GEO DataSets

Analysis of skin of deltaNB-cateninER transgenics following the activation of beta-catenin for up to 7 days. Onset and duration of beta-catenin activation in deltaNB-cateninER transgenics controlled by 4-hydroxytamoxifen. Results provide insight into how beta-catenin induces hair follicle growth.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 strain, 3 time sets

Platform:

GPL339

Series:

GSE1579

16 Samples

Download data

(Submitter supplied) Expression of deltaNB-cateninER allows the time and duration of B-catenin activation to be controlled precisely through the application of 4OHT. We have shown that B-catenin activation in adult mouse epidermis stimulates de novo hair follicles and the formation of a new bulge and melanocyte niche. We utilize Affymetrix Mouse Genome 430A 2.0 oligonucleotide arrays to investigate the differential regulation of RNA in skin from 7 week old female deltaNB-cateninER transgenic mice following 0, 1, or 7 days B-catenin activation in the epidermis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS1560

Platform:

GPL339

16 Samples

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(Submitter supplied) Mammalian epidermis consists of three self-renewing compartments: the hair follicle, sebaceous gland and interfollicular epidermis. We generated knock-in alleles of murine Lgr6, a close relative to the Lgr5 stem cell gene. Lgr6 was expressed in the earliest embryonic hair placodes. In adult hair follicles, Lgr6+ cells resided in a previously uncharacterized region directly above the follicle bulge. They expressed none of the known bulge stem cell markers. Prenatal Lgr6+ cells established the hair follicle, sebaceous gland and interfollicular epidermis. Postnatally, Lgr6+ cells generated sebaceous gland and interfollicular epidermis, while contribution to hair lineages gradually diminished with age. Adult Lgr6+ cells executed long-term wound repair, including the formation of new hair follicles. We conclude that Lgr6 marks the most primitive epidermal stem cell.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL4134

2 Samples

Download data: TXT

(Submitter supplied) We developed a Tet-inducible system to express deltaNp63alpha isoform under the control of keratin 5 promoter. Transgenic mice, which were Bigenic (BG) developed a severe skin phenotype with abnormal keratinocyte differentiation and defects in hair follicle development and cycling. Skin samples from transgenic animals and wild type animals were analyzed for global transcriptome changes.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL

(Submitter supplied) Hair follicle formation depends on reciprocal epidermal-dermal interactions and occurs during skin development, but not in adult life. This suggests that the properties of dermal fibroblasts change during postnatal development. To examine this, we used a PdgfraEGFP mouse line to isolate GFP-positive fibroblasts from neonatal skin, adult telogen and anagen skin and adult skin in which ectopic hair follicles had been induced (EF skin) by transgenic epidermal activation of beta-catenin. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

24 Samples

Download data: CEL, TXT

(Submitter supplied) Clonogenic keratinocyte stem cells isolated from the bulge area of human telogen follicles were co-cultured with dermal papilla cells in a transwell system. RNA was isolated from stem cells for different periods of time (day 0, 1, 2, and 5) after co-culture with DP and analyzed for changes in gene expression using Genechip microarrays. Keywords = epithelial stem cells Keywords = DP Keywords = co-culture Keywords: other

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS687

Platform:

GPL8300

3 Samples

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Analysis of dermal papilla (DP) induced epithelial stem cell differentiation. Keratinocyte stem cells from bulge area of telogen hair follicle co-cultured with DP over a 5 day period.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 3 time sets

Platform:

GPL8300

Series:

GSE1470

3 Samples

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(Submitter supplied) The vitamin D receptor (VDR) regulates cell proliferation and differentiation including epidermal keratinocytes by modulating transcription of its target genes. We are investigating the role of VDR in epidermal stem cells and their progenies in the regeneration process of epidermis and hair in the skin. VDR null mice are utilized in which VDR is specifically deleted in keratin 14 (K14) expressing keratinocytes by Cre-lox strategy. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

