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Genome-wide maps of Gata6 in primary mouse keratinocytes

ABSTRACT: In adult K14Î?NLef1 mouse, the overexpression of â??NLef1, a Ã?-catenin dominat negative, in basal keratinocytes leads to the conversion of hair follicles into multilayered epithelial cysts and ectopic sebaceous gland. â??NLef1 transcriptional activity led to Gata6 overexpression in the pilosebaceous unit in transgenic mice. To uncover direct target genes of Gata6 we performed ChIP-Seq experiments in primary mouse keratinocytes. Examination of Gata6 genomic targets in mouse primary keratinocytes

ORGANISM(S): Mus musculus

SUBMITTER: Giacomo Donati

PROVIDER: E-GEOD-62607 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Wounding induces dedifferentiation of epidermal Gata6<sup>+</sup> cells and acquisition of stem cell properties.

Donati Giacomo G Rognoni Emanuel E Hiratsuka Toru T Liakath-Ali Kifayathullah K Hoste Esther E Kar Gozde G Kayikci Melis M Russell Roslin R Kretzschmar Kai K Mulder Klaas W KW Teichmann Sarah A SA Watt Fiona M FM

Nature cell biology 20170515 6

The epidermis is maintained by multiple stem cell populations whose progeny differentiate along diverse, and spatially distinct, lineages. Here we show that the transcription factor Gata6 controls the identity of the previously uncharacterized sebaceous duct (SD) lineage and identify the Gata6 downstream transcription factor network that specifies a lineage switch between sebocytes and SD cells. During wound healing differentiated Gata6<sup>+</sup> cells migrate from the SD into the interfollicu ...[more]

PMID: 28504705

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Genome-wide maps of Gata6 in primary mouse keratinocytes

Project description:In adult K14ΔNLef1 mouse, the overexpression of ∆NLef1, a ß-catenin dominat negative, in basal keratinocytes leads to the conversion of hair follicles into multilayered epithelial cysts and ectopic sebaceous gland. ∆NLef1 transcriptional activity led to Gata6 overexpression in the pilosebaceous unit in transgenic mice. To uncover direct target genes of Gata6 we performed ChIP-Seq experiments in primary mouse keratinocytes.

2017-05-16 | GSE62607 | GEO

Epidermal overexpression of âNLef1 leads to deregulation of epidermal stem cell fate.

Project description:In adult K14ÎNLef1 mouse, the overexpression of âNLef1, a B-catenin dominat negative, in basal keratinocytes leads to the conversion of hair follicles into multilayered epithelial cysts and ectopic sebaceous gland. To uncover in vivo changes in gene expression associated to âNLef1 activity, we compared the expression profiles of unfractionated keratinocytes in wild type and K14ÎNLef1 transgenic mice. Cells were collected from 9.5 week old mice, when the hair follicle are in the resting (telogen) phase of the hair growth cycle. At this stage the âNLef1 phenotype is not yet evident enabling us to detect early molecular events. We compared the expression profiles of unfractionated keratinocytes in wild type and K14ÎNLef1 transgenic 9.5 week old mice. Three biological replicates for each cell population were analyzed.

2017-05-16 | E-GEOD-62603 | biostudies-arrayexpress

Genome-wide maps of ΔNLef1 in primary mouse keratinocytes

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Transcription profiling of Lgr6+ keratinocyte populations in the epidermis and hair follicle

Project description:RNA sequencing was performed on sorted populations of Lgr6-positive and Lgr6-negative keratinocytes from the interfollicular epidermis and the hair follicle/sebaceous gland, in order to determine the compartment-specific expression signatures of Lgr6+ progenitor cells.

2015-10-22 | E-MTAB-3533 | biostudies-arrayexpress

Gata6 network regulates epidermal junctional zone cell fate.

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2017-05-16 | E-GEOD-62608 | biostudies-arrayexpress

Epidermal overexpression of ∆NLef1 leads to deregulation of epidermal stem cell fate.

Project description:In adult K14ΔNLef1 mouse, the overexpression of ∆NLef1, a B-catenin dominat negative, in basal keratinocytes leads to the conversion of hair follicles into multilayered epithelial cysts and ectopic sebaceous gland. To uncover in vivo changes in gene expression associated to ∆NLef1 activity, we compared the expression profiles of unfractionated keratinocytes in wild type and K14ΔNLef1 transgenic mice. Cells were collected from 9.5 week old mice, when the hair follicle are in the resting (telogen) phase of the hair growth cycle. At this stage the ∆NLef1 phenotype is not yet evident enabling us to detect early molecular events.

