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

Keratinocyte 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 prolon...

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Veröffentlicht in:Journal of investigative dermatology 2001-01, Vol.116 (1), p.12-22
Hauptverfasser: Jansen, Bastiaan J.H., van Ruissen, Fred, de Jongh, Gys, Zeeuwen, Patrick L.J.M., Schalkwijk, Joost
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container_start_page 12
container_title Journal of investigative dermatology
container_volume 116
creator Jansen, Bastiaan J.H.
van Ruissen, Fred
de Jongh, Gys
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Schalkwijk, Joost
description Keratinocyte 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.
doi_str_mv 10.1046/j.1523-1747.2001.00218.x
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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. 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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. 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subjects Apoptosis - genetics
Biological and medical sciences
Blotting, Northern
cell culture
Cell Differentiation - genetics
Cell Survival - genetics
Cells, Cultured - drug effects
Cells, Cultured - physiology
cytokines
Cytoskeletal Proteins - genetics
Dermatology
differentiation
epidermis
Epidermis - cytology
Gene Expression - drug effects
genetics
Humans
Investigative techniques, diagnostic techniques (general aspects)
Keratinocytes - cytology
Keratinocytes - drug effects
Keratinocytes - metabolism
Medical sciences
Pathology. Cytology. Biochemistry. Spectrometry. Miscellaneous investigative techniques
RNA, Messenger - genetics
Tumor Necrosis Factor-alpha - pharmacology
title Serial Analysis of Gene Expression in Differentiated Cultures of Human Epidermal Keratinocytes
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