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| Status |
Public on Jan 05, 2012 |
| Title |
Nasal epithelium gene expression profiling in child respiratory allergic disease |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
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| Summary |
Background: In asthma, airway epithelium remodeling can already be detected during childhood, and epithelial cells are more susceptible to virus and oxidative stress. Their exact role in natural history and severity of children allergic respiratory disease remains however surprisingly unexplored.
Aim: To analyze dysfunctions of epithelium in dust mite allergic respiratory disease (rhinitis ± asthma) in children.
Methods: Expression profilings of nasal epithelial cells collected by brushing were performed on Affymetrix Hugene 1.0 ST arrays. All allergic patients were sensitized to dust mite. 19 patients had an isolated allergic rhinitis (AR). 14 patients had AR associated with asthma. Patients were compared to 12 controls, their severity and control being assessed according to NAEPP and ARIA criteria. Infections by respiratory viruses were excluded by real-time PCR measurements.
Results: 61 probes were able to distinguish allergic rhinitis children from healthy controls. A majority of these probes was under the control of Th2 cytokines, as evidenced by parallel experiments performed on primary cultures of nasal epithelial cells. In uncontrolled asthmatic patients, we observed not only an enhanced expression of these Th2-responsive transcripts, but also a down-regulation of interferon-responsive genes.
Conclusion: Our study identifies a Th2 driven epithelial phenotype common to all dust mite allergic children. Besides, it suggests that epithelium is involved in the severity of the disease. Expression profiles observed in uncontrolled asthmatic patients suggest that severity of asthma is linked at the same time to atopy and to impaired viral response.
Nasal epithelium gene expression profiling of dust mite allergic children with isolated rhinitis, rhinitis associated with asthma and controls.
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| Overall design |
38 samples classified in 4 categories : 14 isolated rhinitis (R), 6 rhinitis with uncontrolled asthma (UA), 7 rhinitis with controlled asthma (CA) and 11 healthy subjects (C )
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| Contributor(s) |
Giovannini-Chami L, Moreilhon C, Le Brigand K, Barbry P |
| Citation(s) |
22005912 |
| Submission date |
Nov 25, 2009 |
| Last update date |
Jul 26, 2018 |
| Contact name |
Kevin Lebrigand |
| Organization name |
IPMC/CNRS
|
| Lab |
Functional Genomics Platform of Nice-Sophia-Antipolis, France.
|
| Street address |
660 route des lucioles
|
| City |
Valbonne - Sophia-Antipolis |
| ZIP/Postal code |
06560 |
| Country |
France |
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| Platforms (1) |
| GPL6244 |
[HuGene-1_0-st] Affymetrix Human Gene 1.0 ST Array [transcript (gene) version] |
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| Samples (38)
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| This SubSeries is part of SuperSeries: |
| GSE19190 |
Distinct epithelial gene expression phenotypes in childhood respiratory allergy |
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| Relations |
| BioProject |
PRJNA123743 |
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