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Plucked scalp hair follicle samples are useful RNA sources for mRNA analysis of genodermatosis-associated genes

ABSTRACT: Plucked scalp hair follicle samples are useful RNA sources for mRNA analysis of genodermatosis-associated genes

PROVIDER: PRJNA929300 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23268739_1.fastq.gz	Fastqsanger.gz
	SRR23268739_2.fastq.gz	Fastqsanger.gz
	SRR23268740_1.fastq.gz	Fastqsanger.gz
	SRR23268740_2.fastq.gz	Fastqsanger.gz
	SRR23268741_1.fastq.gz	Fastqsanger.gz

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Bald scalp retains hair follicle stem cells but lacks CD200-rich and CD34-positive hair follicle progenitor cells

Project description:Androgenetic alopecia (AGA) or common baldness results from a marked decrease in hair follicle size. This miniaturization may be related to loss of hair follicle stem or progenitor cells. To test this hypothesis, we analyzed bald and non-bald scalp from the same individuals for the presence of hair follicle stem and progenitor cells using flow cytometry to quantitate cells expressing CYTOKERATIN 15 (KRT15), CD200, CD34 and ALPHA-6-INTEGRIN (ITGA6). High levels of KRT15 expression correlated with stem cell properties of small cell size and quiescence. Cells with the highest level of KRT15 expression were maintained in bald scalp; however, distinct populations of CD200high ITGA6high cells and CD34-positive cells were markedly diminished. Consistent with a progenitor cell phenotype, the diminished populations localized closely to the stem-cell rich bulge area but were larger and more proliferative than the bulge stem cells. In functional assays, analogous CD200 high /Itga6 high cells from murine hair follicles were multipotent and generated new hair follicles in skin reconstitution assays. These findings suggest that a defect in stem cell activation plays a role in the pathogenesis of AGA. This SuperSeries is composed of the SubSeries listed below.

2011-01-12 | GSE21569 | GEO

Expression data obtained from primary dermal papilla cell cultures and human hair follicle organ culture from occipital scalp

Project description:In this dataset, we include the expression data obtained from primary dermal papilla cell cultures and human hair follicle organ culture from occipital scalp

2016-05-01 | GSE72894 | GEO

mRNA profiling of human plucked hair follicle

Project description:mRNA profiling of human plucked hair follicle from frontal and occipital scalp

| EGAD00010001501 | EGA

miRNA profiling of human plucked hair follicle

Project description:miRNA profiling of human plucked hair follicle from frontal and occipital scalp

| EGAD00010001500 | EGA

Less invasive diagnostics for cancer using hair follicle

Project description:Primary outcome(s): Comparison of the gene expression profile in hair follicle between cancer patients and healthy volunteer

| 2628246 | ecrin-mdr-crc

Plucked scalp hair follicle samples are useful RNA sources for mRNA analysis of genodermatosis-associated genes

Project description:Using RNA samples extracted from plucked hair follicles and skin samples, we conducted comprehensive RNA sequencing and evaluated expression levels of 347 genes causative of genodermatoses.

2023-06-19 | GSE224010 | GEO

Human CD200+CD49+ hair follicle keratinocytes versus CD200-CD49+ keratinocytes

Project description:Human hair follicles from normal areas of the scalp were disassociated to single cells, sorted and tested by microarrray To compare the expression of human CD200+ CD49+ hair follicle keratinocytes versus CD200-CD49+ keratinocytes

2011-01-12 | GSE21567 | GEO

Global profiling of human hair follicle scalp dermal papilla cells using Affymetrix microarrays

Project description:Dermal papilla cells isolated from the human hair follicle are capable of inducing hair growth in recipient epithelia. However, demonstrating disparity from rodent dermal papilla, human cells lose this inductive competance immediately upon growth in culture under normal growth conditions. We grew dermal papilla cells in hanging drop cultures that are morphologically akin to intact dermal papilla, and found that by enhancing the environment for aggregation, we could restore the inductive capacity of human dermal papilla cells in culture. The underlying genes that regulate the inductive potential of dermal papilla cells is not well understood, and we sought to use global profiling to identify key genes and pathways related to inductive competance within dermal papilla cells. We used Affymetrix microarrays to profile human dermal papilla cells in both hair inducing, and non-hair inducing states. Affymetrix microarrays were used to to perform profiling of human dermal papilla cells, both as intact tissues (freshly isolated from scalp), and at several stages in subsequent two dimensional culture; cell explant outgrowths (p0), cells at passage 1 (p1), passage 3 (p3) and passage 5 (p5). RNA was isolated from cultured cells 72 hours after feeding. Cells at passage 3 were also grown in hanging drops to form dermal spheroids, that were used for RNA collection 48 hours after establishment. All experiments were performed using tissue from three biological replicates (#D5, D6, D7),

2013-10-20 | E-GEOD-44765 | biostudies-arrayexpress

Bald scalp retains hair follicle stem cells but lacks CD200-rich and CD34-positive hair follicle progenitor cells

Project description:Bald scalp retains hair follicle stem cells but lacks CD200-rich and CD34-positive hair follicle progenitor cells

| PRJNA127003 | ENA

Prostaglandin D2 Inhibits Hair Growth and Is Elevated in Bald Scalp of Men with Androgenetic Alopecia

Project description:Testosterone is necessary for the development of male pattern baldness, known as androgenetic alopecia (AGA); yet the mechanisms for decreased hair growth in this disorder are unclear. Here, we show that prostaglandin D2 synthase (PTGDS) is elevated at the mRNA and protein levels in bald scalp compared to haired scalp of men with AGA. The product of PTGDS enzyme activity, prostaglandin D2 (PGD2), is similarly elevated in bald scalp. During normal follicle cycling in mice Ptgds and PGD2 levels increase immediately preceding the regression phase, suggesting an inhibitory effect on hair growth. We show that PGD2 inhibits hair growth in explanted human hair follicles and when applied topically to mice. Hair growth inhibition requires the PGD2 receptor G protein-coupled receptor 44 (GPR44), but not the prostaglandin D2 receptor 1(PTGDR). Furthermore, we find that a transgenic mouse, K14-Ptgs2, which targets prostaglandin-endoperoxide synthase 2 expression to the skin, demonstrates elevated levels of PGD2 in the skin and develops alopecia, follicular miniaturization and sebaceous gland hyperplasia, which are all hallmarks of human AGA. These results define PGD2 as an inhibitor of hair growth in AGA and suggest the PGD2-GPR44 pathway as a potential target for treatment. 5 individuals with Androgenetic Alopecia were biopsied at both their haired and bald scalp for mRNA purification and microarray (total 10 arrays)

2012-03-26 | E-GEOD-36169 | biostudies-arrayexpress

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