Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA95873 | ENA |
REPOSITORIES: ENA
Similar Datasets
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: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:To quantify gene expression differences in olfactory epithelium between the mouse (Mus musculus) and the Nile rat (Arvicanthis niloticus), paired-end RNA sequencing (RNA-seq) was used to profile olfactory epithelium transcriptomes of six Nile rats and six mice (C57BL/6J) (one male and one female at the age of 8, 12, and 16 weeks for each species).
2022-05-01 | GSE201761 | GEO
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:Gene Expression Analysis of Fezf1 Mutant Main Olfactory Epithelium
| PRJNA135573 | ENA
Project description:Gene Level Expression Profiling: Activity dependent genes in the olfactory epithelium
| PRJNA215768 | ENA
Project description:Ongoing, lifelong neurogenesis maintains the neuronal population of the olfactory epithelium in the face of piecemeal neuronal turnover and restores it following wholesale loss. The molecular phenotypes corresponding to different stages along the progression from multipotent globose basal cell (GBC) progenitor to differentiated olfactory sensory neuron are poorly characterized. We used the transgenic expression of GFP and cell surface markers to FACS-isolate Sox2-GFP(+) GBCs, Neurog1-GFP(+) GBCs and immature neurons, and OMP-GFP(+) mature neurons from normal adult mice. In addition, the latter two populations were also collected 3 weeks after olfactory bulb ablation, a lesion that results in persistently elevated neurogenesis. Global profiling of mRNA from the populations indicates that all stages of neurogenesis share a cohort of >2100 genes that are upregulated compared to sustentacular cells. A further cohort of >1200 genes are specifically upregulated in GBCs as compared to sustentacular cells and differentiated neurons. The increased rate of neurogenesis caused by olfactory bulbectomy had little effect on the transcriptional profile of the Neurog1-GFP(+) population. In contrast, the abbreviated lifespan of OMP-GFP(+) neurons born in the absence of the bulb correlated with substantial differences in gene expression as compared to the mature neurons of the normal epithelium. Detailed examination of the specific genes upregulated in the different progenitor populations revealed that the chromatin modifying complex proteins LSD1 and coREST were expressed sequentially in upstream Sox2-GFP(+) GBCs and Neurog1-GFP(+) GBCs/immature neurons. The expression patterns of these proteins are dynamically regulated after activation of the epithelium by methyl bromide lesion.
2012-07-02 | GSE37581 | GEO
Project description:Activity-dependent gene expression in the mammalian olfactory epithelium
| PRJNA352258 | ENA
Project description:Ongoing, lifelong neurogenesis maintains the neuronal population of the olfactory epithelium in the face of piecemeal neuronal turnover and restores it following wholesale loss. The molecular phenotypes corresponding to different stages along the progression from multipotent globose basal cell (GBC) progenitor to differentiated olfactory sensory neuron are poorly characterized. We used the transgenic expression of GFP and cell surface markers to FACS-isolate Sox2-GFP(+) GBCs, Neurog1-GFP(+) GBCs and immature neurons, and OMP-GFP(+) mature neurons from normal adult mice. In addition, the latter two populations were also collected 3 weeks after olfactory bulb ablation, a lesion that results in persistently elevated neurogenesis. Global profiling of mRNA from the populations indicates that all stages of neurogenesis share a cohort of >2100 genes that are upregulated compared to sustentacular cells. A further cohort of >1200 genes are specifically upregulated in GBCs as compared to sustentacular cells and differentiated neurons. The increased rate of neurogenesis caused by olfactory bulbectomy had little effect on the transcriptional profile of the Neurog1-GFP(+) population. In contrast, the abbreviated lifespan of OMP-GFP(+) neurons born in the absence of the bulb correlated with substantial differences in gene expression as compared to the mature neurons of the normal epithelium. Detailed examination of the specific genes upregulated in the different progenitor populations revealed that the chromatin modifying complex proteins LSD1 and coREST were expressed sequentially in upstream Sox2-GFP(+) GBCs and Neurog1-GFP(+) GBCs/immature neurons. The expression patterns of these proteins are dynamically regulated after activation of the epithelium by methyl bromide lesion. Total RNA was isolated from dissected, dissociated and FACS-purified olfactory mucosal cells from normal adult mice or mice 3 weeks after unilateral bulbectomy. Cells were purified with FACS using endogenous GFP fluorescence from various transgenic lines and cell surface labeling. Two to seven adult mice were used per replicate and three replicates per condition were performed using Illumina bead arrays. 21 samples from olfactory mucosa were analyzed in this series and 3 samples were from a commercially available reference RNA sample. Universal mouse reference RNA from Stratagene was used as a general control and Normal olfactory mucosa was used as a tissue specific control.
2012-07-01 | E-GEOD-37581 | biostudies-arrayexpress
Project description:Expression data from Emx2 wildtype and knockout olfactory epithelium
| PRJNA113501 | ENA