Nurr1 orchestrates claustrum development and functionality
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1213827 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR32065326_1.fastq.gz | Fastqsanger.gz | |||
| SRR32065326_2.fastq.gz | Fastqsanger.gz | |||
| SRR32065327_1.fastq.gz | Fastqsanger.gz | |||
| SRR32065327_2.fastq.gz | Fastqsanger.gz |
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Project description:Claustrum is the part of the forebrain known to be most widely interconnected tissue with almost all global regions. It is believed to be involved in coordinating multiple cognitive behaviors including consciousness formation. However, little is known about the molecular mechanisms underlying its development and involvement in behavioral control. Here we show that Nurr1 (Nr4a2) is the key transcription factor orchestrating claustral morphogenesis, functional connectivity and thus behaviors. Nurr1 deficient claustral cells aberrantly migrate into insular cortex, shaping claustrum into an abnormal wing-like structure, and ectopically turn on insular cortex genetic program. Accordingly, functional connectivity of the claustrum is not properly formed and relevant behaviors are dysregulated in Nurr1 deficient mice. We show that Nurr1 regulates claustral neuron positioning by suppressing G-protein signaling.
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Project description:Nurr1 (Nr4a2, nuclear receptor subfamily 4 group A member 2) is needed for the development of ventral midbrain dopaminergic neurons, and has been associated with Parkinson's disease. We used mice where the Nurr1 gene is ablated by tamoxifen treatment selectively in dopaminergic neurons. As a control, we used tamoxifen-treated mice where Nurr1 is not ablated. By laser microdissection of neurons selected by their TH1 (Th1l, TH1-like homolog) gene expression, we selected dopaminergic neurons for RNA extraction and high-throughput mRNA sequencing, in order to identify genes regulated by Nurr1. We found the main functional category of Nurr1-regulated genes are the nuclear-encoded mitochondrial genes.
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Project description:The transcription factor nurr1 plays a pivotal role in the development and maintenance of neurotransmitter phenotype in midbrain dopamine neurons. Conversely, decreased nurr1 expression is associated with a number of dopamine-related CNS disorders, including Parkinson’s disease and drug addiction. In order to better understand the nature of nurr1-responsive genes and their potential roles in dopamine neuron differentiation and survival, we used a neural cellular background in which to generate a number of stable clonal lines with graded nurr1 gene expression that approximated that seen in DA cell-rich human substantia nigra. Gene expression profiling data from these nurr1-expressing clonal lines were validated by quantitative RT-PCR and subjected to bioinformatic analyses. The present study identified a large number of nurr1-responsive genes and demonstrated the potential importance of concentration-dependent nurr1 effects in the differential regulation of distinct nurr1 target genes and biological pathways. These data support the promise of nurr1-based CNS therapeutics for the neuroprotection and/or functional restoration of DA neurons.
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Project description:The transcription factor nurr1 plays a pivotal role in the development and maintenance of neurotransmitter phenotype in midbrain dopamine neurons. Conversely, decreased nurr1 expression is associated with a number of dopamine-related CNS disorders, including Parkinson’s disease and drug addiction. In order to better understand the nature of nurr1-responsive genes and their potential roles in dopamine neuron differentiation and survival, we used a neural cellular background in which to generate a number of stable clonal lines with graded nurr1 gene expression that approximated that seen in DA cell-rich human substantia nigra. Gene expression profiling data from these nurr1-expressing clonal lines were validated by quantitative RT-PCR and subjected to bioinformatic analyses. The present study identified a large number of nurr1-responsive genes and demonstrated the potential importance of concentration-dependent nurr1 effects in the differential regulation of distinct nurr1 target genes and biological pathways. These data support the promise of nurr1-based CNS therapeutics for the neuroprotection and/or functional restoration of DA neurons. Total RNA obtained from nurr1-overexpressing SKNAS neuroblastoma clonal cell lines (SKNAS_E & SKNAS_G) compared to empty vector transfected control (SKNAS_C)
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