Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA312317 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR3175110_1.fastq.gz | Fastqsanger.gz | |||
| SRR3175110_2.fastq.gz | Fastqsanger.gz | |||
| SRR3175111_1.fastq.gz | Fastqsanger.gz | |||
| SRR3175111_2.fastq.gz | Fastqsanger.gz | |||
| SRR3175112_1.fastq.gz | Fastqsanger.gz |
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Project description:Quantitative Analysis of Notch mutant (Notch1&2-null, Psen1&2-null, RBPjk-null) and wild-type hair follicle transcriptomes by NGS
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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.
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Project description:The goal of this study was to compare the transcriptome between wild type strain of Listeria monocytogenes and delete nmlR mutant strain of L. monocytogenes using NGS. Method: Duplicate samples of rRNA depleted RNA from wild type and mutants were used to study transcriptomes by ion torrent platform. Transcriptomes of wild type and nmlR mutant were compared by EDGE-pro program. Result: Differential expression by EDGE-pro showed 74 genes with differential expressions between wild type and nmlR null mutant (46 genes were negatively regluated and 28 genes were positively regulated by NmlR). rRNA-depleted RNA samples from stationary phase wilde type and nmlR null mutant cultures were used to compare transcriptomes. Some affected genes from RNAseq result were selected for confirmation by quantitative reverse transcriptase PCR.
2016-07-01 | E-GEOD-70265 | biostudies-arrayexpress
Project description:The goals of this study is to test whether NICD presence protects the RBPjk-null Hair Follicles by altering gene expression via association with other DNA binding proteins at P3, just before the conversion to TSLP-producing keratin cysts. Methods: Skin samples were embedded in OCT. Sectioned at 20μm thickness. Dehydrated in EtOH, and equilibrated to Xylene before the LCM procedure. Laser capture was performed with Arcturus Veritas. Methods: ~100 hair follicles from Notch-null, PS-null, RBPjk-null and wild-type samples were pooled into 3 biological replicates for each genotype and subjected to RNA isolation followed by RNA-Seq. Conclusions: A total of 2047 genes were differentially expressed (�1.5 fold) in three or more biological replicates of Notch mutant hair follicles compared to wild-type controls (p-value<0.05). Unsupervised hierarchical clustering analysis failed to distinguish between the mutants.
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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.
2007-01-01 | E-MEXP-634 | biostudies-arrayexpress
Project description:Primary outcome(s): Comparison of the gene expression profile in hair follicle between cancer patients and healthy volunteer
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Project description:Background: Mutations in PRESENILIN 1 (PSEN1) which still produce a transcript encoding a full-length, but mutant protein are the most common cause of early-onset familial Alzheimer’s disease (EOfAD). The only frameshift mutations found in PSEN1 causes familial acne inversa (fAI) without EOfAD. The molecular consequences of heterozygosity for these mutations, and how they lead to completely different diseases, remains largely unexplored. Objective: To identify the similarities and differences of the effects of heterozygosity for mutations in psen1 causing EOfAD (T428del) or fAI (W233fs) on the brain transcriptome of young adult zebrafish. Methods: RNA sequencing was performed with high read depth on mRNA isolated from the brains of young adult (6 month old) zebrafish arising from a single family which contained either a single, heterozygous EOfAD-like or fAI-like mutation in the endogenous psen1 gene, and their wild type siblings. Results: Both mutations appeared to downregulate genes encoding the ribosomal subunits, and upregulated genes involved in inflammation. Genes involved in energy metabolism appeared to only be affected in EOfAD-like mutants, while genes involved in Notch, Wnt and neutrophin signalling pathways were only significantly altered by the fAI-like mutation. Further investigation of direct transcriptional targets of Notch revealed an apparent increase in Notch signalling. Conclusion: We observed both common, and distinct effects on transcriptomes of the heterozygous mutants compared to their wild type siblings. The distinct effects observed may shed light to how these mutations give rise to completely different diseases.
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Project description:Notch signaling is a core patterning module for vascular morphogenesis, which co-determines the sprouting behaviour of endothelial cells (ECs). Tight quantitative and temporal control of Notch activity is essential for vascular development, yet the details of Notch regulation in ECs are incompletely understood. We found that ubiquitin-specific peptidase 10 (USP10) interacted with the NOTCH1 intracellular domain (NICD1) to slow the ubiquitin-dependent turnover of this short-lived form of the activated NOTCH1 receptor. Accordingly, inactivation of USP10 reduced NICD1 abundance and stability, and diminished Notch-induced target gene expression in ECs. In mice, loss of endothelial Usp10 increased vessel sprouting and partially restored the patterning defects caused by ectopic expression of NICD1. Thus, USP10 functions as an NICD1 deubiquitinase, which fine-tunes endothelial Notch responses during angiogenic sprouting.
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Project description:Foxi3 is a transcription factor expressed in the hair follicle epithelium during development and postnatally. In this study we used a microarray analysis to indentify differentially expressed genes in Foxi3 null epithelium compared to Foxi3 wt epithelium. We used E15.5 stage as the earliest time point when the Foxi3 null hair phenotype bacame obvious, to find out the most early consequences of Foxi3 ablation.
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Project description:NOTCH1 is a transmembrane receptor that initiates the Notch signaling pathway involved in embryonic development and maintenance of adult tissue homeostasis. The extracellular part of NOTCH1 is composed largely of EGF-like domains (EGFs) many of which can be O-fucosylated by protein O-fucosyltransferase 1 (POFUT1). O-fucosylation of NOTCH1 is necessary for its function. The Notch pathway is deregulated in many cancers, and alteration of POFUT1 has been reported in some cancers. Using the Biomuta and COSMIC databases, we selected 9 NOTCH1 variants that could cause a change in O-fucosylation of key EGFs. Cell-based N1 signaling assays, Notch ligand-binding assays and cell surface N1 analysis were used to determine the effect of each mutation on Notch activation. Then mass spectral glycoproteomic site mapping was used to identify alterations in the O-fucosylation of EGFs containing the selected mutation. One of the variants had few effects, two lead to a gain of function (GOF) and six to a loss of function (LOF). Most GOF and LOF could be associated with a change in O-fucosylation. Finally, by comparing our results with known NOTCH1 alterations in cancers from which our mutations originated, we were able to establish a correlation between our results and the known GOF or LOF of NOTCH1 in these cancers. This study shows that point mutations in NOTCH1 can lead to alterations in O-fucosylation that deregulate the Notch pathway and be associated with cancer processes.
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