Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA174428 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Fragile X syndrome and tuberous sclerosis are genetic syndromes that both have a high rate of co-morbidity with autism spectrum disorders. Several lines of evidences suggest that these two monogenic disorders may converge at a molecular level through the dysfunction of activity-dependent synaptic plasticity. We utilized mouse models of these monogenic disorders to identify genome-wide transcriptional changes in cerebellum and blood and characterize the (dis-)similarity of their molecular signatures. Differentially expressed genes and enriched pathways were distinct for the two mouse models examined, with the exception of immune system related pathways. In the cerebellum of the Fmr1 knockout (Fmr1-KO) model, the neuroactive ligand receptor interaction pathway and gene sets associated with synaptic plasticity such as long term potentiation, gap junction, and axon guidance were the most significantly perturbed pathways. The phosphatidylinositol signaling pathway was significantly dysregulated in both blood and brain of Fmr1-KO mice. In both the blood and brain of the Tsc2 heterozygous mouse model, immune system related pathways, genes encoding ribosomal proteins, and glycolipid metabolism pathways were significantly perturbed. Our data suggest that distinct molecular pathways may be involved in autism spectrum disorders with known but different genetic causes, and that blood gene expression profiles of Fmr1-knockout and Tsc2+/- mice mirror some, but not all, of the perturbed molecular pathways in the brain. For the Fmr1-KO model, 10 mice, consisting of 5 KO and 5 WT mice, were profiled. Thus, 10 pairs of blood and cerebella samples were profiled. Likewise, for the Tsc+/- model, 3 transgenic and 3 WT mice were sacrificed and paired blood and cerebella samples were prepared for gene expression profiling. All samples were profiled using the Affymetrix Mouse Gene ST 1.0 ST arrays. Three factors—tissue (i.e. blood vs. cerebellum), treatment (i.e. knockout vs. wildtype), and genetic background (Fmr1-KO vs. Tsc2+/-)—were analyzed with analysis of variance (ANOVA). Subsequently, we compared blood and brain gene expression changes in Fmr1 and Tsc2 knockout mice models using WT littermates as controls using t-tests with unequal variances. The false discovery rate (FDR) was calculated using Storey and Tibshirani’s method.
2012-09-06 | E-GEOD-40630 | biostudies-arrayexpress
Project description:Fragile X syndrome and tuberous sclerosis are genetic syndromes that both have a high rate of comorbidity with autism spectrum disorder (ASD). Several lines of evidence suggest that these two monogenic disorders may converge at a molecular level through the dysfunction of activity-dependent synaptic plasticity. To explore the characteristics of transcriptomic changes in these monogenic disorders, we profiled genome-wide gene expression levels in cerebellum and blood from murine models of fragile X syndrome and tuberous sclerosis. Differentially expressed genes and enriched pathways were distinct for the two murine models examined, with the exception of immune response-related pathways. In the cerebellum of the Fmr1 knockout (Fmr1-KO) model, the neuroactive ligand receptor interaction pathway and gene sets associated with synaptic plasticity such as long-term potentiation, gap junction, and axon guidance were the most significantly perturbed pathways. The phosphatidylinositol signaling pathway was significantly dysregulated in both cerebellum and blood of Fmr1-KO mice. In Tsc2 heterozygous (+/−) mice, immune system-related pathways, genes encoding ribosomal proteins, and glycolipid metabolism pathways were significantly changed in both tissues. Our data suggest that distinct molecular pathways may be involved in ASD with known but different genetic causes and that blood gene expression profiles of Fmr1-KO and Tsc2+/− mice mirror some, but not all, of the perturbed molecular pathways in the brain.
2012-09-06 | GSE40630 | GEO
Project description:Fmr1 mutation results in autistic behaviors and the FMR1 KO mice model is one of the popular methods to study autism spectrum disorders. In this dataset, we include the expression data obtained from astrocytes isolated from cortex of control and FMR1-KO mice.
2017-11-30 | GSE99277 | GEO
Project description:Widespread RNA editing dysregulation in Autism Spectrum Disorders
| PRJNA421887 | ENA
Project description:Widespread RNA editing dysregulation in Autism Spectrum Disorders II
| PRJNA483174 | ENA
Project description:Specific and effective treatments for autism spectrum disorders (ASD) are lacking
due to a poor understanding of disease mechanisms. Here, we test the idea that
similarities between diverse ASD mouse models are caused by deficits in shared
molecular pathways at neuronal synapses. To do this, we leverage the availability
of multiple genetic models of ASD that exhibit shared synaptic and behavioral
deficits and use quantitative mass spectrometry with isobaric tandem mass tagging
(TMT) to compare their hippocampal synaptic proteomes. Comparative analyses of mouse models for Fragile X syndrome (Fmr1 knockout), cortical dysplasia focal epilepsy syndrome (Cntnap2 knockout), PTEN hamartoma tumor syndrome (Pten haploinsufficiency), ANKS1B syndrome (Anks1b haploinsufficiency), and idiopathic autism (BTBR+) revealed several common altered cellular and molecular pathways atthe synapse, including changes in oxidative phosphorylation, endocytosis, and Rho family small GTPase signaling. Functional validation of one of these aberrant pathways, Rac1 signaling, confirms that ANSK1B models display altered Rac1 activity counter to that observed in other models, as predicted by the bioinformatic analyses. Overall similarity analyses reveal clusters of synaptic profiles, which may form the basis for molecular subtypes that explain genetic heterogeneity in ASD despite a common clinical diagnosis. Our results suggest that ASD-linked susceptibility genes ultimately converge on common signaling pathways regulating synaptic function and propose that these points of convergence are key to understanding the human disease.
2023-05-03 | MSV000091848 | MassIVE
Project description:Widespread RNA editing dysregulation in Autism Spectrum Disorders [RNA-Seq]
| PRJNA421728 | ENA
Project description:Identification of transcript dysregulation in patients with Autism Spectrum Disorders
| PRJNA268178 | ENA
Project description:Widespread RNA editing dysregulation in Autism Spectrum Disorders [eCLIP-seq]
| PRJNA421898 | ENA
Project description:Fragile-X Syndrome (FXS) is a multi-organ disease leading to mental retardation, macro-orchidism in males, and premature ovarian insufficiency in female carriers. FXS is also a prominent monogenic disease associated with autism spectrum disorders (ASD). FXS is typically caused by the loss of FRAGILE X-MENTAL RETARDATION 1 (FMR1) expression, which encodes for the RNA-binding protein (RBP), FMR1 (or FMRP). We report the discovery of the RNA recognition elements (RREs), binding sites, and mRNA targets for wild-type and I304N mutant FMRP isoforms as well as its paralogs, FXR1 and FXR2. RRE frequency, ratio, and distribution determine target mRNA association with FMRP. Among highly-enriched targets, we identified many genes involved in ASD and demonstrate that FMRP can affect their protein levels in cell culture, mice, and human brain. Unexpectedly, we discovered that these targets are also dysregulated in Fmr1-/- mouse ovaries, showing signs of premature follicular overdevelopment. These results indicate that FMRP targets shared signaling pathways across different cellular contexts. As it is become increasingly appreciated that signaling pathways are important to FXS and ASD, our results here provide an invaluable molecular guide towards the pursuit of novel therapeutic targets for these devastating neurological disorders. The mRNA profile of RNA recovered from FLAG-antibody immunoprecipitated FMRP was compared to the mRNA profile of the starting lysate material.
2012-12-13 | E-GEOD-39504 | biostudies-arrayexpress