Mountain View
biomedical and healthCAre Data Discovery Index Ecosystem
help Advanced Search
Title: Gene expression of human keratinocyte (HaCaT) under the stress of high sodium concentration      
dateReleased:
01-29-2015
description:
The mechanisms by which the epidermis responds to disturbances in barrier function and restores homeostasis are unknown. With a disruption of the epidermal barrier, water is lost resulting in an increase in extracellular sodium concentration. We demonstrate that the sodium channel Nax functions as the sodium sensor. With increased extracellular sodium, Nax up-regulates prostasin which results in activation of the sodium channel ENaC, resulting in increased sodium flux and increased downstream mRNA synthesis of inflammatory mediators. The same pathways are present in lung epithelial cells. A signal transduction pathway mediated directly through Nax and secondarily through ENaC results in production of secretory inflammatory mediators. These mediators result in epithelial proliferation and restoration of epidermal homeostasis, but can also have negative effects including excess inflammation and ultimately leads to activation of fibroblasts. Both wild type and Nax knockdown HaCaT cells were seeded in 12-well plates. 70-80% confluent cells were starved with fetal bovine serum (FBS) free Dulbecco's modified Eagle's medium (DMEM) overnight followed by a treatment with control medium (final150 mM sodium) or medium plus 10% more sodium (final 165 mM sodium). Cells were harvested at time point 0, 4, and 16 hours post treatment.
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-65366
refinement:
raw
alternateIdentifiers:
65366
keywords:
functional genomics
dateModified:
01-30-2015
availability:
available
types:
gene expression
name:
Homo sapiens
ID:
A-GEOD-17586
name:
[HTA-2_0] - Affymetrix GeneChip HTA-2_0 - Gene Level - HTA-2_0.r1.Psrs.mps probesets
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-65366/E-GEOD-65366.raw.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-65366/E-GEOD-65366.processed.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE65366
storedIn:
Gene Expression Omnibus
qualifier:
not compressed
format:
HTML
accessType:
landing page
primary:
true
authentication:
none
authorization:
none
abbreviation:
EBI
homePage: http://www.ebi.ac.uk/
ID:
SCR:004727
name:
European Bioinformatics Institute
homePage: https://www.ebi.ac.uk/arrayexpress/
ID:
SCR:002964
name:
ArrayExpress

Feedback?

If you are having problems using our tools, or if you would just like to send us some feedback, please post your questions on GitHub.