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Gene expression analysis in the adult carotid body stem cell niche

ABSTRACT: The carotid body (CB) is a peripheral chemoreceptor organ that suffers a profound angiogenic and neurogenic process in response to hypoxemia, to contribute to physiological adaptation of the organism. We have previously described a subpopulation of neural crest-derived stem cells residing in the organ. These cells are responsible for hypoxia-induced neurogenesis. Little is known about the molecular mechanisms underlying this neurogenic process.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE67429 | GEO | 2015/03/31

SECONDARY ACCESSION(S): PRJNA279876

REPOSITORIES: GEO

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Gene expression analysis in the adult carotid body stem cell niche

Project description:The carotid body (CB) is a peripheral chemoreceptor organ that suffers a profound angiogenic and neurogenic process in response to hypoxemia, to contribute to physiological adaptation of the organism. We have previously described a subpopulation of neural crest-derived stem cells residing in the organ. These cells are responsible for hypoxia-induced neurogenesis. Little is known about the molecular mechanisms underlying this neurogenic process. We have used neuronal cell-enriched neurosphere (NS) cultures vs. undifferentiated cell-enriched NS to study molecular pathways involved in the biology of these CB different cell types.

2015-03-31 | E-GEOD-67429 | biostudies-arrayexpress

Expression data from carotid body glomus cells and neuroblasts, from young adult rats (9-11 weeks of age)

Project description:The carotid body is a peripheral chemoreceptor organ containing a neurogenic niche with stem cells and immature neuronal cells that convert into new neurons (glomus cells) upon activation by hypoxia. We have used microarray to compare the gene expression programs of glomus cells and neuroblasts, both in normoxic and hypoxic (3 days) conditions, to highlight the molecular mechanisms underlying fast neurogenesis

2023-12-17 | GSE249594 | GEO

Single cell transcriptome analysis of mouse carotid body glomus cells

Project description:The carotid body (CB) is a major arterial chemoreceptor containing glomus cells whose activities are regulated by changes in arterial blood contents including oxygen. We employed the single cell RNASeq method by performing next-generation sequencing on single glomus cellderived cDNAs to eliminate contamination of genes derived from other cell types present in the CB. This study has generated a CB expression profile containing novel glomus cell specific genes. The wealth of information provided through this study offers a valuable foundation for identifying molecules functioning in the CB.

2016-03-15 | GSE76579 | GEO

Single cell transcriptome analysis of mouse carotid body glomus cells

Project description:The carotid body (CB) is a major arterial chemoreceptor containing glomus cells whose activities are regulated by changes in arterial blood contents including oxygen. We employed the single cell RNAÂSeq method by performing next-generation sequencing on single glomus cellÂderived cDNAs to eliminate contamination of genes derived from other cell types present in the CB. This study has generated a CB expression profile containing novel glomus cell specific genes. The wealth of information provided through this study offers a valuable foundation for identifying molecules functioning in the CB. 8 single CB glomus cells that were confirmed expressing tyrosine hydroxylase (Th), ubiquitin carboxyl-terminal esterase L1 (Uchl1) and potassium channel subfamily K member 3 (Kcnk3) were harvested from P4-5 wild type mice and subjected to single-cell RNA-Seq

2016-03-15 | E-GEOD-76579 | biostudies-arrayexpress

Expression profile of mouse carotid body and adrenal medulla [Affymetrix]

Project description:The carotid body is a chemoreceptor that senses decreases in blood oxygen to increase breathing in hypoxia. To look for candidate oxygen sensors in the carotid body, we compared the gene expression of the carotid body to the adrenal medulla, a similar tissue that does not have oxygen sensitivity in adults.

2015-11-11 | GSE72133 | GEO

Expression profile of mouse carotid body and adrenal medulla [RNA-Seq]

2015-11-11 | GSE72165 | GEO

Comparative analysis of transcriptomes from the carotid body, adrenal medulla, and superior cervical ganglion of adult mice

Project description:Acute O2 sensing is a fundamental property of cells in the peripheral chemoreceptors, e.g. glomus cells in the carotid body (CB) and chromaffin cells in the adrenal medulla (AM), and is necessary for adaptation to hypoxia. The mechanisms underlying the detection of changes in O2 tension by these cells are still poorly understood. Recently, we suggested that CB glomus cells have specific metabolic features that favour their sensitivity to hypoxia (Fernandez-Aguera et al, 2015, Cell Metab.). To investigate the metabolic profile characteristic of acute O2-sensing cells, we used adult mice to compare the transcriptomes of three organs derived from common sympathoadrenal progenitors, but exhibiting variable responsiveness to acute hypoxia: CB and AM which are O2-sensitive (CB > AM) and superior cervical ganglion (SCG), which are practically O2-insensitive. Our data support the concept that responsiveness to acute hypoxia depends on a “signature metabolic profile” in peripheral chemoreceptor cells.

2017-09-08 | GSE99593 | GEO

Expression profile of mouse carotid body and adrenal medulla [RNA-Seq]

2015-11-11 | E-GEOD-72165 | biostudies-arrayexpress

Expression profile of mouse carotid body and adrenal medulla [Affymetrix]

2015-11-11 | E-GEOD-72133 | biostudies-arrayexpress

Transcriptomic analysis indicates a role for oxidative phosphorylation in postnatal development of rat carotid body hypoxic sensitivity

Project description:The carotid body (CB), located bilaterally at the carotid artery bifurcations, is the primary sensory organ for monitoring arterial blood O2 levels. Carotid bodies are immature at birth, exhibiting low sensitivity to hypoxia and become more sensitive with maturation during the first few weeks of neonatal life. To understand the molecular basis for the postnatal developmental hypoxic responses of CB, we isolated CBs from 5-day and 21-day-old Sprague Dawley rats, and performed RNA-sequencing, which allows comprehensive analysis of gene expression. Differentially expressed genes (DEGs) were generated using Edge R, while functional enrichment analysis was performed using GSEA. Analysis of RNA seq data showed 1769 DEGs of the total 12,696 genes shared between neonates and adults. Of the 1769 DEGs, 924 genes were upregulated, and 1680 genes were downregulated. Further analysis showed that genes related to oxidative phosphorylation (Ox/phos) and hypoxia-signaling pathways were significantly upregulated in neonatal compared to adult CBs, suggesting a possible link to differential developmental hypoxic responses seen in CB. Genes related to cytokine signaling (INF and TNFα) and transcription factors (CREB and NFB) mediated pathways were enriched in adult CBs suggesting expression of these pathways may be linked to developmental regulation. The RNA-seq results were verified by analyzing mRNA changes in selected genes by qRT-PCR. Our results of enrichment analysis of biological pathways offer a valuable insight into CB hypoxic sensing responses and development process.

2024-03-05 | GSE252955 | GEO

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