Single-cell RNA sequencing of mouse olfactory sensory neurons
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE149271 | GEO | 2020/10/23
REPOSITORIES: GEO
Similar Datasets
Project description:The overall aim of the experiment is to understand the phenotype of mature mouse olfactory sensory neurons by analyzing the transcripts expressed and enriched in them as compared to the rest of the cell types in the olfactory epithelium (consisting of immature neurons, supporting cells, progenitor cells and cells in lamina propria) and brain ( with out the olfactory bulbs). Comparision with the other cell types in the olfactory epithelium should eliminate the transcripts commonly expressed in the olfactory epithelium and comparision with brain will eliminate the transcripts common to most neurons. Our gene chip data indicates that mature mouse olfactory sensory neurons express 10,000 genes. Mature OSNs specifically contained three clusters of over represented Gene ontology categories: smell, ion transport and cilia. Analysis for the functionally over represented categories among the transcripts with a positive signal in the mature OSNs yielded largely broad categories common to all cells with the exception of chromatin modelling and RNA processing categories. Biological process categories of movement, development and immune response came as under represented categories. Experiment Overall Design: To purify mature olfactory neurons we took advantage of the OMP-GFP mice. OMP(olfactory marker protein) is expressed specifically in mature olfactory and vomeronasal sensory neurons. In the OMP-GFP mice the coding region of OMP is replaced by GFP. We purified OSNs from the rest of the epithelium from these mice by using FACS. . We used the Affymetrix gene chips mouse expression set 430 (consisting of 430A and 430B chips). Our gene chip data is extensively validated by insitu hybridizations.
2008-06-13 | E-GEOD-4915 | biostudies-arrayexpress
Project description:Transcriptomic analysis of two cellular populations of the mouse olfactory mucosa. 6 x 10,000 olfactory sensory neurons (OSNs) were captured by FACS. Three samples from a high OMP-expressing population and three from a low OMP-expressing population. The RNA from each sample was sequenced on the Illumina Hiseq platform. This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/
2015-05-06 | E-ERAD-354 | biostudies-arrayexpress
Project description:We sequenced the transcriptome of 34 single olfactory sensory neurons (OSNs) manually picked from OMP-GFP mice, ensuring the cells expressed high levels of GFP, a marker of mature OSNs. We pooled the olfactory mucosa from 2 male and 2 female animals, to obtain single-cell suspensions for cell picking. We only picked healthy-looking cells. From each, we constructed libraries for single-cell RNA-sequencing, to characterise the diversity of OR genes expressed.
2020-02-04 | E-MTAB-8285 | biostudies-arrayexpress
Project description:Olfaction plays important roles in food and mate choice, and also in the avoidance of predators, making it a vital sensory modality for preservation and reproduction. In the vertebrates, olfactory receptors are thought to localise on multiple cilia elaborated on the dendritic knobs of olfactory sensory neurons (OSNs). Although olfactory cilia dysfunction can cause loss of the sense of smell, how their differentiation is programmed at the transcriptional level has remained largely unexplored. We discovered in zebrafish and mice that Foxj1, a fork head-domain containing transcription factor traditionally linked with motile cilia biogenesis, is expressed in OSNs and required for olfactory epithelium formation. In keeping with the immotile nature of the olfactory cilia, we observed that ciliary motility genes that are the targets of Foxj1 in motile ciliated cells, are repressed in the OSNs. Strikingly, we also found that besides ciliogenesis, Foxj1 controls the differentiation of the OSNs by regulating their cell type-specific gene expression, such as that of olfactory marker protein (omp) involved in odour-evoked signal transduction. In line with these requirements, response to bile acid, an odour detected by OMP-positive OSNs, was significantly diminished in the foxj1 mutant zebrafish. Taken together, our findings establish how the canonical Foxj1-mediated motile ciliogenic transcriptional program has been repurposed for the biogenesis of the immotile olfactory cilia and for the development of the OSNs themselves.
