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Disruption of the Uty epigenetic regulator locus in hematopoietic cells phenocopies the profibrotic attributes of Y chromosome loss in heart failure

ABSTRACT: Disruption of the Uty epigenetic regulator locus in hematopoietic cells phenocopies the profibrotic attributes of Y chromosome loss in heart failure

PROVIDER: PRJNA1008262 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25732308_1.fastq.gz	Fastqsanger.gz
	SRR25732308_2.fastq.gz	Fastqsanger.gz
	SRR25732309_1.fastq.gz	Fastqsanger.gz
	SRR25732309_2.fastq.gz	Fastqsanger.gz
	SRR25732310_1.fastq.gz	Fastqsanger.gz

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Disruption of the Uty epigenetic regulator locus in hematopoietic cells phenocopies the profibrotic attributes of Y chromosome loss in heart failure

Project description:Heart failure is a prevalent condition that affects millions of people worldwide with men exhibiting a higher incidence than women. However, the mechanisms underlying this sex difference remain poorly understood. Our previous work has shown that the presence of mosaic loss of Y chromosome (LOY) in leukocytes is causally associated with increased risk for heart failure. In the current study, we show that LOY macrophages from the failing hearts of humans with dilated cardiomyopathy exhibit widespread changes in gene expression that correlate with fibroblast activation in the myocardium, and we identify the ubiquitously transcribed tetratricopeptide Y linked (Uty) gene in leukocytes as a causal locus for accelerated progression of heart failure in male mice with LOY. Using single-cell multiomics analysis, we demonstrate that Uty disruption leads to epigenetic alterations in both monocytes and macrophages, increasing the propensity of differentiation into pro-fibrotic macrophages that can contribute to cardiac fibrosis and dysfunction. These findings shed light on the mechanisms that contribute to the higher incidence of heart failure in males and suggest potential targets for treatment of heart failure patients with LOY in leukocytes.

2024-01-22 | GSE241486 | GEO

Disruption of the <i>Uty</i> epigenetic regulator locus in hematopoietic cells phenocopies the profibrotic attributes of Y chromosome loss in heart failure.

Project description:Heart failure affects millions of people worldwide, with men exhibiting a higher incidence than women. Our previous work has shown that mosaic loss of the Y chromosome (LOY) in leukocytes is causally associated with an increased risk for heart failure. Here, we show that LOY macrophages from the failing hearts of humans with dilated cardiomyopathy exhibit widespread changes in gene expression that correlate with cardiac fibroblast activation. Moreover, we identify the ubiquitously transcribed t et ratricopeptide Y-linked (Uty) gene in leukocytes as a causal locus for an accelerated progression of heart failure in male mice with LOY. We demonstrate that Uty disruption leads to epigenetic alterations in both monocytes and macrophages, increasing the propensity of differentiation into profibrotic macrophages. Treatment with a transforming growth factor-β-neutralizing antibody prevented the cardiac pathology associated with Uty deficiency in leukocytes. These findings shed light on the mechanisms that contribute to the higher incidence of heart failure in men.

| S-EPMC11343478 | biostudies-literature

Integrin beta-1 (Itgb1) in profibrotic myofibroblasts

Project description:Fibrosis due to extracellular matrix (ECM) secretion from myofibroblasts complicates many chronic liver diseases causing scarring and organ failure. Integrin-dependent interaction with scar ECM promotes profibrotic features. This microarray study was performed to clarify the role of integrin beta-1 (Itgb1) in profibrotic myofibroblasts.

2016-08-18 | E-MTAB-4810 | biostudies-arrayexpress

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Project description:have identical attributes Transcriptome or Gene expression

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Effects of a Uty gene trap on the transcriptomic profile of mouse cardiac left ventricles in response to castration

Project description:Previous results from the laboratory showed that the genetic make up of chromosome Y modulated the effects of castration on the transcriptome of mouse cardiac left ventricles. To test the effect of the chromosome Y Uty locus, the current study tests how castration affects the transcriptomes of cardiac left ventricles from adult male carrying a Uty gene trap (KO) in comparison to wild-type (WT)couterparts.

