-Seq)

Project description:Lysine-succinylation is a subtype of protein acylation associated with metabolic regulation of succinyl-CoA in the TCA cycle. Deficiency of succinyl-CoA synthetase (SCS), the TCA-cycle enzyme catalyzing the reversible conversion of succinyl-CoA to succinate, leads to mitochondrial encephalomyopathy in humans and embryonic lethality in mice. This report presents a conditional forebrain-specific knock-out (KO0 mouse model of Sucla2, the gene encoding the ATP-specific beta isoform of SCS, resulting in postnatal deficiency of the entire SCS complex. Results demonstrate that the accumulation of succinyl-CoA in the absence of SCS leads to hyper-succinylation within the cerebral cortex of adult mice. With previous research identifying succinylation marks on histones, and with proteomic evidence of histone lysine-succinylation within the presented model, global chromatin accessibility was surveyed in Sucla2 mutant and control mice via ATAC-sequencing. Data show wide-scale alterations in chromatin landscape and global gene expression. Computational analysis of combined chromatin-accessibility and gene expression data reveal perturbation of neuronal transcriptional regulatory networks in the mutant forebrain, suggesting SCS-related changes in the protein succinylome and chromatin accessibility play a significant role in the neuronal pathogenesis of SCS-deficiency.

2022-07-27 | GSE208691 | GEO

Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (ATAC-Seq)

2022-07-27 | GSE208690 | GEO

Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism

Project description:Lysine-succinylation is a subtype of protein acylation associated with metabolic regulation of succinyl-CoA in the TCA cycle. Deficiency of succinyl-CoA synthetase (SCS), the TCA-cycle enzyme catalyzing the reversible conversion of succinyl-CoA to succinate, leads to mitochondrial encephalomyopathy in humans and embryonic lethality in mice. This report presents a conditional forebrain-specific knock-out (KO) mouse model of Sucla2, the gene encoding the ATP-specific beta isoform of SCS, resulting in postnatal deficiency of the entire SCS complex. Results demonstrate that the accumulation of succinyl-CoA in the absence of SCS leads to hyper-succinylation within the cerebral cortex of adult mice. Using immunoprecipitation (IP) and concomitant mass-spectrometry, a highly enriched succinylated proteome is identified in the Sucla2-deficient forebrain. The Sucla2-deficient changes in the succinylome are largely prevalent in metabolic pathways, including the TCA cycle and the electron transport chain (ETC). Specifically, increased succinylation of Complex I of the ETC correlates with functionally significant deficiency of the enzymatic complex. These results suggest that protein-succinylation plays a role in respiratory chain dysfunction associated with SCS-deficiency in patients.

2022-06-21 | MSV000089697 | MassIVE

Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (RNA-Seq)

Project description:Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (RNA-Seq)

| PRJNA860619 | ENA

Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (ATAC-Seq)

Project description:Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism (ATAC-Seq)

| PRJNA860620 | ENA

Succinyl-CoA synthetase deficiency in mouse forebrain results in hyper-succinylation with perturbed neuronal transcriptional regulation and metabolism

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

2022-07-27 | GSE208692 | GEO

Protein Succinylation resulting from succinyl-coA ligase deficiency

Project description:Protein hyper-succinylation in fibroblasts and myotubes derived from patients with mutations in succinyl-coA ligase.

2018-07-11 | MSV000082599 | MassIVE

Loss of succinyl-CoA synthetase in mouse forebrain results in hypersuccinylation with perturbed neuronal transcription and metabolism.

Project description:Lysine succinylation is a subtype of protein acylation associated with metabolic regulation of succinyl-CoA in the tricarboxylic acid cycle. Deficiency of succinyl-CoA synthetase (SCS), the tricarboxylic acid cycle enzyme catalyzing the interconversion of succinyl-CoA to succinate, results in mitochondrial encephalomyopathy in humans. This report presents a conditional forebrain-specific knockout (KO) mouse model of Sucla2, the gene encoding the ATP-specific beta isoform of SCS, resulting in postnatal deficiency of the entire SCS complex. Results demonstrate that accumulation of succinyl-CoA in the absence of SCS leads to hypersuccinylation within the murine cerebral cortex. Specifically, increased succinylation is associated with functionally significant reduced activity of respiratory chain complex I and widescale alterations in chromatin landscape and gene expression. Integrative analysis of the transcriptomic data also reveals perturbations in regulatory networks of neuronal transcription in the KO forebrain. Together, these findings provide evidence that protein succinylation plays a significant role in the pathogenesis of SCS deficiency.

| S-EPMC10683835 | biostudies-literature

Acetyl-CoA synthetase 2: a critical linkage in obesity-induced tumorigenesis in myeloma

Project description:Acetyl-CoA synthetase 2: a critical linkage in obesity-induced tumorigenesis in myeloma

| PRJNA548531 | ENA

Acetyl-CoA synthetase 2: a critical linkage in obesity-induced tumorigenesis in myeloma

Project description:Obesity is often linked to malignancies including multiple myeloma and the underlying mechanisms remain elusive. Here we showed that acetyl-CoA synthetase 2 (ACSS2) may be an important linker in obesity-related myeloma. ACSS2 is overexpressed in myeloma cells derived from obese patients and contributes to myeloma progression. We identified adipocyte-secreted angiotensin II as a direct cause of adiposity in increased ACSS2 expression. ACSS2 interacts with oncoprotein interferon regulatory factor 4 (IRF4), enhances IRF4 stability and IRF4-mediated gene transcription through activation of acetylation. The importance of ACSS2 overexpression in myeloma is confirmed by the finding that an inhibitor of ACSS2 reduces myeloma growth both in vitro and in a diet-induced obese mouse model. Our findings demonstrate a key impact for obesity-induced ACSS2 on the progression of myeloma. Given the central role of ACSS2 in many tumors, this mechanism could be important to other obesity-related malignancies.

2019-06-13 | GSE132604 | GEO

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