2017-05-16 | GSE62603 | GEO

Study of stem cells and progenitor cells in K14 Snail mice

Project description:Expression of the EMT-inducing transcription factor Snail is enhanced in different human cancers. To investigate the in vivo role of Snail during progression of epithelial cancer, we used a mouse model with skin-specific overexpression of Snail. Snail transgenic mice spontaneously developed distinct histological subtypes of skin cancer, such as basal cell carcinoma, squamous cell carcinoma and sebaceous gland carcinoma. Development of sebaceous gland carcinomas strongly correlated with the direct and complete repression of Blimp-1, a central regulator of sebocyte homeostasis. Snail expression in keratinocyte stem cells significantly promotes their proliferation associated with an activated FoxM1 gene expression signature, resulting in a larger pool of Mts24-marked progenitor cells. Furthermore, primary keratinocytes expressing Snail showed increased survival and strong resistance to genotoxic stress. Snail expression in a skin-specific p53-null background resulted in accelerated formation of spontaneous tumours and enhanced metastasis. Our data demonstrate that in vivo expression of Snail results in de novo epithelial carcinogenesis by allowing enhanced survival, expansion of the cancer stem cell pool with accumulated DNA damage, a block in terminal differentiation and increased proliferation rates of tumour-initiating cells. A total of 8 samples were analysed. CD34 samples contain sorted pooled keratinocytes from 11 different mice, and Mts24 samples contain sorted pooled keratinocytes from 9 different mice. Samples with negative fractions are considered to be the control samples to samples with positive fractions.

2014-07-09 | E-GEOD-48859 | biostudies-arrayexpress

Epidermal overexpression of ∆NLef1 leads to deregulation of epidermal stem cell fate

Project description:In adult K14ΔNLef1 mouse, the overexpression of ∆NLef1, a B-catenin dominat negative, in basal keratinocytes leads to the conversion of hair follicles into multilayered epithelial cysts and ectopic sebaceous gland. To uncover in vivo changes in gene expression associated to ΔNLef1 activity, we compared the expression profiles of basal keratinocytes (Itga6+) and bulge stem cells (cd34+/itga6+) in wild type and K14ΔNLef1 transgenic mice. Cells were collected from 9.5 week old mice, when the hair follicle are in the resting (telogen) phase of the hair growth cycle. At this stage the ΔNLef1 phenotype is not yet evident enabling us to detect early molecular events.

2019-03-08 | GSE118073 | GEO

Expression data from mouse oral keratinocyte

Project description:Keratinocytes are the major constituent of epithelial cells at mucosal surfaces and skin, which cover organs, internal cavities and the body. Traditionally, keratinocytes have been considered as an inert component of the multilayered epithelium to protect the subepithelial compartments from the pathogenic microorganisms, toxic stimuli and physical trauma. However, accumulated researches of the airway, gastrointestinal tract and skin have demonstrated that keratinocytes function in the development of the immune system, promotion of pathologic inflammation and even impose diverse decisions on immune cells. We used microarrays to detail the global gene expression of oral keratinocyte during oral adaptive immune response. Oral keratinocyte were collected at three time points (control, 48h and 96h) in oral adaptive immune response for RNA extraction and hybridization on Affymetrix microarrays

2011-03-19 | E-GEOD-28035 | biostudies-arrayexpress

Hypoxia reveals the new function of Foxn1 in keratinocytes antioxidant defense system

Project description:Skin exposed to environmental threats including injuries and oxidative stress developed an efficient but not fully recognized systems of repair and antioxidant protection. In this project we provide evidence that Foxn1 in keratinocytes regulates elements of electron transport chain and participates in thioredoxin system (Txn2, Txnrd3, Srxn1) induction, particularly under hypoxic environment. It is shown that Foxn1 in keratinocytes upregulate glutathione thioredoxin reductase 3 (Txnrd3) protein, and high levels of Txnrd3 mRNA were detected in injured skin of Foxn1+/+ mice. It also shown that Foxn1 strongly downregulate CCN2 protein participating in reconstruction of the epidermis after injury. As in vitro assay revealed that Foxn1 controls keratinocytes migration stimulating it under normoxia and suppressing under hypoxia. Keratinocytes overexpressing Foxn1 and exposed to hypoxia showed reduced ability to promote angiogenesis by downregulation of Vegfa. In conclusion, this study showed a new mechanism in which Foxn1, along with hypoxia, participates in the activation of antioxidant defense and controls functional properties of keratinocytes.

2022-07-08 | PXD031125 | Pride

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