Nasal microbiome - syncom screening
Ontology highlight
ABSTRACT:
INSTRUMENT(S): Q Exactive HF
ORGANISM(S): Synthetic Community
SUBMITTER: 
Daniel Petras
PROVIDER: MSV000096776 | MassIVE | Sat Jan 04 05:42:00 GMT 2025
REPOSITORIES: MassIVE
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Project description:Microbial Synthetic Community resembling the Nasal human microbiome
2024-01-18 | MSV000093885 | MassIVE
Project description:Microbial Synthetic Community resembling the Nasal human microbiome
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Project description:Chronic rhinitis (CR) is a frustrating clinical syndrome in dogs and our understanding of the disease pathogenesis in is limited. Increasingly, host-microbe interactions are considered key drivers of clinical disease in sites of persistent mucosal inflammation such as the nasal and oral cavities. Therefore, we applied next generation sequencing tools to interrogate abnormalities present in the nose of dogs with CR and compared immune and microbiome profiles to those of healthy dogs. Host nasal cell transcriptomes were evaluated by RNA sequencing, while microbial communities were assessed by 16S rRNA sequencing. Correlation analysis was then used to identify significant interactions between nasal cell transcriptomes and the nasal microbiome and how these interactions were altered in animals with CR. Notably, we observed significant downregulation of multiple genes associated with ciliary function in dogs with CR, suggesting a previously undetected role for ciliary dysfunction in this syndrome. We also found significant upregulation of immune genes related to the TNF-a and interferon pathways. The nasal microbiome was also significantly altered in CR dogs, with overrepresentation of several potential pathobionts. Interactome analysis revealed significant correlations between bacteria in the genus Porphyromonas and the upregulated host inflammatory responses in dogs with CR, as well as defective ciliary function which was correlated with Streptococcus abundance. These findings provide new insights into host-microbe interactions in a canine model of CR and indicate the presence of potentially causal relationships between nasal pathobionts and the development of nasal inflammation and ciliary dysfunction.
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Project description:Staphylococcus aureus prefers the human anterior nares as its habitat, but nothing is known about the nutritional situation in this ecological niche. Analysis of nasal secretions showed a complex mixture of nutrients at low concentration. Based on these findings a synthetic nasal medium (SNM) was composed, mimicking nasal secretions. We used microarrays in order to investigate pathways and expression patterns important in a synthetic medium mimicking nasal secretions compared to standard laboratory complex medium
2013-04-10 | GSE43712 | GEO
Project description:Staphylococcus aureus prefers the human anterior nares as its habitat, but nothing is known about the nutritional situation in this ecological niche. Analysis of nasal secretions showed a complex mixture of nutrients at low concentration. Based on these findings a synthetic nasal medium (SNM) was composed, mimicking nasal secretions. We used microarrays in order to investigate pathways and expression patterns important in a synthetic medium mimicking nasal secretions compared to standard laboratory complex medium Staphylococcus aureus USA300 was inoculated in complex medium (BM) or synthetic nasal medium (SNM) to an OD578nm of 0.005 and grown under aerobic conditions until OD578nm of 0.02. RNA was stabilized and extracted at this early growth phase and hybridization was made on Affymetrix microarrays. The aim was to identify genes which are important during growth under the limited conditions present during colonization of human nares
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Project description:We report the application of single cell RNA sequencing technology for high-throughput profiling of nasal microbiome Staphylococcus epidermidis in human nasal epithelial cells.
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Project description:To evaluate effect of lipopolysaccharide in nasal fibroblast, we have employed whole genome microarray expression profiling as a discovery platform. Nasal fibroblasts were exposed to LPS (10 μg/mL) for 12 h. Total RNA was isolated using Trizol reagent (Invitrogen, Carlsbad, CA). For control and test RNAs, synthesis of target cRNA probes and hybridization were performed using the Low RNA Input Linear Amplification kit (Agilent Technology, Santa Clara, CA). Hybridized images were scanned using a DNA microarray scanner and quantified using Feature Extraction Software (Agilent). All data normalization and selection of fold-change of the genes were performed using GeneSpringGX 7.3 (Agilent). Nasal fibroblasts were exposed to LPS (10 μg/mL) for 12 h. After exposure for 12hr with LPS, the untreated nasal fibroblasts and LPS-treated nasal fibroblasts were harvested and measured. Double independent experiments were performed at each time (0 or 12 hours) using different nasal fibroblasts for each experiment. So these data are duplicated.
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