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Forebrain neuronal Smc3 regulates weight and metabolic parameters associated with regulation of hypothalamic Melanocortin 4 receptor

ABSTRACT: Forebrain neuronal Smc3 regulates weight and metabolic parameters associated with regulation of hypothalamic Melanocortin 4 receptor

PROVIDER: PRJNA1060298 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27400600.fastq.gz	Fastqsanger.gz
	SRR27400601.fastq.gz	Fastqsanger.gz
	SRR27400602.fastq.gz	Fastqsanger.gz
	SRR27400603.fastq.gz	Fastqsanger.gz
	SRR27400524.fastq.gz	Fastqsanger.gz

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Forebrain neuronal Smc3 regulates weight and metabolic parameters associated with regulation of hypothalamic Melanocortin 4 receptor

Project description:SMC3 is a major component of the cohesin complex that regulates higher-order chromatin organization and gene expression. Mutations in SMC3 gene are found in patients with Cornelia de Lange syndrome (CdLs). This syndrome is characterized by intellectual disabilities, behavioral patterns as self-injury, as well as metabolic dysregulation. Nonetheless, little is known about the role of neuronal SMC3 in gene expression and physiology in adulthood. This study determined the role of SMC3 in adulthood brain, by knocking out Smc3 specifically in adulthood forebrain excitatory neurons. Neuron-specific SMC3 knockout mice displayed a very strong metabolic phenotype in both male and female mice, including a robust overweight phenotype, loss of muscle mass, increased food consumption, lower respiratory exchange ratio, lower energy expenditure and hormonal changes. The hypothalamus of these mice displayed dysregulated morphology and RNA-seq in the hypothalamus reveals dysregulation in multiple cellular pathways, including decrease of Melanocortin 4 receptor (Mc4r) expression level, a main regulator of appetite. Treatment of these mice with Setmelanotide, a MC4r agonist, induced a decrease of weight and food consumption in these mice. Therefore, we have identified specific and reversable metabolic parameters that are regulated by neuronal Smc3 in adulthood.

2024-01-04 | GSE252366 | GEO

Forebrain neuronal Smc3 regulates weight and metabolic parameters partly through regulation of hypothalamic Melanocortin 4 receptor

Project description:SMC3 is a major component of cohesin complex that regulates higher-order chromatin organization and gene expression. Mutations in SMC3 gene are found in patients with Cornelia de Lange syndrome (CdLs). This syndrome is characterized by intellectual disabilities, behavioral patterns as self-injury, as well as metabolic dysregulation. Nonetheless, little is known about the role of neuronal SMC3 in gene expression and physiology especially in adulthood. This study determined the role of SMC3 in adulthood brain, by knocking out Smc3 specifically in adulthood forebrain excitatory neurons. Neuron-specific SMC3 knockout mice displayed a very strong metabolic phenotype in both male and female mice, including a robust overweight phenotype, loss of muscle mass, increased food consumption, lower respiratory exchange ratio, lower energy expenditure and hormonal changes. The hypothalamus of these mice displayed dysregulated morphology and RNA-seq in the hypothalamus reveals dysregulation in multiple cellular pathways, including decrease of Melanocortin 4 receptor (Mc4r) expression level , a main regulator of appetite. Treatment of these mice with Setmelanotide, a MC4r agonist, induced a decrease of weight and food consumption in these mice. Therefore, we have identified specific metabolic pathways that are regulated by Smc3 in forebrain neurons, and specific mechanisms that are involved.

2023-09-18 | GSE243287 | GEO

Forebrain neuronal Smc3 regulates weight and metabolic parameters partly through regulation of hypothalamic Melanocortin 4 receptor

Project description:Forebrain neuronal Smc3 regulates weight and metabolic parameters partly through regulation of hypothalamic Melanocortin 4 receptor

| PRJNA1017531 | ENA

Sex-Specific modulation of Anxiety-Like behavior by Forebrain Neuronal SMC3 in Mice

