Filters
Technology
Platform
SRP056477
Homo sapiens
53 Downloadable Samples
IlluminaHiSeq2000
Description
Increasing evidence suggests that defective RNA processing contributes to the development of amyotrophic lateral sclerosis (ALS). This may be especially true for ALS caused by a repeat expansion in C9orf72 (c9ALS), in which the accumulation of RNA foci and dipeptide-repeat proteins are expected to modify RNA metabolism. We report extensive alternative splicing (AS) and alternative polyadenylation (APA) defects in the cerebellum of c9ALS cases (8,224 AS, 1,437 APA), including changes in ALS-associated genes (e.g. ATXN2 and FUS), and cases of sporadic ALS (sALS; 2,229 AS, 716 APA). Furthermore, hnRNPH and other RNA-binding proteins are predicted as potential regulators of cassette exon AS events for both c9ALS and sALS. Co-expression and gene-association network analyses of gene expression and AS data revealed divergent pathways associated with c9ALS and sALS. Overall design: Examination transcriptiome profiles in c9orf72-associated ALS, sporadic ALS and healthy control
Publication Title
Repetitive element transcripts are elevated in the brain of C9orf72 ALS/FTLD patients.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 23 Downloadable Samples
- Illumina HiSeq 2000, Ion Torrent Proton
Description
Noncoding expansions of a hexanucleotide repeat (GGGGCC) in the C9orf72 gene are the most common cause of familial amyotrophic lateral sclerosis and frontotemporal dementia. Here we report transgenic mice carrying a bacterial artificial chromosome (BAC) containing the full human C9orf72 gene with either a normal allele (15 repeats) or disease-associated expansion (~100–1,000 repeats; C9-BACexp). C9-BACexp mice displayed pathologic features seen in C9orf72 expansion patients, including widespread RNA foci and repeat-associated non-ATG (RAN) translated dipeptides, which were suppressed by antisense oligonucleotides targeting human C9orf72. Nucleolin distribution was altered, supporting that either C9orf72 transcripts or RAN dipeptides promote nucleolar dysfunction. Despite early and widespread production of RNA foci and RAN dipeptides in C9-BACexp mice, behavioral abnormalities and neurodegeneration were not observed even at advanced ages, supporting the hypothesis that RNA foci and RAN dipeptides occur presymptomatically and are not sufficient to drive neurodegeneration in mice at levels seen in patients. Overall design: To compare the RNA Seq profiles from the cortex and spinal cord of transgenic mice expressing unexpanded human C9orf72 (F08, n=4), expanded human C9orf72 (F112, n=3/4), and nontransgenic controls (n=4).
Publication Title
C9orf72 BAC Transgenic Mice Display Typical Pathologic Features of ALS/FTD.
Sample Metadata Fields
Specimen part, Cell line, Subject
View Samples- Mus musculus
- 10 Downloadable Samples
- Illumina HiSeq 2500
Description
AD drug discovery has rarely been addressed in the context of aging even though sporadic AD accounts for 99% of the cases. Phenotypic screens based upon old age-associated brain toxicities were used to develop the potent AD drug candidate J147. Here, we hypothesized that J147 would be effective against both brain aging and AD-associated pathology in rapidly aging SAMP8 mice, a model for early sporadic AD. An inclusive and integrative multi-omics approach was used to investigate protein expression, RNA expression, metabolite levels as well as cognition in old and young SAMP8 mice. J147 not only reduced the cognitive deficits and associated metabolic changes observed in old SAMP8 mice, it restored the levels of multiple markers of AD, vascular pathology, synaptic function, and inflammation to those approaching the young phenotype. Our data show that a drug candidate selected upon the basis of preventing old age-related brain toxicities also reduces AD-associated pathology. Overall design: The aim of this project was to investigate whether the AD drug candidate J147 protects SAMP8 mice from aging and AD-associated pathology and to assay the associated metabolic changes. Three three-month old male SAMP8 mice were fed with vehicle diet and three three-month old male SAMP8 mice with J147 diet until they reached ten months old. Four three-month old male SAMP8 mice were used as young control group.
Publication Title
A comprehensive multiomics approach toward understanding the relationship between aging and dementia.
Sample Metadata Fields
No sample metadata fields
View Samples- 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- Mus musculus
- 4 Downloadable Samples
- Illumina HiSeq 4000
Description
We report the application of single-cell-based RNA sequencing technology for high-throughput profiling of mice abdominal aortic aneurysm cell type dependent transcriptome. This study provides insight in the expression profile of aortic tissue macrophages in pathological conditions related to cardiovascular diseases. Overall design: Examination of cell specific transcriptomes in three pooled AAA single cell suspensions from three pooled Apolipoprotein deficient mice perfused for 28 days with angiotensin II
Publication Title
Macrophage-derived netrin-1 promotes abdominal aortic aneurysm formation by activating MMP3 in vascular smooth muscle cells.
