TITLE

Serial Analysis of Gene Expression in Differentiated Cultures of Human Epidermal Keratinocytes

AUTHOR(S)
Jansen, Bastiaan J. H.; van Ruissen, Fred; de Jongh, Gys; Zeeuwen, Patrick L. J. M.; Schalkwijk, Joost
PUB. DATE
January 2001
SOURCE
Journal of Investigative Dermatology;Jan2001, Vol. 116 Issue 1, p12
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
SummaryKeratinocyte gene expression was surveyed more comprehensively than before, by means of serial analysis of gene expression. A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolonged period of time with tumor necrosis factor-α, thus mimicking aberrant differentiation in the context of cutaneous inflammation. Serial analysis of gene expression revealed many transcripts derived from unknown genes and a large number of genes that are not known to be expressed in keratinocytes; furthermore, these data provide quantitative information about the relative abundance of transcripts, allowing the identification of differentially expressed genes. A major part of the identified transcripts accounted for genes involved in energy metabolism and protein synthesis. A large proportion of all transcripts (6%) corresponded to genes associated with terminal differentiation and barrier formation. Another highly expressed functional group of genes (2% of all transcripts) corresponded to proteins involved in host protection such as antimicrobial proteins and proteinase inhibitors. Three of these genes were not known to be expressed in keratinocytes, and some were upregulated after prolonged tumor necrosis factor-α exposure. Our data on expressed genes in keratinocytes are consistent with the known function of human epidermis, and provide a first step to generate a transcriptome of human keratinocytes.
ACCESSION #
5661532

 

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