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E-GEOD-77997

ABSTRACT: Quantitative Analysis of Notch mutant (Notch1&2-null, Psen1&2-null, RBPjk-null) and wild-type hair follicle transcriptomes by NGS

PROVIDER: E-GEOD-77997 | ExpressionAtlas | 2019-05-14

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-77997-analysis-methods.tsv	Tabular
	E-GEOD-77997-analytics.tsv	Tabular
	E-GEOD-77997-analytics.tsv.undecorated	Tabular
	E-GEOD-77997-analytics.tsv.undecorated.unrounded	Tabular
	E-GEOD-77997-analytics.tsv.unrounded	Tabular

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Transcription profiling of Gata3 conditional knock out mice to investigate epidermis and hair follicle differentiation

Project description:Transcriptome analysis on Gata3 conditional knock out murine hair follicles. Background. The transcription factor Gata3 is critically involved in epidermis and hair follicle differentiation. Yet, little is known about how Gata3 co-ordinates stem cell lineage determination in skin, which processes are mostly implicated and how Gata3 differentially regulates distinct cell populations within the hair follicle. Here, we describe a conditional Gata3-/- mouse (K14-Gata3-/-) in which Gata3 is specifically deleted in epidermis and hair follicles. Principal findings. K14-Gata3-/- mice show aberrant postnatal growth and development, delayed hair growth and maintenance, abnormal hair follicle organization and irregular pigmentation. After the first hair cycle, the germinative layer surrounding the dermal papilla was not restored; instead, proliferation was pronounced in basal epidermal cells. Transcriptome analysis of laser-dissected K14-Gata3-/- hair follicles as compared to wild type littermate controls, revealed mitosis, epithelial differentiation and the Notch, WNT and BMP signalling pathways to comprise significantly overrepresented processes. Conclusions. Subsequent elucidation of these pathways at the RNA and protein levels and physiologic endpoints shows that Gata3 integrates diverse signalling networks to regulate the balance between hair follicle and epidermal cell fates.

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Comparative study on seasonal hair follicle cycling by analysis of the transcriptomes from cashmere and milk goats

Project description:Guard hair and cashmere undercoat are developed from primary and secondary hair follicle, respectively. Little is known about the gene expression differences between primary and secondary hair follicle cycling. In this study, we obtained RNA-seq data from cashmere and milk goats grown at four different seasons. We studied the differentially expressed genes (DEGs) during the yearly hair follicle cycling, and between cashmere and milk goats. WNT, NOTCH, MAPK, BMP, TGFβ and Hedgehog signaling pathways were involved in hair follicle cycling in both cashmere and milk goat. However, Milk goat DEGs between different months were significantly more than cashmere goat DEGs, with the largest difference being identified in December. Some expression dynamics were confirmed by quantitative PCR and western blot, and immunohistochemistry. This study offers new information sources related to hair follicle cycling in milk and cashmere goats, which could be applicable to improve the wool production and quality.

2019-07-19 | GSE84947 | GEO

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