The transcription Factor Slug represses p16Ink4a and regulates murine muscle stem cell aging
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ABSTRACT:
PROVIDER: PRJNA527959 | ENA |
REPOSITORIES: ENA
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Project description:Sustainable muscle regeneration necessitates proper maintenance of the quiescence-reversible SCs pool. Activation of p16Ink4a-associated senescence pathway during aging breaks muscle homeostasis and causes degenerative muscle disease by irreversibly dampening satellite cell (SC) self-renewal capacity. We performed microarrays analysis to compare the genome-wide gene expression profiles of wild-type and Slug-deficient SCs and identified distinct classes of up-regulated genes upon deletion of Slug gene.
2019-03-20 | GSE128507 | GEO
Project description:Activation of the p16Ink4a-associated senescence pathway during aging breaks muscle homeostasis and causes degenerative muscle disease by irreversibly dampening satellite cell (SC) self-renewal capacity. Here, we report that the zinc-finger transcription factor Slug is highly expressed in quiescent SCs of mice and functions as a direct transcriptional repressor of p16Ink4a. Loss of Slug promotes derepression of p16Ink4a in SCs and accelerates the entry of SCs into a fully senescent state upon damage-induced stress. p16Ink4a depletion partially rescues defects in Slug-deficient SCs. Furthermore, reduced Slug expression is accompanied by p16Ink4a accumulation in aged SCs. Slug overexpression ameliorates aged muscle regeneration by enhancing SC self-renewal through active repression of p16Ink4a transcription. Our results identify a cell-autonomous mechanism underlying functional defects of SCs at advanced age. As p16Ink4a dysregulation is the chief cause for regenerative defects of human geriatric SCs, these findings highlight Slug as a potential therapeutic target for aging-associated degenerative muscle disease.
| S-EPMC6561969 | biostudies-literature
Project description:The transcription factor slug represses genes with E-box and then activates cancer stem cell related pathway: Wnt, Notch and Hedgehog pathway. Chromatin immunoprecipitation (ChIP) of slug by ChIP-on-chip analysis demonstrated that slug indirectly activates cancer stem cell related pathway and thus promotes vasculogenic mimicry formation. Comparison of HepG2-control in regular culture, HepG2-slug in regular culture and HepG2-slug on Matrigel.
2012-09-21 | E-GEOD-41027 | biostudies-arrayexpress
Project description:The transcription factor slug represses genes with E-box and then activates cancer stem cell related pathway: Wnt, Notch and Hedgehog pathway. Chromatin immunoprecipitation (ChIP) of slug by ChIP-on-chip analysis demonstrated that slug indirectly activates cancer stem cell related pathway and thus promotes vasculogenic mimicry formation.
2012-09-21 | GSE41027 | GEO
Project description:Loss of function of CDKN2A/B, also known as INK4/ARF [encoding for p16INK4A, p15INK4B, and p14ARF (mouse p19Arf)]), confers susceptibility to cancers, whereas its up-regulation during organismal aging provokes cellular senescence and tissue degenerative disorders. To better understand molecular regulation of the locus, we knocked P2A-mCherry into the C-terminus of p16INK4A, and this construct faithfully recapitulated the endogenous transcription. Using this reporter cell line, we performed a noncoding tiling pooled screening targeting open chromatin regions spanning the approximately 500-kb region in the topological associated domain that includes p16INK4A. In both Cas9- and dCas9-KRAB–mediated screenings, we identified a 42-bp DNA sequence within exon 1β of the ARF gene, as the repressive element controlling p16INK4A expression. Chromatin conformation capture indicated that inactivating this element abolished the physical interaction between p15INK4B and ARF, thereby abolishing p16INK4A repression. This study has revealed a new mechanism of transcriptional regulation of p16INK4A by long-range chromatin interaction.
2019-12-17 | GSE125666 | GEO
Project description:Loss of function of CDKN2A/B, also known as INK4/ARF [encoding for p16INK4A, p15INK4B, and p14ARF (mouse p19Arf)]), confers susceptibility to cancers, whereas its up-regulation during organismal aging provokes cellular senescence and tissue degenerative disorders. To better understand molecular regulation of the locus, we knocked P2A-mCherry into the C-terminus of p16INK4A, and this construct faithfully recapitulated the endogenous transcription. Using this reporter cell line, we performed a noncoding tiling pooled screening targeting open chromatin regions spanning the approximately 500-kb region in the topological associated domain that includes p16INK4A. In both Cas9- and dCas9-KRAB–mediated screenings, we identified a 42-bp DNA sequence within exon 1β of the ARF gene, as the repressive element controlling p16INK4A expression. Chromatin conformation capture indicated that inactivating this element abolished the physical interaction between p15INK4B and ARF, thereby abolishing p16INK4A repression. This study has revealed a new mechanism of transcriptional regulation of p16INK4A by long-range chromatin interaction.
2019-12-17 | GSE125841 | GEO
Project description:Investigation of whole genome gene expression level changes in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel. Whole genome gene expression level changes have been compared in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel.
2012-09-21 | GSE41026 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE41026: Expression analysis of HepG2, HepG2-slug and HepG2-slug on Matrigel GSE41027: Chip-chip from HepG2 cells and HepG2 cells with slug overexpression Refer to individual Series
2012-09-21 | E-GEOD-41028 | biostudies-arrayexpress
Project description:Investigation of whole genome gene expression level changes in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel. Whole genome gene expression level changes have been compared in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel. Roche NimbleGen micro-array analysis was employed to assess global genome expression in HepG2 in regular culture, HepG2-slug in regular culture and HepG2-slug on Matrigel. The results demonstrated that the up-regulated genes and the down-regulated genes increased significantly when HepG2-slug cells with VM forming ablity were cultured on Matrigel and formed VM.
2012-09-21 | E-GEOD-41026 | biostudies-arrayexpress
Project description:Studies of the zinc finger transcription factors Slug and Snail have largely focused on their important role in modulating epithelial-mesenchymal transition during embryonic development and tumor progression. However, these transcription factors also appear to regulate local inflammation. In previous studies, we showed that Slug knockout mice were resistant to sunburn, an acute cutaneous inflammatory response, compared to wild type mice. In the present studies, we used Slug knockout, chimeric Slug knockout/wild type, conditional Slug knockout, and Slug transgenic mice to study the role of Slug in ultraviolet radiation (UVR)-induced cutaneous inflammation. We demonstrated, using immunohistochemistry, in vivo imaging, and neutrophil migration studies, that it was Slug expression in the epidermis rather than in neutrophils that modulated the UVR response. Microarray analysis indicated that this modulation was effected by the production of epidermal cytokines, including CCL3, CCL4, oncostatin, and interleukin-1β, that recruited neutrophils to UVR-exposed skin. The pattern of pro-inflammatory gene regulation by Slug suggested a central role for NF-κB in mediating gene induction. Immunohistochemical analysis of UVR-induced NF-κB activation demonstrated reduced activation in Slug knockout and enhanced activation in Slug transgenic epidermis. Slug thus appears to modulate NF-κB activation in response to UVR.
2016-08-27 | GSE86107 | GEO