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E-GEOD-54356

ABSTRACT: Gene regulation in denervated hairy skin of the adult rat

OTHER RELATED OMICS DATASETS IN: PRJNA238507

PROVIDER: E-GEOD-54356 | ExpressionAtlas | 2015-07-31

REPOSITORIES: ExpressionAtlas

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Dataset's files

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			Action	DRS
	E-GEOD-54356-analysis-methods.tsv	Tabular
	E-GEOD-54356-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-54356-configuration.xml	Xml
	E-GEOD-54356-percentile-ranks.tsv	Tabular
	E-GEOD-54356.condensed-sdrf.tsv	Tabular

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Project description:Gene regulation in denervated hairy skin of the adult rat

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Gene regulation in denervated hairy skin of the adult rat

Project description:This study aimed to quantify the regulation of transcripts in the hairy skin of the back of adult rats in the condition of loss of sensory and autonomic (sympathetic) innervation (i.e., denervated). Denervated skin has reduced wound healing capacity, reduced proliferation of epidermal progenitor cells, and also expresses factors that regulate ingrowth of sensory and sympathetic axons from neighboring regions of innervated skin. It was expected that this quantification f transcript regulation would offer insight into the general and specific mechanisms that may contribute to these important biological processes.

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Skin-type-dependent development of murine mechanosensory neurons

Project description:Mechanosensory neurons innervating the skin underlie our sense of touch. Fast-conducting, rapidly adapting mechanoreceptors innervating glabrous (non-hairy) skin form Meissner corpuscles, while in hairy skin, they associate with hair follicles, forming longitudinal lanceolate endings. How mechanoreceptors develop axonal endings appropriate for their skin targets is unknown. We report that mechanoreceptor morphologies across different skin regions are indistinguishable during early development but diverge post-natally, in parallel with skin maturation. Neurons terminating along the glabrous and hairy skin border exhibit hybrid morphologies, forming both Meissner corpuscles and lanceolate endings. Additionally, molecular profiles of neonatal glabrous and hairy skin-innervating neurons largely overlap. In mouse mutants with ectopic glabrous skin, mechanosensory neurons form end-organs appropriate for the altered skin type. Finally, BMP5 and BMP7 are enriched in glabrous skin, and signaling through type I bone morphogenetic protein (BMP) receptors in neurons is critical for Meissner corpuscle morphology. Thus, mechanoreceptor morphogenesis is flexibly instructed by target tissues.

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Comparison of epithelial cells from various epithelia and hair follicle stem cells [microarray]

Project description:The potency of an adult stem cell is restricted to certain lineages during embryonic life, in response to a specific microenvironment (the niche) and it is maintained for life. Lineage restriction is considered immutable. We have investigated if adult stem cells isolated from different epithelia could change fate by exposing them to a hairy skin niche. We have demonstrated that clonogenic stem cells restricted to a single epithelial lineage and cultured from various Tp63-expressing tissues e.g, the bladder the oral mucous, the oesophagus or the thymus can acquire new functionality. When exposed to a hair skin microenvironment, these stem cells acquire the capacity to generate hair follicles and sebaceous glands, thus behaving like bona fide hairy skin multipotent stem cells. Genome wide-screen analysis has demonstrated that the stem cells express transcription factors typical of hair follicle differentiation, even though they continue to express some of the genes linked to their origin. This increase in potency demonstrates that lineage restriction is not immutable.

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Comparison of epithelial cells from various epithelia and hair follicle stem cells

Project description:The potency of an adult stem cell is restricted to certain lineages during embryonic life, in response to a specific microenvironment (the niche) and it is maintained for life. Lineage restriction is considered immutable. We have investigated if adult stem cells isolated from different epithelia could change fate by exposing them to a hairy skin niche. We have demonstrated that clonogenic stem cells restricted to a single epithelial lineage and cultured from various Tp63-expressing tissues e.g, the bladder, the vagina, or the thymus can acquire new functionality. When exposed to a hair skin microenvironment, these stem cells acquire the capacity to generate hair follicles and sebaceous glands, thus behaving like bona fide hairy skin multipotent stem cells. Genome wide-screen analysis has demonstrated that the stem cells express transcription factors typical of hair follicle differentiation, even though they continue to express some of the genes linked to their origin. This increase in potency demonstrates that lineage restriction is not immutable.

2020-09-17 | GSE116717 | GEO

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