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SRP178051
Mus musculus
19 Downloadable Samples
Illumina HiSeq 2000
Description
How G4C2 repeat expansions in C9orf72 cause frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) is not understood. Here, we report the first mouse model to express poly(PR), a dipeptide repeat protein synthesized from expanded G4C2 repeats. Expression of GFP-(PR)50 throughout the mouse brain yielded progressive brain atrophy, neuron5 loss, loss of poly(PR)-positive cells and gliosis, culminating in motor and memory impairments. We found that poly(PR) bound DNA, localized to heterochromatin, and caused abnormal histone methylation, lamin invaginations, decreases in HP1a expression, and disruptions of HP1a liquid phases. These aberrations of histone methylation, lamins and HP1a, which regulate heterochromatin structure and gene expression, were accompanied by repetitive element10 expression and double-stranded RNA accumulation. Thus, we uncover new mechanisms by which poly(PR) contributes to c9FTD/ALS pathogenesis. Overall design: Examination of transcriptome profiles using RNA-seq on 3 month old mice expressing PR and GR polypetides with an AAV expression vector. The Poly(PR) analysis consisted of 7 mice expressing AAV-GFP-(PR)50 and 4 AAV-GFP harvest-matched controls. The Poly(GR) analysis consisted of 4 mice expressing AAV-GFP-(GR)100 and 4 AAV-GFP harvest-matched controls.
Publication Title
Heterochromatin anomalies and double-stranded RNA accumulation underlie <i>C9orf72</i> poly(PR) toxicity.
Sample Metadata Fields
Sex, Age, Cell line, Subject
View Samples- Danio rerio
- 11 Downloadable Samples
Affymetrix Zebrafish Genome Array (zebrafish)
Description
Amputation of heart tissue followed by regeneration of the heart. Samples were taken at 0 hpa (hours post-amputation), 6 hpa, 12 hpa, 24 hpa, 3 dpa and 5 dpa.
Publication Title
Simplet controls cell proliferation and gene transcription during zebrafish caudal fin regeneration.
Sample Metadata Fields
Specimen part, Time
View Samples- Caenorhabditis elegans
- 2 Downloadable Samples
- Illumina HiSeq 2000
Description
C. elegans transcriptome component of "Genome and transcriptome of the zoonotic hookworm Ancylostoma ceylanicum"
Publication Title
The genome and transcriptome of the zoonotic hookworm Ancylostoma ceylanicum identify infection-specific gene families.
Sample Metadata Fields
Cell line
View Samples- Drosophila melanogaster
- 52 Downloadable Samples
- Illumina HiSeq 2000
Description
We investigate the biological effects of radiation using Drosophila Melanogaster as a model organism, focusing on gene expression and lifespan analysis to determine the effect of different radiation doses. Our results support a threshold effect in response to radiation: no effect on lifespan and no permanent effect on gene expression is seen at doses below 10,000 Roentgens. Overall design: Adult male Drosophila were irradiated 2 days after eclosion, with one of 6 radiation doses: 10; 1,000; 5,000; 10,000; 20,000 Roentgens. Samples were taken at 3 time points (2, 10 and 20 days post-irradiation).
Publication Title
Drosophila melanogaster show a threshold effect in response to radiation.
Sample Metadata Fields
Specimen part, Subject
View Samples- Drosophila melanogaster
- 39 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Expression data from four different lifespan-extending conditions: dietary restriction in two different genetic backgrounds (canton-s and a yw, w1118 combination), sir2 overexpression and p53 knockdown (+/-).
Publication Title
Comparative transcriptional profiling identifies takeout as a gene that regulates life span.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Caenorhabditis elegans
- 12 Downloadable Samples
- Illumina HiSeq 2000
Description
Understanding genome and gene function in a whole organism requires us to fully comprehend the life cycle and the physiology of the organism in question. Caenorhabditis elegans XX animals are hermaphrodites that exhaust their sperm after 3 d of egg-laying. Even though C. elegans can live for many days after cessation of egg-laying, the molecular physiology of this state has not been as intensely studied as other parts of the life cycle, despite documented changes in behavior and metabolism. To study the effects of sperm depletion and aging of C. elegans during the first 6 d of adulthood, we measured the transcriptomes of first-day adult hermaphrodites and sixth-day sperm-depleted adults, and, at the same time points, mutant fog-2(lf) worms that have a feminized germline phenotype. We found that we could separate the effects of biological aging from sperm depletion. For a large subset of genes, young adult fog-2(lf) animals had the same gene expression changes as sperm-depleted sixth-day wild-type hermaphrodites, and these genes did not change expression when fog-2(lf) females reached the sixth day of adulthood. Taken together, this indicates that changing sperm status causes a change in the internal state of the worm, which we call the female-like state. Our data provide a high-quality picture of the changes that happen in global gene expression throughout the period of early aging in the worm. Overall design: 4 conditions; 3 samples per condition. Young adults are 1d old adults without visible eggs. Aged adults are 6th day adults, post-egg-laying. The fog-2 mutant strain used was JK574
Publication Title
The <i>Caenorhabditis elegans</i> Female-Like State: Decoupling the Transcriptomic Effects of Aging and Sperm Status.
Sample Metadata Fields
Cell line, Subject
View Samples- Drosophila melanogaster
- 9 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Feeding resveratrol to Drosophila melanogaster extends lifespan. Studies of microarray show similarities between calorie/dietary restriction and resveratrol on both a gene expression and biological pathway level.
Publication Title
Comparative transcriptional pathway bioinformatic analysis of dietary restriction, Sir2, p53 and resveratrol life span extension in Drosophila.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Mus musculus
- 48 Downloadable Samples
- Illumina mouseRef-8 v1.1 expression beadchip
Description
A/J mice are genetically predisposed to spontaneous and/or chemically-induced lung tumors while C57BL/6J (B6) mice are resistant. This genetic disparity provides a unique scenario to identify molecular mechanisms associated with the lung response to welding fume at the transcriptome level.
Publication Title
Response of the mouse lung transcriptome to welding fume: effects of stainless and mild steel fumes on lung gene expression in A/J and C57BL/6J mice.
Sample Metadata Fields
Treatment
View Samples- Rattus norvegicus
- 55 Downloadable Samples
- Affymetrix Rat Gene 2.0 ST Array (ragene20st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Transcriptome and metabolome analysis of liver and kidneys of rats chronically fed NK603 Roundup-tolerant genetically modified maize.
Sample Metadata Fields
Sex, Specimen part
View Samples- Rattus norvegicus
- 52 Downloadable Samples
- IlluminaHiSeq2000
Description
We utilized RNA-Seq on rat Schwann (S16) cells to determine global gene expression. This information was generated as part of a larger effort to characterize cis-regulatory elements and global gene expression within Schwann cells. To achieve this, we generated RPKM values across two independent biological replicates. This dataset was also used to predict cis-regulatory element function on genes following CRISPR knockout studies. Overall design: Performed two technical replicates of RNA-Seq on two independent biological replicates of S16 cells
Publication Title
A genome-wide assessment of conserved SNP alleles reveals a panel of regulatory SNPs relevant to the peripheral nerve.
Sample Metadata Fields
No sample metadata fields
View Samples