2 Samples

Download data: IDAT, TXT

(Submitter supplied) To assess if Hedgehog (Hh) responding cells in the skin have a unique expression profile, isolated keratinocytes that express the Hh response gene Gli1 were collected by FACS and their gene expression was compared to sorted CD34-expressing cells from the middle bulge region of the hair follicle and to cells from the interfollicular epidermis (IFE) by hybridization of isolated RNA to gene expression microarrays.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

8 Samples

Download data: TXT

(Submitter supplied) Different types of hair follicles can be found in the skin of mice. It is believed that the signals that control hair follicle differentiation arise from cells in a structure called the dermal papilla. Understanding the nature of those signals is of interest for the biology of the normal tissue. We have developed a technique for isolation of dermal cells by enzymatic digestion of intact skin. We have identified two subpopulations of cells that can be separated by FACS. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

9 Samples

Download data: CEL, CHP

(Submitter supplied) Notch1 deficient hair matrix keratinocytes have lower mitotic rates, resulting in smaller follicles with fewer cells. In addition, the ratio of melanocytes to keratinocytes is greatly reduced. Microarray was performed to study downstream mechanism of Notch1-deficiency Keywords: genetic modification

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS2848

Platform:

GPL1261

6 Samples

Download data: CEL

Analysis of Notch1-deficient hair follicles from the skin of transgenic animals. Results provide insight into the molecular mechanisms underlying the lowered mitotic index and increased apoptosis observed in Notch1-deficient hair follicles.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 other, 2 strain sets

Platform:

GPL1261

Series:

GSE6867

6 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

12 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) β-catenin signaling is required for hair follicle development, but it is unknown whether it is sufficient to activate expression of hair follicle genes in embryonic skin. To address this we profiled gene expression in epidermis from E15.5 KRT14-Cre Ctnnb1(Ex3)fl/+ embryos carrying an activating mutation in epithelial beta-catenin, and control littermate embryos. Keywords: Genetic modification

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL, CHP, EXP, XLS

(Submitter supplied) β-catenin signaling is required for hair follicle development, but it is unknown whether it is sufficient to activate expression of hair follicle genes in embryonic skin. To address this we profiled gene expression in dermis from E15.5 KRT14-Cre Ctnnb1(Ex3)fl/+ embryos carrying an activating mutation in epithelial beta-catenin, and control littermate embryos. Keywords: Genetic modification

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL, CHP, EXP, XLS

(Submitter supplied) β-catenin signaling is required for hair follicle development, but it is unknown whether it is sufficient to activate expression of hair follicle genes in embryonic skin. To address this we profiled gene expression in skin dissected from E14.5 KRT14-Cre Ctnnb1(Ex3)fl/+ embryos carrying an activating mutation in epithelial beta-catenin, and control littermate embryos. Keywords: Genetic modification

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

4 Samples

Download data: CEL, CHP, EXP, XLS

(Submitter supplied) 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. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL6247

20 Samples

Download data: CEL

(Submitter supplied) 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. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18694

20 Samples

Download data: TXT

(Submitter supplied) The human hair follicle bulge is an important niche for keratinocyte stem cells (KSC). Elucidation of human bulge cell biology could be facilitated by analysis of global gene expression profiles and identification of unique cell surface markers. The lack of distinctive bulge morphology in human hair follicles has hampered studies of bulge cells and KSC. In this study, we determined the distribution of label-retaining cells to carefully define the human anagen bulge. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS1672

Platform:

GPL96

16 Samples

Download data: CEL

Comparison of outer root sheath (ORS) cells of the hair follicle bulge with other defined ORS cell subpopulations within the follicle. Results provide insight into the biological distinctiveness of hair follicle bulge cells, suggesting the bulge is a repository for keratinocyte stem cells (KSCs).

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 5 cell type, 2 tissue sets

Platform:

GPL96

Series:

GSE3419

16 Samples

Download data: CEL