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E-MEXP-2126
Drosophila melanogaster
6 Downloadable Samples
Affymetrix Drosophila Genome Array (drosgenome1)
Description
The study of the role of Drosophila Ada2b SAGA histone acetyltransferase component at early pupal stage (P4)
Publication Title
Genes of the ecdysone biosynthesis pathway are regulated by the dATAC histone acetyltransferase complex in Drosophila.
Sample Metadata Fields
Sex, Age, Time
View Samples- Mus musculus
- 2 Downloadable Samples
Illumina HiSeq 2000
Description
Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goals of this study was to obtain the trasncriptome of DGCR8_KO mESCs to compare it with the transcriptome of WT mESCs (deposit separately). Overall design: mRNA profiles of DGCR8_KO mouse embryonic stem cells were generated by deep sequencing, in duplicate, using Illumina HiSeq2000.
Publication Title
Noncanonical function of DGCR8 controls mESC exit from pluripotency.
Sample Metadata Fields
Specimen part, Cell line, Subject
View Samples- Mus musculus
- 24 Downloadable Samples
- Illumina Genome Analyzer IIx, Illumina HiSeq 2000
Description
Transcriptional dysregulation is an early feature of Huntington''s disease (HD). We observed gene-specific changes in H3K4me3 at transcriptionally repressed promoters in R6/2 mouse and human HD brain. Genome-wide analysis showed a novel chromatin signature for this mark. Reducing the levels of the H3K4 demethylase SMCX/Jarid1c in primary neurons reversed down-regulation of key neuronal genes caused by mutant Huntingtin (Htt) expression. Finally, reduction of SMCX/Jarid1c in primary neurons from BACHD mice or the single Jarid1 in a Drosophila HD model was protective. Therefore, targeting this epigenetic signature may be an effective strategy to ameliorate the consequences of HD. Overall design: mRNA-seq in wild type and R6/2 cortex and striatum at 8 and 12 weeks.
Publication Title
Targeting H3K4 trimethylation in Huntington disease.
Sample Metadata Fields
Age, Specimen part, Subject
View Samples- Homo sapiens
- 15 Downloadable Samples
Description
Aim: to perform a genome-wide investigation of chromatin landscape and gene expression patterns downstream of calcium and kinase signaling in Jurkat T cells. Methods: PMA and ionomycin were used to activate the calcium and kinase signalling networks involved in T cell activation. Global gene expression was measured using RNA-seq, whilst ATAC-seq was used to probe chromatin landscape following 3 hours of stimulation with PMA, ionomycin or both. All experiments were performed in triplicate. For RNA-seq all sequencing was performed using paired-end sequencing on an Illumina HiSeq2500 instrument. For ATAC-seq sequencing was performed using a HiSeq 1500. Results: we mapped approximately 60 million reads per sample for ATAC-seq, and 22 million reads per library for RNA-seq. Overall we identified 57,825 transcripts and 19,763 ATAC-seq peaks. We identifiead 1648 genes whose expression was increased by 2-fold or more by at least one treatment in comparison to untreated cells. Similarly, we identified 3972 ATAC peaks that were induced by at least 2-fold by treatment in comparison to untreated cells. Conclusions: we found that chromatin landscape was associated with gene expression downstream of calcium and kinase signaling in Jurkat cells. Further to this we found that activation of the full complement of TCR-responsive genes is dependent upon both PMA and ionomycin, and amounts to more than just the sum of both. Overall design: RNA-sequencing and ATAC-sequencing were performed after 3 hours of treatment with either PMA, ionomycin or co-treatment with PMA and ionomycin.
Publication Title
Integration of Kinase and Calcium Signaling at the Level of Chromatin Underlies Inducible Gene Activation in T Cells.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus, Homo sapiens
- 22 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Identification of a novel PPARβ/δ/miR-21-3p axis in UV-induced skin inflammation.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Mus musculus
- 16 Downloadable Samples
Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Although excessive exposure to UV is widely recognized as a major factor leading to skin perturbations and cancer, the complex mechanisms underlying inflammatory skin disorders resulting from UV exposure remain incompletely characterized. The nuclear hormone receptor PPAR/ is known to control cutaneous repair and UV-induced cancer development. Here, we describe a novel PPAR/-dependent molecular cascade involving TGF-1 and miR-21-3p, which is activated in the epidermis in response to UV exposure. We establish that the passenger miRNA miR-21-3p, that we identify as a novel UV-induced miRNA in the epidermis, plays a pro-inflammatory function in keratinocytes, and that its high level of expression in human skin is associated with psoriasis and squamous cell carcinomas. Finally, we provide evidence that inhibition of miR-21-3p reduces UV-induced cutaneous inflammation in ex vivo human skin biopsies, thereby underlining the clinical relevance of miRNA-based topical therapies for cutaneous disorders.
Publication Title
Identification of a novel PPARβ/δ/miR-21-3p axis in UV-induced skin inflammation.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Although excessive exposure to UV is widely recognized as a major factor leading to skin perturbations and cancer, the complex mechanisms underlying inflammatory skin disorders resulting from UV exposure remain incompletely characterized. The nuclear hormone receptor PPAR/ is known to control cutaneous repair and UV-induced cancer development. Here, we describe a novel PPAR/-dependent molecular cascade involving TGF-1 and miR-21-3p, which is activated in the epidermis in response to UV exposure. We establish that the passenger miRNA miR-21-3p, that we identify as a novel UV-induced miRNA in the epidermis, plays a pro-inflammatory function in keratinocytes, and that its high level of expression in human skin is associated with psoriasis and squamous cell carcinomas. Finally, we provide evidence that inhibition of miR-21-3p reduces UV-induced cutaneous inflammation in ex vivo human skin biopsies, thereby underlining the clinical relevance of miRNA-based topical therapies for cutaneous disorders.
Publication Title
Identification of a novel PPARβ/δ/miR-21-3p axis in UV-induced skin inflammation.
Sample Metadata Fields
Cell line
View Samples- Hordeum vulgare
- 18 Downloadable Samples
- Affymetrix Barley Genome Array (barley1)
Description
Fusarium Head Blight susceptible barley variety, Morex, was infected with deoxynivalenol production deficient mutant strain (GZT40) and wild type stains (Z3639) of Fusarium graminearum. The RNA was sampled at 48 and 96 hours after inoculation. and was used hybridize to Barley_1 GeneChip. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Jayanand Boddu. The equivalent experiment is BB52 at PLEXdb.]
Publication Title
Transcriptome analysis of trichothecene-induced gene expression in barley.
Sample Metadata Fields
Specimen part
View Samples- Arabidopsis thaliana
- 12 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Transcriptome changes 1h or 4h following DELLA stabilisation in microdissected fully proliferating Arabidopsis leaves
Publication Title
Gibberellins and DELLAs: central nodes in growth regulatory networks.
Sample Metadata Fields
Specimen part, Treatment, Time
View Samples- Hordeum vulgare
- 44 Downloadable Samples
- Affymetrix Barley Genome Array (barley1)
Description
Barley cv. Morex inoculated with Fusarium graminearum (isolate Butte 86) or water (mock). Sampled at 24, 48, 72, 96 and 144 hours after treatment. ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Jayanand Boddu. The equivalent experiment is BB9 at PLEXdb.]
Publication Title
Transcriptome analysis of the barley-Fusarium graminearum interaction.
Sample Metadata Fields
Specimen part, Time
View Samples