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Characterizing the expression of human olfactory receptor genes

ABSTRACT: We aim, among other things, to characterize olfactory receptor (OR) genes wich are differentially expressed between olfactory epithelium (OE) and other organ tissues, in humans. Keywords: Comparative

ORGANISM(S): Rattus norvegicus Pan troglodytes Canis lupus familiaris Homo sapiens

PROVIDER: GSE5969 | GEO | 2007/02/01

SECONDARY ACCESSION(S): PRJNA97439

REPOSITORIES: GEO

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Characterizing the expression of human olfactory receptor genes

Project description:We aim, among other things, to characterize olfactory receptor (OR) genes wich are differentially expressed between olfactory epithelium (OE) and other organ tissues, in humans. Six OE samples and ten non-OE samples, including two samples of the following tissues: liver, kidney, lung, testis, and heart.

2010-06-11 | E-GEOD-5969 | biostudies-arrayexpress

Characterizing the expression of Pan troglodytes olfactory receptor genes

Project description:We aim, among other things, to characterize olfactory receptor (OR) genes wich are differentially expressed between olfactory epithelium (OE) and other organ tissues, in chimpanzees (Pan troglodytes), and to make comparisons with human data from a previous series using the same platform. Keywords: Comparative Four OE samples and eight non-OE samples, including two samples of the following tissues: heart, liver, lung, and testis.

2008-10-01 | E-GEOD-11156 | biostudies-arrayexpress

Characterizing the expression of Pan troglodytes olfactory receptor genes

Project description:We aim, among other things, to characterize olfactory receptor (OR) genes wich are differentially expressed between olfactory epithelium (OE) and other organ tissues, in chimpanzees (Pan troglodytes), and to make comparisons with human data from a previous series using the same platform. Keywords: Comparative

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Persistent post-COVID-19 smell loss is associated with inflammatory infiltration and altered olfactory epithelial gene expression

Project description:We show that humans with lasting PASC olfactory loss harbor cellular and molecular changes in the olfactory epithelium, the peripheral organ for smell. Biopsy analyses using single cell RNA-sequencing, obtained from 6 patients 4-16 months following infection, identified a dysruption of olfactory epithelium homeostasis with infiltration of unique immune cell populations.

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Chip-chip from mouse olfactory epithelium (OE) and liver with antibodies against H3K9me3 and H4K20me3

Project description:The Olfactory Receptor (OR) genes are specifically expressed in the MOE in a monogenic and monoallelic fashion. Only 1 out of 2800 alleles is expressed in each olfactory sensory neuron in mice. ChIP-chip from mouse olfactory epithelium (OE) and liver for H3K9me3 and H4K20me3 revealed that the ORs are highly enriched for these modifications in OE but not in liver. 24 samples were analyzed (20 from OE and 4 from liver) with matching inputs as controls. For the OE samples, there were 2-3 replicates for each array.

2011-05-03 | E-GEOD-24420 | biostudies-arrayexpress

Chip-chip from mouse olfactory epithelium (OE) and liver with antibodies against H3K9me3 and H4K20me3

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Next Generation Sequencing Facilitates Quantitative Analysis of Mock/SARS-CoV-2 Infected humanized ACE2 Mice Olfactory Epithelium and Olfactory Bulb Transcriptomes

Project description:SARS-CoV-2 infection causes a wide spectrum of clinical manifestations in human, and olfactory dysfunction represents as one of the most predictive and common symptoms in COVID-19 patients. Herein we demonstrate intranasal inoculation of SARS-CoV-2 induces robust viral replication in the olfactory epithelium (OE), not olfactory bulb (OB), resulting in transient olfactory dysfunction in humanized ACE2 mice. To decipher the underlying mechanism of the observed olfactory dysfunction in SARS-CoV-2 infected mice at the molecular level, RNA-Seq analyses of the OE and OB samples from SARS-CoV-2 infected mice were performed in comparison with that from the control animals.

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Genome-wide screen reveals rhythmic regulation of genes involved in odor processing in the olfactory epithelium

Project description:Odor discrimination behavior displays circadian fluctuations in mice indicating that mammalian olfactory function is under control of the circadian system. This is further supported by the facts that odor discrimination rhythms depend on the presence of clock genes and that olfactory tissues contain autonomous circadian clocks. However, the molecular link between circadian function and olfactory processing is still unknown. In order to elucidate the molecular mechanisms underlying this link, we focused on the olfactory epithelium (OE), the primary target of odors and the site of the initial events in olfactory processing. We asked whether olfactory sensory neurons (OSNs) within the OE possess an autonomous circadian clock and whether olfactory pathways are under circadian control. Employing clock gene-driven bioluminescence reporter assays, immunohistochemistry and a time-dependent microarray-based transcriptome analysis on OE samples, we found robust circadian rhythms of core clock genes and their proteins in OSNs, suggesting that the OE indeed contains an autonomous circadian clock. Furthermore, we identified several OSN-specific components of the olfactory pathway that are under circadian control, including several candidates with putative roles in circadian olfactory processing, such as KIRREL2 -- an established factor involved in short-term OSN activation. The spatiotemporal expression patterns of our candidate proteins suggest that they are involved in short-term anabolic processes to rhythmically prepare the cell for peak performances and to promote circadian function of OSNs. We performed a genome-wide expression study with RNA from OE tissue extracted at 4-h intervals in constant darkness from previously entrained mice. Total RNA of four mice per sampling time was pooled in equal amounts.

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