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The homing behaviors of hair follicle dermal cells and cell intermigration between hair follicle and perifollicular microenvironment

ABSTRACT: The homing behaviors of hair follicle dermal cells and cell intermigration between hair follicle and perifollicular microenvironment

PROVIDER: PRJNA860088 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20341015_1.fastq.gz	Fastqsanger.gz
	SRR20341015_2.fastq.gz	Fastqsanger.gz
	SRR20341016_1.fastq.gz	Fastqsanger.gz
	SRR20341016_2.fastq.gz	Fastqsanger.gz
	SRR20341017_1.fastq.gz	Fastqsanger.gz

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Gene expression profiling of adult hair follicle dermal stem cells and progeny, dermal sheath and dermal papilla cells

Project description:Here we have developed a novel FACS strategy to prospectively isolate hair follicle dermal stem cells, dermal sheath and dermal papilla cells from adult skin initiating synchronous hair follicle regeneration and identified Hic1 as a marker of hfDSCs and Rspondins as stimulators of hfDSCs and epithelial cells, and subsequently hair follicle regeneration

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The homing of exogenous hair follicle mesenchymal stem cells into hair follicle niches

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Î²-cateinin activation in hair follicle dermal sheath induces ectopic hair outgrowth and skin fibrosis

Project description:Dermal sheath (DS) shows potent hair inducing capability and high plasticity without leading to immuno rejection. A recent study showed a subset of DS cells, identified as hair follicle (HF) dermal stem cells, can be mobilized to regenerate DS, maintain/supply the cell number of dermal papilla (DP) and modulate hair type. However, it is unclear how Wnt/Î²-catenin signaling regulates DS cells behaviors. Here we report that activation of Î²-catenin in DS, to some extent, endows it with hair inducing ability, reprogramming HF epidermal cells to generate new outgrowth. The new formed dermal condensates (DC)/DP lying adjacent the outgrowth derives from DS and/or its progeny, and homeostasis of pre-existing HFs is disturbed. Additionally, progressive skin fibrosis is prominent in hypodermis, where the excessive activated fibroblasts at least partially originate from DS and/or its progeny. Gene expression analysis of purified DS cells revealed that 44% DC signature genes are regulated, most of which are up-regulated. We found elevated expression of several growth factors, including Noggin, Fgf7 and Fgf10, which were previously implicated in HF induction. In summary, we confirm the high plasticity of DS cells by in vivo assays and report a mechanism by which Wnt/Î²-catenin signaling controls DS cells behaviors. We prospectively isolated control and cÎex3 DS cells (YFP+ve CD34-ve ALP-ve ITGÎ±8-ve cells) from P15 dorsal skins by FACS.

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SKPs derive from hair follicle precursors and exhibit properties of adult dermal stem cells

Project description:Global expression analysis of neural crest-like skin-derived precursors (SKPs) and Sox2-positive follicle dermal cells that SKPs originate from. In spite of the remarkable regenerative capacity of mammalian skin, an adult dermal stem cell has not yet been identified. Here, we provide evidence that SKPs, multipotent neural crest-like skin-derived precursors, represent an adult dermal stem cell. When transplanted into adult skin, SKPs can reconstitute the adult dermis, contribute to dermal wound-healing, home to a hair follicle niche, and instruct epidermal cells to make hair follicles. Hair follicle-derived SKPs self-renew, maintain their multipotency, and serially reconstitute hair follicles. The endogenous origin of SKPs are Sox2-positive follicle dermal cells that share a similar global gene expression profile with SKPs. These endogenous cells home back to their follicle niche, induce hair follicle morphogenesis, and differentiate into neural and dermal progeny. Hair follicle-associated dermal cells will move out of their niche to contribute to dermal maintenance and wound-healing. These studies therefore identify a dermal stem cell, and provide a biological rationale for the presence of a multipotent precursor within adult dermis, findings with important therapeutic implications.

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Project description:The dermal sheath cup is the peribulbar component of the hair follicle dermal sheath, and has hair inductive potential similar to the dermal papilla. To characterize it in comparison with other mesenchymal follicle tissuesparts, we performed gene expression profiling of intact dermal sheath cups, which were separated from hair follicles by microdissection. Gene expression profiles of the dermal sheath cup, dermal papilla and upper dermal sheath were compared. We identified a dermal sheath cup signature composed of 32 upregulated genes, which included extracellular matrix components and BMP binding mollecules, while dermal papilla signature included a number of dermal papilla signature genes which had already reported. Analyses of upstream regulators showed that TGF- b1 is a putative regulator of these genes. These results suggest some of molecular mechanism that contributes to human dermal sheath cup properties, which could be useful for hair follicle bioengineering.

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β-cateinin activation in hair follicle dermal sheath induces ectopic hair outgrowth and skin fibrosis

Project description:Dermal sheath (DS) shows potent hair inducing capability and high plasticity without leading to immuno rejection. A recent study showed a subset of DS cells, identified as hair follicle (HF) dermal stem cells, can be mobilized to regenerate DS, maintain/supply the cell number of dermal papilla (DP) and modulate hair type. However, it is unclear how Wnt/β-catenin signaling regulates DS cells behaviors. Here we report that activation of β-catenin in DS, to some extent, endows it with hair inducing ability, reprogramming HF epidermal cells to generate new outgrowth. The new formed dermal condensates (DC)/DP lying adjacent the outgrowth derives from DS and/or its progeny, and homeostasis of pre-existing HFs is disturbed. Additionally, progressive skin fibrosis is prominent in hypodermis, where the excessive activated fibroblasts at least partially originate from DS and/or its progeny. Gene expression analysis of purified DS cells revealed that 44% DC signature genes are regulated, most of which are up-regulated. We found elevated expression of several growth factors, including Noggin, Fgf7 and Fgf10, which were previously implicated in HF induction. In summary, we confirm the high plasticity of DS cells by in vivo assays and report a mechanism by which Wnt/β-catenin signaling controls DS cells behaviors.

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