Sample Metadata Fields
Disease, Treatment, Subject
View Samples- Mus musculus
- 6 Downloadable Samples
Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
Impact of mmu-miR-337-3p on the global gene expression in murine hepatoblasts.
Publication Title
MicroRNA-337-3p controls hepatobiliary gene expression and transcriptional dynamics during hepatic cell differentiation.
Sample Metadata Fields
Specimen part
View Samples- Danio rerio
- 4 Downloadable Samples
- IonTorrentProton
Description
Background: In this study we reveal a previously undescribed role of the HACE1 (HECT domain and Ankyrin repeat Containing E3 ubiquitin-protein ligase 1) tumor suppressor protein in normal vertebrate heart development using the zebrafish (Danio rerio) model. We examined the link between the cardiac phenotypes associated with hace1 loss of function to the expression of the Rho small family GTPase, rac1, which is a known target of HACE1 and promotes ROS production via its interaction with NADPH oxidase holoenzymes. We examined expression changes induced by knock-down of hace1 in zebrafish at 48 hpf, the stage when heart abnormalities are observed. This was done by collecting duplicate samples of control and hace1 morphant embryos and performing RNA sequencing on them. Conclusions: Our study demonstrates that HACE1 is critical in the normal development and proper function of the heart via a ROS-dependent mechanism. Overall design: 2 samples of control and hace1 morphant zebrafish embryos at 48 hpf were analyzed
Publication Title
hace1 Influences zebrafish cardiac development via ROS-dependent mechanisms.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 5 Downloadable Samples
- IonTorrentProton
Description
We report the generation of CRISPR-dCas9 DNA methyltransferases to mediate targeted DNA methylation. Using the dCas9-BFP-DNMT3A and dCas9-BFP-DNMT3B methyltransferases, we have demonstrated that these two methyltransferase can mediate targeted methylation in three human genes tested: uPA, TGFBR3, and CDKN2A in human HEK293T cells. We also showed that these methyltransferases could mediate gene inhibition. Overall design: five samples co-transfected with five uPA sgRNAs and each of the four dCas9 fusions, or control transfection with pUC19 plasmid
Publication Title
Genome-wide determination of on-target and off-target characteristics for RNA-guided DNA methylation by dCas9 methyltransferases.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 21 Downloadable Samples
- Affymetrix Clariom S Human array (clariomshuman)
Description
Escherichia coli release Extracellular Vesicles (EVs) which carry diverse molecular cargo. Pathogenic E.coli EVs contain virulence factors which assist during infection in the host in different mechanisms.The RNA cargo of E.coli EVs has not been assessed in their effect in the host. We used microarray data to asses and compare the global response of bladder cells to EV-RNA from pathogenic E.coli (Uropathogenic UPEC 536) and non-pathogenic E. coli (probiotic Nissle 1917)
Publication Title
Effect of the Extracellular Vesicle RNA Cargo From Uropathogenic <i>Escherichia coli</i> on Bladder Cells.
Sample Metadata Fields
Disease
View Samples- Mus musculus
- 16 Downloadable Samples
- Illumina HiSeq 2500
Description
Microglia are brain immune cells that constantly survey their environment to maintain homeostasis. Enhanced microglial reactivity and proliferation are typical hallmarks of neurodegenerative diseases. Whether specific disease-linked microglial subsets exist during the entire course of neurodegeneration, including the recovery phase, is currently unclear. Taking a single-cell RNA-sequencing approach in a susceptibility gene-free model of nerve injury, we identified a microglial subpopulation that upon acute neurodegeneration shares a conserved gene regulatory profile compared to previously reported chronic and destructive neurodegeneration transgenic mouse models. Our data also revealed rapid shifts in gene regulation that defined microglial subsets at peak and resolution of neurodegeneration. Finally, our discovery of a unique transient microglial subpopulation at the onset of recovery may provide novel targets for modulating microglia-mediated restoration of brain health. Overall design: scRNA-Seq was performed on microglial cells isolated from the ipsilateral and contralateral ventral pons of CX3CR1GFP/wt mice that underwent unilateral facial nerve axotomy at 12 weeks of age. The contralateral ventral pons of un-operated 12-week-old CX3CR1GFP/wt was used as baseline control (Day 0 post nerve transection) for the analysis. Three replicates were used per time point (Day 0, 7 and 30 post axotomy). mCEL-Seq2 protocol was used for single cell sequencing (Hashimshony et al. 2016, Herman et al. 2018).
Publication Title
Unique microglia recovery population revealed by single-cell RNAseq following neurodegeneration.
Sample Metadata Fields
Age, Specimen part, Cell line, Subject
View Samples