Astrocytes and neurons share brain region-specific transcriptional signatures
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA577914 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR10294102.fastq.gz | Fastqsanger.gz | |||
| SRR10294103.fastq.gz | Fastqsanger.gz | |||
| SRR10294104.fastq.gz | Fastqsanger.gz | |||
| SRR10294105.fastq.gz | Fastqsanger.gz | |||
| SRR10294106.fastq.gz | Fastqsanger.gz |
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Project description:Astrocytes and neurons share brain region-specific transcriptional signatures (RNAseq: Astrocytes)
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Project description:Neuronal cell diversity is essential to endow distinct brain regions with specific functions. During development, progenitors within these regions are characterised by specific gene expression programs, contributing to the generation of diversity in postmitotic neurons and glia. While the region-specific molecular diversity of neurons and astrocytes is increasingly understood, whether these cells share region-specific programs remains unknown. Here, we show that in the neocortex and thalamus, neurons and astrocytes express shared region-specific transcriptional and epigenetic signatures. These signatures not only distinguish cells across brain regions but are also detected across substructures within regions, such as distinct thalamic nuclei, where clonal analysis reveals the existence of common nucleus-specific progenitors for neurons and glia. Consistent with their shared molecular signature, regional specificity is maintained following astrocyte-to-neuron reprogramming. A detailed understanding of these regional-specific signatures may thus inform strategies for future cell-based brain repair.
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Project description:Neuronal cell diversity is essential to endow distinct brain regions with specific functions. During development, progenitors within these regions are characterised by specific gene expression programs, contributing to the generation of diversity in postmitotic neurons and glia. While the region-specific molecular diversity of neurons and astrocytes is increasingly understood, whether these cells share region-specific programs remains unknown. Here, we show that in the neocortex and thalamus, neurons and astrocytes express shared region-specific transcriptional and epigenetic signatures. These signatures not only distinguish cells across brain regions but are also detected across substructures within regions, such as distinct thalamic nuclei, where clonal analysis reveals the existence of common nucleus-specific progenitors for neurons and glia. Consistent with their shared molecular signature, regional specificity is maintained following astrocyte-to-neuron reprogramming. A detailed understanding of these regional-specific signatures may thus inform strategies for future cell-based brain repair.
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Project description:Astrocytes and neurons share brain region-specific transcriptional signatures (RNAseq: NeuronsP0)
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Project description:This SuperSeries is composed of the SubSeries listed below.
2021-05-18 | GSE138977 | GEO
Project description:Astroglial cells in the adult brain constitute a heterogeneous population endowed with region-specific properties. Recently, they have acquired greater relevance as active components of the adult neural stem cell (aNSC) niches. Astrocytes located in the vicinity of aNSC reservoirs are thought to regulate aNSC behaviour. We have compared the function of glial cells isolated from the postnatal and adult subventricular zone and hippocampus (two stem cell niches, where aNSCs self-renew and give rise to immature neurons), from the olfactory bulb (a neurogenic region where the immature neurons cease to proliferate and terminally differentiate) and from a non-stem and non-neurogenic area such as the ventral mesencephalon. Co-culture experiments demonstrate that subventricular zone glial cells secrete soluble signals that promote NSC self-renewing divisions. We used microarrays to detail the global gene expression of astroglial cells isolated from four different brain regions (olfactory bulb, ventral mesencephalon, hippocampus and subventricular zone) and identified up-regulated genes coding for secreted proteins in astrocytes from the subventricular zone. Primary astrocytes were cultured from four CD-1 mouse brain regions and cells were employed for RNA extraction and hybridization on Affymetrix microarrays. Primary tissue for the astrocyte cultures was dissected from four postnatal day 3 littermate pups. The tissue from the three pups was pooled in order to reduce individual differences of expression profiles.
