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Transcriptome profiling of muscle stem cells from control, mdx and Sirt6 knockout on mdx background mice

ABSTRACT: In this study, Pax7-Cre mediated inactivation of Sirt6 in mdx mice resulted in profound improvement of the mdx phenotype at the functional level. To study the underlying molecular mechanisms we performed RNA-seq of MuSCs from control, mdx and Sirt6mKO/mdx mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE168983 | GEO | 2022/05/12

REPOSITORIES: GEO

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Transcriptome profiling of muscle from control, mdx and Sirt6 knockout on mdx background mice

Project description:In this study, Pax7-Cre mediated inactivation of Sirt6 in mdx mice resulted in profound improvement of the mdx phenotype at the functional level. To study the underlying molecular mechanisms we performed RNA-seq of muscles from control, mdx and Sirt6mKO/mdx mice.

2022-05-12 | GSE168984 | GEO

Inactivation of Sirt6 ameliorates muscular dystrophy in mdx mice by releasing suppression of utrophin expression

Project description:In this study, Pax7-Cre mediated inactivation of Sirt6 in mdx mice resulted in profound improvement of the mdx phenotype at the functional level. To study the underlying molecular mechanisms and identify specific Sirt6 targets irrespectively to mdx mutation, we performed RNA-seq of freshly isolated muscle stem cells from control and Sirt6mKO mice.

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Transcriptome profiling of muscle from control, mdx and Sirt6 knockout on mdx background mice

Project description:Transcriptome profiling of muscle from control, mdx and Sirt6 knockout on mdx background mice

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Transcriptome profiling of muscle stem cells from control, mdx and Sirt6 knockout on mdx background mice

Project description:Transcriptome profiling of muscle stem cells from control, mdx and Sirt6 knockout on mdx background mice

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Genome-wide H3K56ac profiling after Sirt6 knockdown in mESCs [ChIP-seq]

Project description:Sirt6, the NAD+-dependent deacetylase, has been described to deacetylate H3K9, H3K18, and H3K56. However, analysis of the acetylation status revealed that loss of Sirt6 caused a massive increase of histone H3K56ac levels but no detectable change of histone H3K9ac and H3K18ac, indicating that SIRT6 is the dominant deacetylase for H3K56ac in muscle stem cells (MuSCs). Further, we investigate genome-wide H3K56ac profiling in the absence of Sirt6 in MuSCs and mouse embryonic stem cells (mESCs) using high throughput sequencing (ChIP-seq).

2022-05-13 | GSE168331 | GEO

Genome-wide H3K56ac profiling after Sirt6 inactivation in MuSCs [ChIP-seq]

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Genome-wide DNA accessibility maps after Sirt6 inactivation in muscle stem cells [ATAC-seq]

Project description:Sirt6, the NAD+-dependent deacetylase, has been described to deacetylate H3K9, H3K18, and H3K56. However, analysis of the acetylation status revealed that loss of Sirt6 caused a massive increase of histone H3K56ac levels but no detectable change of histone H3K9ac and H3K18ac, indicating that SIRT6 is the dominant deacetylase for H3K56ac in muscle stem cells (MuSCs). Further, we investigate genome transposase-accessible chromatin in the absence of Sirt6 in MuSCs using high throughput sequencing (ATAC-seq).

2022-05-13 | GSE168329 | GEO

Restoration of energy homeostasis by SIRT6 extends healthy lifespan

Project description:Aging leads to a gradual decline in physical activity and disrupted energy homeostasis. The NAD+-dependent SIRT6 deacylase regulates aging and metabolism through mechanisms that largely remain unknown. Here, we show that SIRT6 overexpression leads to a reduction in frailty and lifespan extension in both male and female B6 mice. A combination of physiological assays, in vivo multi-omics analyses and 13C lactate tracing identified an age-dependent decline in glucose homeostasis and hepatic gluconeogenesis (GNG) capacity in wild type mice. In contrast, aged SIRT6-transgenic mice preserve GNG capacity and glucose homeostasis through an improvement in the utilization of two major GNG precursors, lactate and glycerol. To mediate these changes, mechanistically, SIRT6 increases hepatic GNG gene expression, de novo NAD+ synthesis, and systemically enhances glycerol release from adipose tissue. These findings show that SIRT6 optimizes energy homeostasis in old age to delay frailty and preserve healthy aging.

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Inactivation of Sirt6 ameliorates muscular dystrophy in mdx mice by releasing suppression of utrophin expression

Project description:Inactivation of Sirt6 ameliorates muscular dystrophy in mdx mice by releasing suppression of utrophin expression

| PRJNA820280 | ENA

Expression data from WT SIRT6 and SIRT6 albumin CRE conditional mice

Project description:Microarray analysis of liver tissue from WT SIRT6 and conditional knockout of SIRT6 using albumin-Cre (SIRT6Co/Co ;Alb-Cre) at 2 and 8 months of age RNA was extracted from mouse liver tissue at 2 and 8 months of age. RNA from three pairs of WT SIRT6 and SIRT6Co/Co ;Alb-Cre mice was combined and hybridized to Affymetrix mouse gene 1.0 ST arrays.

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