GSE127846 FMRP cTag CLIP from mouse CA1 pyramidal neurons

Contributors : Kirsty Sawicka ; Caryn R Hale ; Robert B Darnell ; Jennifer C DarnellSeries Type : OtherOrganism : Mus musculusLoss of the neuronal RNA binding protein FMRP causes Fragile X Syndrome (FXS), the most common cause of inherited intellectual disability, yet it is unknown which brain regions and cell types within them contribute to disease pathophysiology. We used conditional tagging of FMRP and CLIP (cTag FMRP CLIP) to examine FMRP targets specifically in CA1 hippocampal neurons, a critical cell type for learning and memory known to have altered synaptic function in FXS. Integrating this data with analysis of ribosome-bound transcripts from the same neuronal population revealed CA1-enriched binding of autism-relevant mRNAs, and unexpected CA1-specific regulation of transcripts encoding circadian proteins.
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Other Mus musculus Source Type: research

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RNA-binding proteins (RNA-BPs) play critical roles in development and disease to regulate gene expression. However, genome-wide identification of their targets in primary human cells has been challenging. Here, we applied a modified CLIP-seq strategy to identify genome-wide targets of the FMRP translational regulator 1 (FMR1), a brain-enriched RNA-BP, whose deficiency leads to Fragile X Syndrome (FXS), the most prevalent inherited intellectual disability. We identified FMR1 targets in human dorsal and ventral forebrain neural progenitors and excitatory and inhibitory neurons differentiated from human pluripotent stem cells...
Source: Genome Research - Category: Genetics & Stem Cells Authors: Tags: RESEARCH Source Type: research
(NIH/Eunice Kennedy Shriver National Institute of Child Health and Human Development) Researchers have developed a test to measure the expressive language skills of people with Fragile X syndrome, a genetic disorder that may result in intellectual disability, cognitive impairment and symptoms of autism spectrum disorder. Expressive language refers to the use of words to convey meaning to others. The work was funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development, part of the National Institutes of Health.
Source: EurekAlert! - Social and Behavioral Science - Category: International Medicine & Public Health Source Type: news
AbstractBackgroundThe evaluation of treatment efficacy for individuals with fragile X syndrome (FXS) or intellectual disability (ID) more generally has been hampered by the lack of adequate outcome measures. We evaluated expressive language sampling (ELS) as a procedure for generating outcome measures for treatment research in FXS. We addressed: (a) feasibility, (b) practice effects over two administrations, (c) test-retest reliability over the repeated administrations, and (d) construct validity. We addressed these issues for the full sample as well as for subgroups defined by age, IQ, and ASD status.MethodsParticipants w...
Source: Journal of Neurodevelopmental Disorders - Category: Neurology Source Type: research
(University of California - Davis Health) Expressive language sampling yielded five language-related outcome measures that may be useful for treatment studies in intellectual disabilities, especially fragile X syndrome. The measures were generally valid and reliable across the range of ages, IQs and autism symptom severity of participants. According to the study, led by UC Davis researchers and funded by NIH, the measures are also functional in supporting treatments that can improve language, providing far reaching benefits for individuals with intellectual disabilities.
Source: EurekAlert! - Social and Behavioral Science - Category: International Medicine & Public Health Source Type: news
RNA-binding proteins (RNA-BPs) play critical roles in development and disease to regulate gene expression. However, genome-wide identification of their targets in primary human cells has been challenging. Here, we applied a modified CLIP-seq strategy to identify genome-wide targets of the FMRP translational regulator 1 (FMR1), a brain-enriched RNA-BP, whose deficiency leads to Fragile X Syndrome (FXS), the most prevalent inherited intellectual disability. We identified FMR1 targets in human dorsal and ventral forebrain neural progenitors and excitatory and inhibitory neurons differentiated from human pluripotent stem cells...
Source: Genome Research - Category: Genetics & Stem Cells Authors: Tags: RESEARCH Source Type: research
Fragile X Syndrome (FXS) is the most common x-linked monogenic cause of Intellectual Disability (ID) and Autism Spectrum Disorder (ASD). Taking care of children with ID is challenging and overwhelming due to the multiple facets of caregiving. This scoping review aimed at summarizing the qualitative literature on the experiences of families living with FXS, identify key themes and determine the gaps in the extant literature. We conducted a literature search in May 2019 using four databases; PubMed, Web of Science, African-Wide-Information, and Scopus. The keywords used in our search strategy were associated with caregivers,...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
This study examined trajectories of daily living skills, behavior problems, body mass index (BMI), and health conditions spanning nearly a decade in adolescents and adults with fragile X syndrome (N = 134; age range at study end = 19-49 years), examining influences of sex and autism spectrum disorder (ASD) symptoms. Hierarchical linear modeling revealed early increases in daily living skills, with decreases at older ages. Behavior problems became less severe over time, with some increases at older ages. Individuals gained weight and had increasing health problems over time. Fewer ASD sympto...
Source: Journal of Autism and Developmental Disorders - Category: Psychiatry Authors: Tags: J Autism Dev Disord Source Type: research
CONCLUSION: Repeat expansion and methylation-specific TP-PCR is practical, effective and inexpensive for the diagnosis of FXS, especially in high-risk populations of individuals with ID of undetermined aetiology. PMID: 31989181 [PubMed - as supplied by publisher]
Source: Singapore Medical Journal - Category: General Medicine Authors: Tags: Singapore Med J Source Type: research
This study is a rare report on FXS from Africa and illustrates the case scenario of implementing genetic medicine for a neurogenetic condition in a rural setting.
Source: Genes - Category: Genetics & Stem Cells Authors: Tags: Article Source Type: research
Abstract Fragile X syndrome (FXS), the most common form of inherited intellectual disability and autism, results from the loss of fragile X mental retardation protein (FMRP). We have recently identified a direct interaction of FMRP with voltage-gated Ca2+ channels that modulates neurotransmitter release. In the present study we used a combination of optophysiological tools to investigate the impact of FMRP on the targeting of voltage-gated Ca2+ channels to the active zones in neuronal presynaptic terminals. We monitored Ca2+ transients at synaptic boutons of dorsal root ganglion (DRG) neurons using the genetically...
Source: Neurobiology of Disease - Category: Neurology Authors: Tags: Neurobiol Dis Source Type: research
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