2023-12-04 | GSE232397 | GEO
Project description:Olfactory sensory neurons (OSNs) express a single abundant olfactory receptor (OR). To assess the differences in gene expression between different OSN sub-types we collected three pools of neurons that express one OR and compared them to three pools of neurons that express another. After extracting RNA from these pools, the samples were multiplexed and sequenced using the Illumina Hiseq2500 platform.This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/
2016-02-09 | E-ERAD-436 | biostudies-arrayexpress
Project description:OMP is expressed only in mature olfactory sensory neurons, arguing that its function is specially suited to the needs of OSNs. However none of the properties of OMP suggest any direct role in regulating gene expression in OSNs. Our data confirms that gene expression in the olfactory epithelium of mice lacking OMP is indistinguishable from mice expressing OMP. We used affymerix M430v2.0 gene chips to cover as much of genome as possible and observed no statistically significant differences in mRNA abundance between the two genotypes.These results imply that OMPs ability to regulate signal transduction with in OSNs has little effect on gene expression and that its ability to promote mitosis in neighbouring cells (under culture conditions) is insufficiently active under normal laboratory housing conditions to generate detectable differences in gene expression patterns. Keywords: genetic modification
2007-04-30 | GSE4927 | GEO
Project description:OMP is expressed only in mature olfactory sensory neurons, arguing that its function is specially suited to the needs of OSNs. However none of the properties of OMP suggest any direct role in regulating gene expression in OSNs. Our data confirms that gene expression in the olfactory epithelium of mice lacking OMP is indistinguishable from mice expressing OMP. We used affymerix M430v2.0 gene chips to cover as much of genome as possible and observed no statistically significant differences in mRNA abundance between the two genotypes.These results imply that OMPs ability to regulate signal transduction with in OSNs has little effect on gene expression and that its ability to promote mitosis in neighbouring cells (under culture conditions) is insufficiently active under normal laboratory housing conditions to generate detectable differences in gene expression patterns. Experiment Overall Design: The overall design of the experiment is to undertand the effect of OMP (olfactory marker protein) on gene expression in the olfactory epithelium. We isolated the olfactory epithelium from homozygous and heterozygous OMP-GFP mice, extracted the RNA and hybridized on to the mouse expression set 430 2.0 Chip.
2008-06-13 | E-GEOD-4927 | biostudies-arrayexpress
Project description:Animals traversing different environments encounter both stable background stimuli and novel cues, which are thought to be detected by primary sensory neurons and then distinguished by downstream brain circuits. Here we show that each of the ~1000 olfactory sensory neuron (OSN) subtypes in the mouse harbors a distinct transcriptome whose content is precisely determined by interactions between its odorant receptor and the environment. This transcriptional variation is systematically organized to support sensory adaptation: expression levels of more than 70 genes relevant to transforming odors into spikes continuously vary across OSN subtypes, dynamically adjust to new environments over hours, and accurately predict acute OSN-specific odor responses. The sensory periphery therefore separates salient signals from predictable background via a transcriptional rheostat whose moment-to-moment state reflects the past and constrains the future; these findings suggest a general model in which structured transcriptional variation within a cell type reflects individual experience.
2021-12-06 | GSE173947 | GEO
Project description:Olfactory sensory neurons (OSNs) are functionally defined by their expression of a unique odorant receptor (OR). Mechanisms underlying singular OR expression are well studied, and involve a massive cross-chromosomal enhancer interaction network. Trace amine-associated receptors (TAARs) form a distinct family of olfactory receptors, and here we find that mechanisms regulating Taar gene choice display many unique features. The epigenetic signature of Taar genes in TAAR OSNs is different from that in OR OSNs. We further identify that two TAAR enhancers conserved across placental mammals are absolutely required for expression of the entire Taar gene repertoire. Deletion of either enhancer dramatically decreases the expression probabilities of different Taar genes, while deletion of both enhancers completely eliminates the TAAR OSN populations. In addition, both of the enhancers are sufficient to drive transgene expression in the partially overlapped TAAR OSNs. We also show that the TAAR enhancers operate in cis to regulate Taar gene expression. Our findings reveal a coordinated control of Taar gene choice in OSNs by two remote enhancers, and provide an excellent model to study molecular mechanisms underlying formation of an olfactory subsystem.
2021-03-08 | GSE163660 | GEO
Project description:Olfactory sensory neurons (OSNs) are functionally defined by their expression of a unique odorant receptor (OR). Mechanisms underlying singular OR expression are well studied, and involve a massive cross-chromosomal enhancer interaction network. Trace amine-associated receptors (TAARs) form a distinct family of olfactory receptors, and here we find that mechanisms regulating Taar gene choice display many unique features. The epigenetic signature of Taar genes in TAAR OSNs is different from that in OR OSNs. We further identify that two TAAR enhancers conserved across placental mammals are absolutely required for expression of the entire Taar gene repertoire. Deletion of either enhancer dramatically decreases the expression probabilities of different Taar genes, while deletion of both enhancers completely eliminates the TAAR OSN populations. In addition, both of the enhancers are sufficient to drive transgene expression in the partially overlapped TAAR OSNs. We also show that the TAAR enhancers operate in cis to regulate Taar gene expression. Our findings reveal a coordinated control of Taar gene choice in OSNs by two remote enhancers, and provide an excellent model to study molecular mechanisms underlying formation of an olfactory subsystem.
2021-03-08 | GSE164524 | GEO