2012-05-31 | E-GEOD-36456 | biostudies-arrayexpress
Project description:Neural cell diversity is essential to endow distinct brain regions with specific functions. During development, progenitors within these regions are characterized by specific gene expression programs, contributing to the generation of diversity in postmitotic neurons and astrocytes. While the region-specific molecular diversity of neurons and astrocytes is increasingly understood, whether these cells share region-specific programs remains unknown. Here, we show that in the neocortex and thalamus, neurons and astrocytes express shared region-specific transcriptional and epigenetic signatures. These signatures not only distinguish cells across these two brain regions but are also detected across substructures within regions, such as distinct thalamic nuclei, where clonal analysis reveals the existence of common nucleus-specific progenitors for neurons and astrocytes. Consistent with their shared molecular signature, regional specificity is maintained following astrocyte-to-neuron reprogramming. A detailed understanding of these regional-specific signatures may thus inform strategies for future cell-based brain repair.
| S-EPMC8026135 | biostudies-literature
Project description:Astroglial cells in the adult brain constitute a heterogeneous population endowed with region-specific properties. Recently, they have acquired greater relevance as active components of the adult neural stem cell (aNSC) niches. Astrocytes located in the vicinity of aNSC reservoirs are thought to regulate aNSC behaviour. We have compared the function of glial cells isolated from the postnatal and adult subventricular zone and hippocampus (two stem cell niches, where aNSCs self-renew and give rise to immature neurons), from the olfactory bulb (a neurogenic region where the immature neurons cease to proliferate and terminally differentiate) and from a non-stem and non-neurogenic area such as the ventral mesencephalon. Co-culture experiments demonstrate that subventricular zone glial cells secrete soluble signals that promote NSC self-renewing divisions. We used microarrays to detail the global gene expression of astroglial cells isolated from four different brain regions (olfactory bulb, ventral mesencephalon, hippocampus and subventricular zone) and identified up-regulated genes coding for secreted proteins in astrocytes from the subventricular zone.
2012-06-01 | GSE36456 | GEO
Project description:We used microarrays to compare the global programme of gene expression in primary cultures of neurons and astrocytes. These data sets were compared to the expression profiles of other tissues, including pancreatic islets, in order to identify a specific neuroendocrine program in pancreatic islets. Neurons and astrocytes were isolated from brain cortex and cultured in vitro for 7 and 20 days respectively. RNA was extracted and hybridized on Affymetrix microarrays. Two biological samples from neurons and astrocytes were analyzed.
2013-07-01 | E-GEOD-42607 | biostudies-arrayexpress
Project description:Aubert2005 - Interaction between astrocytes
and neurons on energy metabolism
Enocded non-curated model. Issues:
- Confusing equations A.41 and A.42
- Missing values for parameters Vv,0 and dHb,0
This model is described in the article:
Interaction between
astrocytes and neurons studied using a mathematical model of
compartmentalized energy metabolism.
Aubert A, Costalat R.
J. Cereb. Blood Flow Metab. 2005 Nov;
25(11): 1476-1490
Abstract:
Understanding cerebral energy metabolism in neurons and
astrocytes is necessary for the interpretation of functional
brain imaging data. It has been suggested that astrocytes can
provide lactate as an energy fuel to neurons, a process
referred to as astrocyte-neuron lactate shuttle (ANLS). Some
authors challenged this hypothesis, defending the classical
view that glucose is the major energy substrate of neurons, at
rest as well as in response to a stimulation. To test the ANLS
hypothesis from a theoretical point of view, we developed a
mathematical model of compartmentalized energy metabolism
between neurons and astrocytes, adopting hypotheses highly
unfavorable to ANLS. Simulation results can be divided between
two groups, depending on the relative neuron versus astrocyte
stimulation. If this ratio is low, ANLS is observed during all
the stimulus and poststimulus periods (continuous ANLS), but a
high ratio induces ANLS only at the beginning of the stimulus
and during the poststimulus period (triphasic behavior).
Finally, our results show that current experimental data on
lactate kinetics are compatible with the ANLS hypothesis, and
that it is essential to assess the neuronal and astrocytic
NADH/NAD+ ratio changes to test the ANLS hypothesis.
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2015-02-25 | MODEL1411210000 | BioModels