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Genomic analysis of mice with endothelium-specific TERT knockout (RNA-Seq)

ABSTRACT: Genomic analysis of mice with endothelium-specific TERT knockout (RNA-Seq)

PROVIDER: PRJNA1000566 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25469932_1.fastq.gz	Fastqsanger.gz
	SRR25469932_2.fastq.gz	Fastqsanger.gz
	SRR25469933_1.fastq.gz	Fastqsanger.gz
	SRR25469933_2.fastq.gz	Fastqsanger.gz
	SRR25469934_1.fastq.gz	Fastqsanger.gz

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Genomic analysis of mice with endothelium-specific TERT knockout (scRNA-Seq)

Project description:Genomic analysis of mice with endothelium-specific TERT knockout (scRNA-Seq)

| PRJNA1000567 | ENA

Genomic analysis of mice with endothelium-specific TERT knockout (scRNA-Seq)

Project description:Health of endothelial cells (EC) is fundamental for function of vital organs. However, it has not been established whether EC senescence underlies the pathophysiology of aging. Here, we report a mouse model of EC senescence. Inactivation of telomerase (TERT) expression sets the stage for aging and predisposes cells to replicative senescence. TERT maintains telomere length and has telomere-independent effects on cell transcriptome and physiology. We generated mice with TERT gene knock-out (KO) specifically in EC. We analyzed EC from adipose tissues (AT) and skeletal muscle cells from Tert-EC-KO and control mice raised on either chow or high-calorie diet (HCD) and subjected them to RNA sequencing (RNAseq). Single cell RNAseq data were also obtained for subcutaneous and visceral AT. Preliminary analysis of data deposited online indicates that TERT KO induces premature cell senescence and dysfunction. Moreover, HCD feeding exacerbates the effect of TERT loss. We conclude that the Tert-EC-KO mice are a useful model to study EC senescence and its effects on aging-associated organ dysfunction.

2023-12-05 | GSE239687 | GEO

Genomic analysis of mice with endothelium-specific TERT knockout (RNA-Seq)

Project description:Health of endothelial cells (EC) is fundamental for function of vital organs. There is evidence accumulating that senescence of EC is associated with aging-related diseases. However, it has not been established whether EC senescence underlies the pathophysiology of aging. Here, we report a mouse model of EC senescence. Inactivation of telomerase (TERT) expression sets the stage for aging and predisposes cells to replicative senescence. TERT maintains telomere length and has telomere-independent effects on cell transcriptome and physiology. We generated mice with TERT gene knock-out (KO) specifically in EC. We analyzed EC from adipose tissues (AT) and skeletal muscle cells from Tert-EC-KO and control mice raised on either chow or high-calorie diet (HCD) and subjected them to RNA sequencing (RNAseq). Single cell RNAseq data were also obtained for subcutaneous and visceral AT. Preliminary analysis of data deposited online indicates that TERT KO induces premature cell senescence and dysfunction. Moreover, HCD feeding exacerbates the effect of TERT loss. We conclude that the Tert-EC-KO mice are a useful model to study EC senescence and its effects on aging-associated organ dysfunction.

2023-12-05 | GSE239686 | GEO

TMEM100, a Lung-Specific Endothelium Gene

Project description:TMEM100, a Lung-Specific Endothelium Gene

| PRJNA862751 | ENA

Alteration of genomic TERT-binding sites by BIBR1532 in primary neurons

Project description:The goal of this study is to understand how the specific TERT inhibitor BIBR1532 preconditioning regulates transcriptional reprogramming in mouse neuronal cells. We use CUT-Tag approach to comprehensively map the genomic binding sites of TERT in primary neurons and determine the alteration of is binding profile after BIBR1532 preconditioning. By obtaining over 10 million reads per sample, we generated genome-wide TERT chromatin-binding maps of mouse primary neurons. Under normal conditions, we show that more than 50% of the TERT binding sites were located at the promoter regions, many of them are previously unknown genomic loci. Intriguingly, BIBR1532 preconditioning significantly alters TERT-chromatin binding profile. Out of the total promoter binding sites by TERT, 30.4% (2,837 peaks) and 31.7% (2,954 peaks) are respectively upregulated and downregulated in TERT-binding after BIBR1532 preconditioning. Interestingly, we find that BIBR1532-preconditioned neurons show significant upregulation of promoter binding of TERT to the mitochondrial antioxidant genes. Together, these results identify the previously unknown TERT-binding sites in the mouse primary neurons and demonstrate that BIBR1532 preconditioning confers neuronal ischemic tolerance through TERT-mediated transcriptional reprogramming.

2021-09-28 | GSE171762 | GEO

Gene expression in mice with endothelium-specific telomerase knockout.

Project description: Not available

| S-EPMC10755458 | biostudies-literature

CDK7 adipose tissue specific knockout mice

Project description:CDK7 adipose tissue specific knockout mice

| PRJNA627425 | ENA

E4F1 and ZNF148 are transcriptional activators of the A57C and wildtype TERT promoter

Project description:Point mutations within the TERT promoter are the most common recurrent somatic non-coding mutation identified across different cancer types, including glioblastoma, melanoma, hepatocellular carcinoma and bladder cancer. They are most abundant at C146T and C124T and more rare at A57C, with the latter originally described as a familial case but subsequently shown also to occur somatically. All three mutations create de novo ETS (E-twenty-six specific) binding sites and result in the reactivation of the TERT gene, allowing cancer cells to achieve replicative immortality. Here, we employed a systematic proteomics screen to identify transcription factors preferentially binding to the C146T, C124T and A57C mutations. While we confirmed binding of multiple ETS factors to the mutant C146T and C124T sequences, we identified E4F1 a an A57C-specific binder and ZNF148 as a TERT WT binder that is excluded from the TERT promoter by the C124T allele. Both proteins are activating transcription factors that bind specifically to the A57C and wildtype (at position 124) TERT promoter sequence in corresponding cell lines and upregulate TERT transcription and telomerase activity.

2023-11-04 | PXD037776 | Pride

Gene expression profile at Ptpmt1 cardiomyocytes-specific Knockout mcie, Eif2a mutant mice, Gcn2 Knockout mice, and Hri Knockout mice

Project description:Gene expression profile at Ptpmt1 cardiomyocytes-specific Knockout mcie, Eif2a mutant mice, Gcn2 Knockout mice, and Hri Knockout mice

| PRJNA828131 | ENA

PITX1 suppresses TERT transcription

Project description:Using microcell-mediated chromosome transfer (MMCT) into the mouse melanoma cell line, B16F10, we have previously found that human chromosome 5 carries a gene, or genes, that can negatively regulate TERT expression. To identify the gene responsible for the regulation of TERT transcription, we performed cDNA microarray analysis using parental B16F10 cells, telomerase negative B16F10 microcell hybrids with a human chromosome 5 (B16F10MH5), and its revertant clones (MH5R) with reactivated telomerase. Here we report the identification of PITX1, whose restoration leads to the downregulation of mouse tert (mtert) transcription, as a TERT suppressor gene. Additionally, both human TERT (hTERT) and mouse TERT (mtert) promoter activity can be suppressed by PITX1. We showed that three and one binding sites, respectively, within the hTERT and mtert promoters that express a unique conserved region are responsible for the transcriptional activation of TERT. Furthermore, we showed that PITX1 binds to the TERT promoter both in vitro and in vivo. Thus, PITX1 suppresses TERT transcription through direct binding to the TERT promoter, which ultimately regulates telomerase activity.

2010-09-10 | GSE23216 | GEO

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