Project description:SMC3 is a chromatin binding factor that plays central roles in genome organization and in proper neurodevelopment. Mutations in SMC3 gene (SMC3) induce neurodevelopmental and behavioral phenotypes in humans, including changes in anxiety behavior and self-injury. However, it is not clear what are the exact roles of SMC3 in behavior in adulthood or if its effects are only developmental. Using an adulthood forebrain excitatory neuron specific Smc3 knockout mouse model, the current study determined specific sex-dependent effects of SMC3 ablation during the adulthood. Behavioral tests identified anxiolytic effects of Smc3 knockout in females and anxiogenic effects in males four weeks after initiation of adulthood knockout. The prefrontal cortex, a regulator of anxiety behavior, also displayed sex-dependent effects in dendritic complexity. Transcriptional analysis revealed differential effects of Smc3 knockout in males and females, including changes in anxiety-related genes and relevant transcriptional pathways. While anxiety behavior was sex-specific, both males and females developed self-injury behavior at approximately ten weeks after induction of knockout. The current study demonstrates that neuronal SMC3 regulates anxiety during the adulthood in a sex-specific manner.

2024-09-01 | GSE270835 | GEO

Sex-Specific modulation of Anxiety-Like behavior by Forebrain Neuronal SMC3 in Mice

Project description:Sex-Specific modulation of Anxiety-Like behavior by Forebrain Neuronal SMC3 in Mice

| PRJNA1128600 | ENA

TBX3 defines the functional identity of hypothalamic melanocortin neurons

Project description:TBX3 defines the functional identity of hypothalamic melanocortin neurons

| PRJNA490554 | ENA

The Smc3 deacetylase Hos1 closes the cohesin acetylation cycle

Project description:Cohesion between sister chromatids is mediated by the chromosomal cohesin complex. In budding yeast, cohesin is loaded onto chromosomes during the G1 phase of the cell cycle. During S-phase, the replication fork-associated acetyltransferase Eco1 acetylates the cohesin subunit Smc3 to promote establishment of sister chromatid cohesion. At the time of anaphase, Smc3 loses its acetylation again, but the Smc3 deacetylase and possible importance of Smc3 deacetylation are unknown. Here, we show that the class I histone deacetylase family member Hos1 is responsible for Smc3 deacetylation. Cohesin is protected from deacetylation while bound to chromosomes, but is deacetylated as soon as it dissociates from chromosomes following separase cleavage at anaphase onset. Non-acetylated Smc3 is required as a substrate for cohesion establishment in the following cell cycle. Our results complete the description of the Smc3 acetylation cycle and provide unexpected insight into the importance of de novo Smc3 acetylation for cohesion establishment.

2010-06-10 | GSE22257 | GEO

Calibrated Smc3 ChIP-seq for wild type, smc3-2R, wpl1Δ and smc3-2R wpl1Δ strains arrested in meiotic prophase I

Project description:Genome binding/occupancy profiling of the cohesin subunit Smc3 by high throughput sequencing. S. pombe is included as the calibration genome.

2022-02-04 | GSE185020 | GEO

Releasing activity disengages cohesinâs Smc3/Scc1 interface in a process blocked by acetylation

Project description:Sister chromatid cohesion conferred by entrapment of sister DNAs within a tripartite ring formed between cohesinâs Scc1, Smc1, and Smc3 subunits is generated during S and eventually destroyed at anaphase through cleavage of Scc1 by separase. Throughout the cell cycle, cohesinâs association with chromosomes is controlled by opposing activities: loading by the Scc2/4 complex and release by a separase independent releasing activity. Co-entrapment of sister DNAs during replication is accompanied by acetylation of Smc3 by Eco1, which blocks releasing activity and ensures that sisters remain stably connected. Because fusion of Smc3 to Scc1 prevents release and bypasses the requirement for Eco1, we suggested that release is mediated by disengagement of the Smc3/Scc1 interface. We now show that all mutations capable of bypassing Eco1, be they in cohesinâs Smc1, Smc3, Scc1,Wapl, Pds5, or Scc3 subunits, greatly reduce dissociation of N-terminal cleavage fragments of Scc1 (NScc1) from Smc3. We show that this process involves interaction between Smc ATPase heads and is inhibited by Smc3 acetylation Effect of mutations QQ and EQ in Smc3 on cohesin loading onto chromosomes

2016-02-18 | E-GEOD-76890 | biostudies-arrayexpress

Calibrated Smc3 ChIP-seq for wild type, smc3-2R, wpl1Δ and smc3-2R wpl1Δ strains arrested in meiotic prophase I

Project description:Calibrated Smc3 ChIP-seq for wild type, smc3-2R, wpl1Δ and smc3-2R wpl1Δ strains arrested in meiotic prophase I

| PRJNA767387 | ENA