2021-09-19 | GSE158370 | GEO

Profibrotic regulation of FGFR3 signaling in fibroblasts

Project description:We employed dermal fibroblasts isolated from Fgfr3G374Rneo+ mice, which do not express functional Fgfr3 (Fgfr3KO), from Fgfr3G374Rneo- mice with ligand-independent constitutive activation of Fgfr3 (Fgfr3Act) and from wildtype (WT) mice with normal expression of Fgfr3. Total RNA from these murine dermal fibroblasts (passage 4) were extracted and after quality control, were hybridized to the murine genome U74 gene chip. We have identified that Fgfr3 regulates important profibrotic pathways in fibroblasts. Selective upregulation of fibroblast growth factor receptor 3 (FGFR3) and its ligand FGF9 promote fibroblast activation and tissue fibrosis Transcriptome profiling, in silico analysis and functional experiments revealed that FGFR3 synergistically induces multiple profibrotic pathways including Endothelin-, Interleukin-4- and CTGF-signaling in a CREB-dependent manner. Inhibition of FGFR3 signaling by fibroblast-specific knockout of FGFR3 or FGF9 or pharmacological inhibition of FGFR3 inhibited fibroblast activation and attenuated experimental skin fibrosis. We have characterized FGFR3 as an upstream regulator of a network of profibrotic mediators and as a potential target for the treatment of fibrosis.

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Y chromosome linked UTY modulates sex differences in valvular fibroblast methylation in response to nanoscale extracellular matrix cues

Project description:Aortic valve stenosis (AVS) is a progressive disease wherein males develop valve calcification relative to females that develop valve fibrosis. Valvular interstitial cells (VICs) aberrantly activate to myofibroblasts during AVS, driving the fibrotic valve phenotype in females. Myofibroblasts further differentiate into osteoblast-like cells and secrete calcium nanoparticles, driving valve calcification in males. We hypothesized the lysine demethylase UTY (ubiquitously transcribed tetratricopeptide repeat containing, Y-linked) decreases methylation uniquely in response to nanoparticle cues in the valve extracellular matrix to promote an osteoblast-like phenotype. Here, we describe a bioinspired hydrogel cell culture platform to interrogate how nanoscale cues modulate sex-specific methylation states in VICs activating to myofibroblasts and osteoblast-like cells. We found UTY (ubiquitously transcribed tetratricopeptide repeat containing, Y-linked) modulates VIC phenotypes in response to nanoscale cues uniquely in males. Overall, we reveal a novel role of UTY in the regulation of calcification processes in males during AVS progression.

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Profibrotic regulation of FGFR3 signaling in fibroblasts

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Design of a gene signature to assess the proinflammatory and the profibrotic polarization of murine fibroblasts

Project description:We provide an original multi-stage approach identifying a gene signature to assess the fibroblast polarization. Prototypic polarizations (inflammatory/fibrotic) were induced by seeded mouse embryonic fibroblasts (MEFs) with TNFα or TGFß1, respectively. The transcriptomic and proteomic profiles were obtained by RNA microarray and LC/MS-MS. Gene Ontology and pathways analysis were performed among the differentially expressed genes (DEGs) and proteins (DEPs). Balb/c mice underwent daily intradermal injections of HOCl (or PBS) as an experimental murine model of inflammation-mediated fibrosis in a time-dependent manner. As results, 1,456 and 2,215 DEGs, and 289 and 233 DEPs were respectively found in MEFs in response to TNFα or TGFß1, respectively. Among the most significant pathways, we combined 26 representative genes to encompass the proinflammatory and profibrotic polarizations of fibroblasts. Based on principal component analysis, this signature deciphered baseline state, proinflammatory polarization, and profibrotic polarization as accurately as did RNA microarray and LC/MS-MS. Then, we assessed the gene signature on dermal fibroblasts isolated from the experimental murine model. We observed a proinflammatory polarization at day 7, and a mixture of a proinflammatory and profibrotic polarizations at day 42 in line with histological findings. Our approach provides a small-size and convenient gene signature to assess murine fibroblast polarization.

2022-07-12 | PXD034078 | Pride

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